No-upload tools

Calculate Body Mass Index (BMI) and body surface area from weight and height. Includes BMI classification.

Calculate mean arterial pressure (MAP) from systolic and diastolic blood pressure.

Calculate ideal body weight by height using the Devine, Robinson, Miller, and Hamwi formulas.

Calculate corrected QT (QTc) using Bazett, Fridericia, Framingham, and Hodges formulas.

Calculate LDL cholesterol using the Friedewald formula from total cholesterol, HDL, and triglycerides.

Calculate fluid resuscitation volume for burn patients using the Parkland formula.

Convert HbA1c percentage to estimated average glucose (eAG) in mg/dL and mmol/L.

Confusion Assessment Method for the ICU (CAM-ICU) for delirium screening in critically ill patients.

Classify asthma control using the GINA 2025 criteria (well-controlled, partly controlled, uncontrolled).

CAGE questionnaire for alcohol use disorder screening (4 questions).

Calculate SAAG to differentiate portal hypertensive from non-portal hypertensive ascites.

Calculate transferrin saturation index from serum iron and total iron-binding capacity (TIBC).

Score cognitive function with the 30-point Mini-Mental State Examination.

Predict 6-month mortality in alcoholic hepatitis patients on steroid therapy using the Lille model.

Stratify Covid-19 severity by clinical and laboratory criteria.

Assess nicotine dependence severity with the Fagerström Test (6 questions).

Estimate total blood volume by weight, height, and sex (Nadler formula).

Estimate glomerular filtration rate (eGFR) using the 2021 CKD-EPI creatinine equation.

Estimate creatinine clearance using the Cockcroft-Gault formula.

Estimate glomerular filtration rate using the 4-variable MDRD equation.

Differentiate prerenal from intrinsic acute kidney injury using FENa.

FEUrea for AKI workup in patients on diuretics where FENa is unreliable.

Calculate UPCR from a single urine sample to estimate 24-hour protein excretion.

Calculate bicarbonate replacement dose for severe metabolic acidosis.

Calculate gestational age and estimated due date from last menstrual period (Naegele rule).

Calculate gestational age and due date from ultrasound biometry.

Calculate the APGAR score at 1 and 5 minutes for newborn assessment.

Pediatric-adapted Glasgow Coma Scale for infants and children.

Estimate uncuffed and cuffed ETT size and depth by age in children.

Pediatric drug infusion rate calculator in mcg/kg/min.

Pediatric drug infusion rate calculator in mg/kg/hour.

Score severity of neonatal abstinence syndrome using the Finnegan scale.

Pediatric coma scale by Raimondi for assessing consciousness in infants and children.

Score for screening neonatal sepsis using hematologic criteria.

Estimate gestational age in newborns using somatic features (Capurro method).

Estimate gestational age in newborns using neurological features (Capurro method).

Calculate serum osmolality from sodium, glucose, and BUN.

Correct total serum calcium for hypoalbuminemia.

Correct serum sodium for hyperglycemia (Katz / Hillier formulas).

Calculate total body iron deficit for IV iron replacement using the Ganzoni formula.

Convert between benzodiazepine doses (diazepam, lorazepam, alprazolam, clonazepam, etc.).

Convert between corticosteroid doses (prednisone, dexamethasone, hydrocortisone, etc.).

Convert between opioid doses to morphine milligram equivalents (MME).

Calculate induction and paralytic doses for rapid sequence intubation by weight.

Correct total phenytoin level for albumin and renal function (Sheiner-Tozer).

Convert IV drip rate from drops per minute (gtt/min) to mL/hour and vice versa.

Convert drug infusion rate between mcg/kg/min and mL/hour for vasoactive drugs.

Estimate the expected normal PaO2 based on patient age.

Calculate the PaO2/FiO2 ratio (P/F ratio) and classify ARDS severity by Berlin criteria.

Calculate SpO2/FiO2 ratio and equivalence to PaO2/FiO2 for non-invasive ARDS assessment.

Full Outline of UnResponsiveness (FOUR) score for coma assessment.

Grade subarachnoid hemorrhage by CT scan appearance using the Fisher scale.

Glasgow Coma Scale with pupil reactivity score (GCS-P).

Lawton Instrumental Activities of Daily Living scale for functional assessment in elderly.

Ramsay scale for level of sedation assessment (1–6).

Richmond Agitation-Sedation Scale (RASS) for ICU sedation assessment.

Riker Sedation-Agitation Scale (SAS) for ICU sedation.

Canadian Cardiovascular Society (CCS) functional classification of angina pectoris.

Aldrete and Kroulik post-anesthesia recovery score.

Eastern Cooperative Oncology Group performance status scale (0–5).

Karnofsky Performance Status scale (0–100) for assessing oncology patient function.

Palliative Performance Scale (PPS) for hospice and palliative care prognosis.

Revised Tokuhashi score for prognosis in metastatic spinal disease.

Tomita score for surgical strategy in spinal metastasis.

PaP score for 30-day survival probability in palliative cancer patients.

Palliative Prognostic Index for predicting survival in terminal cancer patients.

Calculate cumulative cigarette smoking exposure in pack-years.

Candida Score for identifying ICU patients who may benefit from antifungal therapy.

CHADS2 score for stroke risk in non-valvular atrial fibrillation.

New York Heart Association functional classification of heart failure.

GELF criteria for high tumor burden in follicular lymphoma.

Disease Activity Score (28 joints) with CRP for rheumatoid arthritis activity.

Disease Activity Score (28 joints) with ESR for rheumatoid arthritis activity.

ABCD2 score for stroke risk after transient ischemic attack.

AIMS65 score for predicting in-hospital mortality in upper GI bleeding.

Acute Physiology and Chronic Health Evaluation II (APACHE II) for ICU mortality.

Bedside Index for Severity in Acute Pancreatitis (BISAP) for mortality risk.

CPIS for diagnosis of ventilator-associated pneumonia.

CRUSADE score for in-hospital major bleeding risk after NSTEMI.

CURB-65 score for community-acquired pneumonia severity and mortality risk.

Alvarado score for clinical probability of acute appendicitis.

Caprini Risk Assessment for venous thromboembolism in surgical patients.

Modified Centor score for streptococcal pharyngitis probability.

CHA2DS2-VASc score for stroke risk in non-valvular atrial fibrillation.

Child-Pugh score for prognosis of chronic liver disease and cirrhosis.

Non-alcoholic fatty liver disease (NAFLD) fibrosis score.

10-year cardiovascular disease risk by Framingham equations.

Khorana score for predicting chemotherapy-associated VTE risk.

Lee RCRI for preoperative cardiac risk in non-cardiac surgery.

Maddrey discriminant function for severity of alcoholic hepatitis.

Mayo Score for assessing ulcerative colitis disease activity.

Padua score for VTE risk in hospitalized medical patients.

Ranson Criteria for mortality in acute pancreatitis (admission and 48h).

Risk of Paradoxical Embolism (RoPE) score for cryptogenic stroke with PFO.

Rockall score for mortality risk in upper gastrointestinal bleeding.

San Francisco Syncope Rule for predicting serious outcomes after syncope.

Alberta Stroke Program Early CT Score (ASPECTS) for early ischemic changes in stroke.

Wells criteria for clinical probability of pulmonary embolism.

Wells criteria for clinical probability of deep vein thrombosis.

FIB-4 index for non-invasive liver fibrosis assessment.

HAS-BLED bleeding risk score for patients on anticoagulation for AF.

HEART Score for major adverse cardiac events in chest pain patients.

Model for End-Stage Liver Disease (MELD) and MELD-Na scores for cirrhosis prognosis.

National Early Warning Score 2 (NEWS 2) for clinical deterioration detection.

National Institutes of Health Stroke Scale (NIHSS) for stroke severity.

Pneumonia Severity Index (PSI/PORT) for mortality risk in community-acquired pneumonia.

Quick Sepsis-Related Organ Failure Assessment (qSOFA) for sepsis screening.

SIC score for diagnosing sepsis-induced coagulopathy.

Sequential Organ Failure Assessment (SOFA) score for ICU organ dysfunction.

TIMI Risk Score for ST-elevation myocardial infarction (STEMI).

TIMI Risk Score for non-ST-elevation MI and unstable angina.

GRACE score for in-hospital and 6-month mortality in acute coronary syndrome.

Classify diabetic ketoacidosis severity (mild, moderate, severe).

SCORAD Index for severity of atopic dermatitis.

Psoriasis Area and Severity Index (PASI) for psoriasis severity assessment.

Pulmonary Embolism Severity Index (PESI) for 30-day mortality.

Severity assessment for dehydration in children to guide rehydration therapy.

Clinical Grading Scale for likelihood of malignant hyperthermia.

Crohn's Disease Activity Index (CDAI) for assessing Crohn's disease activity.

Bishop score for predicting successful labor induction.

Ulcerative Colitis Endoscopic Index of Severity (UCEIS).

Detsky modified multifactorial cardiac risk index for non-cardiac surgery.

Goldman multifactorial cardiac risk index for non-cardiac surgery.

Harvey-Bradshaw Index for Crohn's disease activity (simplified CDAI).

Injury Severity Score (ISS) for trauma anatomical severity.

Simplified PESI (sPESI) for pulmonary embolism 30-day mortality.

Revised International Staging System for multiple myeloma prognosis.

Pulmonary Embolism Rule-out Criteria (PERC) to safely exclude PE.

Get With The Guidelines Heart Failure (GWTG-HF) in-hospital mortality risk.

MASCC risk index for low-risk febrile neutropenia in cancer patients.

Trauma Associated Severe Hemorrhage (TASH) score for massive transfusion prediction.

Test regular expressions with live match highlighting.

Format, minify and validate JSON instantly.

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input instantly.

Decode and inspect JWT tokens instantly — view header, payload, and signature.

Generate cryptographically secure passwords with custom length, character sets, and strength check. Fully offline — no data ever leaves your browser.

Generate HTML meta tags for SEO and social sharing. Covers title, description, canonical, Open Graph, and Twitter Card tags.

Generate a valid robots.txt file for your website. Control which bots can crawl your pages, block AI scrapers, and add your sitemap URL.

Generate JSON-LD structured data for Article, Product, FAQ, HowTo, LocalBusiness, and more. Copy and paste into your HTML head.

Paste page HTML to audit title, description, canonical, Open Graph, and Twitter tags. Paste-only — cannot fetch live URLs.

Paste robots.txt and test if a URL path is allowed or blocked for a crawler. Paste-only — cannot fetch live robots.txt.

Paste sitemap XML to validate structure, URLs, and duplicates. Does not fetch live sitemaps or check HTTP status codes.

Paste JSON-LD to validate syntax and required schema.org fields. Paste-only — cannot fetch live pages or replace Google Rich Results Test.

Generate cryptographically secure API keys in hex, base64, or alphanumeric formats. Runs offline in your browser.

Generate one or many UUIDs instantly — supports v1, v4, and v5.

Build and decode cron expressions with a visual editor.

Convert numbers between decimal, hexadecimal, binary, and octal instantly. Supports integers and fractions.

Estimate per-request cost for GPT-4o, Claude, Gemini, and more. Enter token counts and see input, output, and total pricing.

Quick reference for Tailwind CSS classes — spacing, typography, colors, flexbox, grid, and more. Search and copy any class.

Format and beautify SQL queries instantly. Paste messy SQL and get indented, readable output.

Build cURL commands from URL, method, headers, and body. Copy-ready curl for any HTTP request.

Check password strength with entropy scoring and crack-time estimates. See what makes a password weak or strong.

Generate HMAC signatures with SHA-256, SHA-384, or SHA-512. Enter message and secret key — runs in your browser.

See how much of a model context window your text uses. Compare GPT-4o, Claude, and Gemini token limits.

Convert cURL commands to JavaScript fetch() code. Paste curl and get copy-ready fetch syntax.

Convert cURL commands to Python requests code. Paste curl and get copy-ready Python.

Generate Postman Collection v2.1 JSON from URL, method, headers, and body. Import directly into Postman.

Validate JSON data against a JSON Schema. Paste instance and schema to see errors instantly.

Test prompt templates with variables. Enter {{placeholders}} and preview the filled prompt instantly.

Estimate embedding API costs for OpenAI, Cohere, and Voyage. Enter token count and see per-request pricing.

Generate SQL INSERT statements from JSON arrays. Paste JSON and get copy-ready INSERT queries. Free, runs in your browser.

Generate CREATE TABLE SQL from JSON schema or sample rows. Infer column types instantly. Free browser tool.

Calculate RAG chunk count from token total, chunk size, and overlap. Plan vector indexing splits in your browser.

Compare LLM API costs across OpenAI, Claude, and Gemini for the same token counts. Free browser calculator.

Extract JSON from LLM responses. Parse fenced code blocks and inline objects from pasted model output.

Identify hash types from pasted digests. Detect MD5, SHA-256, bcrypt, and more. Paste only, runs in browser.

Validate IBAN numbers with mod-97 check digits. Paste an IBAN to verify format and checksum. Free browser tool.

Validate numbers with the Luhn algorithm. Check credit card and identifier check digits. Paste only, in browser.

Audit pasted JWT tokens for security issues. Flag alg none, expiry, and missing claims. Runs in your browser.

Beautify and indent pasted HTML for readability. Format messy markup instantly. Free, runs in your browser.

Parse URLs into protocol, host, path, query, and hash components. Paste any URL for instant breakdown.

JSON Schema Generator from JSON. Free, instant, runs in your browser.

Clean Up Markdown Text Online. Free, instant, runs in your browser.

Compare Two Prompts — Prompt Diff. Free, instant, runs in your browser.

Compare Prompt Versions. Free, instant, runs in your browser.

Format AI Output — JSON & Markdown. Free, instant, runs in your browser.

SQL Query Builder — SELECT Generator. Free, instant, runs in your browser.

Convert CSV to SQL INSERT Statements. Free, instant, runs in your browser.

Convert SQL INSERT to CSV. Free, instant, runs in your browser.

ER Diagram Generator from Schema. Free, instant, runs in your browser.

Convert MongoDB JSON to SQL. Free, instant, runs in your browser.

HTTP Request Builder — Raw & cURL. Free, instant, runs in your browser.

API Mock JSON Response Generator. Free, instant, runs in your browser.

Webhook Payload Inspector. Free, instant, runs in your browser.

Compare Two Hashes Online. Free, instant, runs in your browser.

Checksum Calculator — SHA-256 & More. Free, instant, runs in your browser.

SSL Certificate Decoder — Paste PEM. Free, instant, runs in your browser.

CSR Generator — RSA Key Pair. Free, instant, runs in your browser.

PEM Decoder — Parse PEM Blocks. Free, instant, runs in your browser.

Certificate Expiration Checker. Free, instant, runs in your browser.

HTML Preview Online. Free, instant, runs in your browser.

CSS Beautifier Online. Free, instant, runs in your browser.

JavaScript Minifier Online. Free, instant, runs in your browser.

HTML Structure Validator. Free, instant, runs in your browser.

CSS Grid Generator. Free, instant, runs in your browser.

Flexbox CSS Generator. Free, instant, runs in your browser.

XML Validator Online. Free, instant, runs in your browser.

YAML Validator Online. Free, instant, runs in your browser.

TOML to JSON Converter. Free, instant, runs in your browser.

XML Formatter Online. Free, instant, runs in your browser.

JSON Flatten — Nested to Dot Notation. Free, instant, runs in your browser.

JSON Path Tester Online. Free, instant, runs in your browser.

Convert CSV to JSON or JSON to CSV instantly. Auto-detects delimiters — supports comma, semicolon, and tab.

Paste a JSON array and instantly get a formatted Markdown table. Perfect for READMEs and documentation.

Bidirectional Markdown ↔ HTML converter. Paste content and get instant output — headings, lists, links, code blocks, and more.

Convert text to binary, hex, and decimal representations instantly.

Convert XML to JSON instantly in your browser. Handles attributes, nested elements, and repeated tags.

Convert Unix timestamps to human-readable dates and vice versa, with timezone support.

Convert pixels to rem and rem to pixels instantly. Configurable base font size with a common conversions reference table.

Convert between units of length, weight, temperature, data, speed, and more. Free, instant, no sign-up.

Calculate the optimal CSS line-height for any font size. Live preview and copy-ready CSS values.

Convert between px, pt, em, rem, and percent for CSS typography. Enter any value and see all units instantly.

Complete reference for paper sizes — A series, US Letter, Legal, Tabloid, and more. Search and filter by name or dimensions.

Convert date and time between time zones instantly. Compare multiple zones side by side.

Calculate exact age in years, months, and days from a birth date. Updates to today or any target date.

Parse and format ISO 8601 dates. Convert between ISO strings, local datetime, and Unix timestamps.

Find the ISO week number for any date. See week start, week end, and year-week label.

Business Days Calculator. Free, instant, runs in your browser.

Working Hours Calculator. Free, instant, runs in your browser.

Countdown to Date Calculator. Free, instant, runs in your browser.

Excel to CSV Converter Online. Free, instant, runs in your browser.

CSV to Excel Converter Online. Free, instant, runs in your browser.

CSV Delimiter Converter. Free, instant, runs in your browser.

CSV Column Mapper & Renamer. Free, instant, runs in your browser.

Transpose CSV Online. Free, instant, runs in your browser.

Calculate gross profit, net profit, and margin percentage from revenue and costs. Updates instantly.

Find your break-even point in units and revenue. Enter fixed costs, price per unit, and variable cost per unit.

Convert salary between annual, monthly, bi-weekly, weekly, daily, and hourly rates. Adjust for hours and weeks worked.

Calculate return on investment percentage from initial cost and final value. See profit and ROI instantly.

Estimate Amazon referral fees, FBA fees, and net profit per sale. Enter price, category, and fulfillment method.

Calculate Etsy listing, transaction, payment processing, and shipping fees. See net profit per sale instantly.

Calculate sales commission from deal value and commission rate. Supports flat rate and tiered percentages.

Convert desired annual salary to an hourly contractor rate. Factor in billable hours, expenses, and tax buffer.

Calculate selling price from cost and markup or margin. See profit per unit instantly.

Calculate invoice due dates from issue date and payment terms. Net 30, Net 60, or custom days.

Calculate final price after stacked Shopify discounts. Enter original price and multiple discount percentages.

Validate GTIN, EAN-13, and UPC barcodes. Verify check digits and format. Free, runs in your browser.

Generate Invoice Numbers Online. Free, instant, runs in your browser.

Generate Purchase Order Online. Free, instant, runs in your browser.

Generate Business Name Ideas. Free, instant, runs in your browser.

Currency Margin Calculator. Free, instant, runs in your browser.

Shipping Cost Calculator. Free, instant, runs in your browser.

SKU Generator Online. Free, instant, runs in your browser.

Full-featured scientific calculator with trigonometry, logarithms, exponents, and expression history.

Plot mathematical functions on an interactive graph. Supports multiple equations, zoom, pan, and real-time updates.

Simplify expressions, factor polynomials, solve equations, and compute derivatives. Renders math with LaTeX.

Calculate percentages, increases, decreases, proportions, and find original values before percentage changes. 9 calculation types.

Calculate GPA from letter grades and credit hours on a 4.0 scale. Add courses and see weighted GPA instantly.

Calculate weighted course grade from assignment scores and weights. See your overall percentage instantly.

Calculate the final exam score you need to reach your target course grade. Enter current grade and final weight.

Estimate reading grade level with Flesch-Kincaid. Paste text to see grade level, reading ease, and word count.

Citation Generator — APA & MLA. Free, instant, runs in your browser.

Flashcard Formatter — Q&A to Markdown. Free, instant, runs in your browser.

APA to MLA Citation Converter. Free, instant, runs in your browser.

Roman Numeral Converter. Free, instant, runs in your browser.

Estimate how long it takes to read any text — shows slow, average, and fast reading times.

Count AI tokens for GPT-4o, Claude, Gemini, and more. Paste text and see estimated token, word, and character counts instantly.

Write markdown and preview the output in real time.

Build Markdown tables visually with a grid editor. Set alignment, add rows and columns, copy the output.

A quick text editor with find & replace, case transforms (uppercase, lowercase, title case), slug generation, and more.

Browse, search, and copy Unicode characters by category. Find arrows, math symbols, emojis, and special glyphs instantly.

Generate lorem ipsum placeholder text instantly.

Generate Mussum Ipsum placeholder text — a Brazilian lorem ipsum full of invented words and humor.

Generate Dilmes Ipsum placeholder text using real quotes from former Brazilian president Dilma Rousseff.

Click any emoji to instantly copy it to your clipboard. Search and browse 2,300+ Unicode emojis by category.

Count words, characters, sentences, and paragraphs in real time. Paste or type any text.

Calculate monthly mortgage payments, total interest, and full amortization schedule. Enter loan amount, rate, and term.

Calculate monthly loan payments and total interest for personal, auto, or business loans. See full amortization schedule.

Calculate compound interest with monthly contributions. See balance growth over time with a year-by-year breakdown.

Calculate compound annual growth rate between two values over any time period. Instant CAGR percentage.

Calculate years to financial independence using the 4% rule. Enter savings, expenses, income, and savings rate.

See how inflation erodes purchasing power. Enter an amount and year range using historical US CPI data.

Calculate weighted average share price across multiple purchases. Enter shares and price per lot.

Model dollar-cost averaging with recurring investments. See average cost per share and total invested.

DCF Calculator — Discounted Cash Flow NPV. Free, instant, runs in your browser.

Position Size Calculator — Risk per Trade. Free, instant, runs in your browser.

Crypto Profit Calculator. Free, instant, runs in your browser.

Generate CSS gradients visually with live preview.

Generate color shades and Tailwind CSS palettes from a single hex color. Export as CSS variables, Tailwind config, or design tokens.

Generate beautiful color palettes with 28 strategies — color theory, moods, decades, nature, and culture. Lock, export, download.

Generate a full Tailwind CSS color palette (50-950) from any hex color. Export as CSS variables or Tailwind config.

Generate complementary, triadic, analogous, split-complementary, and more color harmonies from any base color.

Browse a curated collection of beautiful color palettes. Filter by mood, search by color, and copy hex values instantly.

Convert colors between HEX, RGB, HSL, OKLCH, and LAB formats instantly. Includes a live color picker preview.

Check color contrast ratios for WCAG AA and AAA compliance. Test foreground and background colors for accessibility.

Create realistic WhatsApp chat screenshots. Edit messages inline, toggle dark mode, download as PNG.

Create realistic iMessage chat screenshots. Blue and gray bubbles, delivered/read receipts, download as PNG.

Create realistic Discord chat screenshots. Server-style messages with avatars, timestamps, and reactions.

Create realistic Instagram DM screenshots. Purple gradient header, heart reactions, disappearing messages.

Create realistic ChatGPT conversation screenshots. User prompts and AI responses with the official ChatGPT UI.

Create realistic X/Twitter post screenshots. Profile, tweet text, likes, retweets, and reply counts.

Create realistic Gmail email screenshots. From, to, subject, body with the official Gmail UI.

Build UTM-tagged URLs for Google Analytics campaign tracking. Add source, medium, and campaign parameters to any link.

Calculate A/B test statistical significance. Enter control and variant visitors and conversions to see p-value, lift, and significance.

Calculate marketing campaign ROI, ROAS, and profit. Enter revenue and ad spend for instant results.

Calculate customer acquisition cost, lifetime value, LTV:CAC ratio, and payback period for your marketing funnel.

YouTube Timestamp Link Generator. Free, instant, runs in your browser.