Real-time tools
Tools with live updates — calculations, formatting, and validation as you type. 114 tools across 8 categories.
Health76
FOUR Score Coma Scale
Full Outline of UnResponsiveness (FOUR) score for coma assessment.
Fisher Scale for Subarachnoid Hemorrhage
Grade subarachnoid hemorrhage by CT scan appearance using the Fisher scale.
Glasgow Coma Scale with Pupil Response (GCS-P)
Glasgow Coma Scale with pupil reactivity score (GCS-P).
Lawton IADL Scale
Lawton Instrumental Activities of Daily Living scale for functional assessment in elderly.
Ramsay Sedation Scale
Ramsay scale for level of sedation assessment (1–6).
RASS Scale (Richmond Agitation-Sedation)
Richmond Agitation-Sedation Scale (RASS) for ICU sedation assessment.
SAS Sedation Scale (Riker)
Riker Sedation-Agitation Scale (SAS) for ICU sedation.
CCS Angina Grading Scale
Canadian Cardiovascular Society (CCS) functional classification of angina pectoris.
Aldrete Score Calculator
Aldrete and Kroulik post-anesthesia recovery score.
Pack Year Calculator
Calculate cumulative cigarette smoking exposure in pack-years.
Candida Score
Add up four ICU risk factors: a total of 3 or more flags invasive candidiasis in non-neutropenic patients and justifies an antifungal work-up.
CHADS2 Score
Estimate the yearly stroke risk of non-valvular atrial fibrillation, running from roughly 1.9 percent at zero points to 18 percent at six.
NYHA Functional Classification
Place a heart failure patient in class I through IV by how much ordinary activity it takes to bring the symptoms on.
GELF Criteria for Follicular Lymphoma
Check the GELF markers of high tumor burden to settle whether follicular lymphoma calls for treatment now or watchful waiting.
DAS-28 CRP (Rheumatoid Arthritis)
Disease Activity Score (28 joints) with CRP for rheumatoid arthritis activity.
DAS-28 ESR (Rheumatoid Arthritis)
Disease Activity Score (28 joints) with ESR for rheumatoid arthritis activity.
ABCD2 Score for TIA
ABCD2 score for stroke risk after transient ischemic attack.
AIMS65 Score (Upper GI Bleed)
Albumin, INR, mental status, systolic pressure and age combine into a 0 to 5 estimate of in-hospital death after an upper GI bleed.
APACHE II Score
Twelve physiologic variables plus age and chronic health status, scored 0 to 71, with the predicted ICU mortality attached to each band.
BISAP Score (Pancreatitis Mortality)
Five findings available within the first 24 hours flag which acute pancreatitis admissions carry the higher mortality, well before a CT severity index is usable.
Clinical Pulmonary Infection Score (CPIS)
Weigh temperature, white count, secretions, oxygenation, chest film and cultures into a 0 to 12 score; anything above 6 argues for treating ventilator-associated pneumonia.
CRUSADE Bleeding Score
Estimate in-hospital major bleeding risk in NSTE-ACS from eight variables, then weigh it against ischemic risk before choosing antithrombotics.
CURB-65 Pneumonia Severity Score
CURB-65 score for community-acquired pneumonia severity and mortality risk.
Alvarado Score for Appendicitis
Add up the eight MANTRELS findings to gauge how likely acute appendicitis is, and whether to observe, image, or call surgery.
Caprini DVT Risk Score
Caprini Risk Assessment for venous thromboembolism in surgical patients.
Modified Centor Score (Strep Pharyngitis)
Modified Centor score for streptococcal pharyngitis probability.
CHA2DS2-VASc Score
Seven risk factors give a 0 to 9 stroke risk score for non-valvular atrial fibrillation, with the annual risk and the anticoagulation threshold for each sex.
Child-Pugh Score (Cirrhosis)
Child-Pugh score for prognosis of chronic liver disease and cirrhosis.
NAFLD Fibrosis Score
Age, BMI, glucose status, AST/ALT, platelets and albumin give a non-invasive read on advanced fibrosis in fatty liver, with both NFS cutoffs applied.
Framingham Risk Score
10-year cardiovascular disease risk by Framingham equations.
ASCVD Risk Calculator
10-year heart attack and stroke risk by the ACC/AHA Pooled Cohort Equations.
PREVENT Risk Calculator
10- and 30-year risk of CVD, ASCVD and heart failure by the AHA PREVENT equations.
Khorana Score (VTE Risk in Cancer)
Predict chemotherapy-associated clot risk in ambulatory cancer patients from cancer site, blood counts and BMI, plus the threshold where prophylaxis is worth considering.
Lee Revised Cardiac Risk Index (RCRI)
Lee RCRI for preoperative cardiac risk in non-cardiac surgery.
Maddrey Score Calculator
Enter prothrombin time, the lab control PT and bilirubin to get the discriminant function and see whether alcohol-associated hepatitis crosses the DF 32 steroid threshold.
Mayo Score for Ulcerative Colitis
Combine stool frequency, rectal bleeding, endoscopy and physician assessment into a 0 to 12 activity score, or drop the endoscopy item for the partial Mayo.
Padua Prediction Score
Padua score for VTE risk in hospitalized medical patients.
Ranson Criteria for Acute Pancreatitis
Five admission signs plus six at 48 hours give a mortality estimate for acute pancreatitis, with the score of 3 that flags severe disease.
RoPE Score (Paradoxical Embolism)
Risk of Paradoxical Embolism (RoPE) score for cryptogenic stroke with PFO.
Rockall Score (Upper GI Bleed)
Grade rebleeding and mortality risk after an upper GI bleed, using age, shock and comorbidity alone or the complete score once endoscopy is done.
San Francisco Syncope Rule
San Francisco Syncope Rule for predicting serious outcomes after syncope.
ASPECTS Score (Stroke CT)
Alberta Stroke Program Early CT Score (ASPECTS) for early ischemic changes in stroke.
Wells Score for Pulmonary Embolism
Seven findings put a suspected pulmonary embolism into low, moderate or high probability, so you know whether to send a D-dimer or go straight to CTA.
Wells Score for DVT
Ten clinical items, one of them worth minus two, give the pre-test probability of deep vein thrombosis and whether a D-dimer can settle it without ultrasound.
FIB-4 Index
FIB-4 index for non-invasive liver fibrosis assessment.
HAS-BLED Score
Nine factors give the one-year major bleeding risk on anticoagulation for AF, and flag which of them (BP, alcohol, NSAIDs, labile INR) you can actually fix.
HEART Score
HEART Score for major adverse cardiac events in chest pain patients.
MELD & MELD-Na Score
Model for End-Stage Liver Disease (MELD) and MELD-Na scores for cirrhosis prognosis.
NEWS 2 Score
National Early Warning Score 2 (NEWS 2) for clinical deterioration detection.
NIHSS Stroke Scale
National Institutes of Health Stroke Scale (NIHSS) for stroke severity.
Pneumonia Severity Index (PSI/PORT)
Pneumonia Severity Index (PSI/PORT) for mortality risk in community-acquired pneumonia.
qSOFA Score
Quick Sepsis-Related Organ Failure Assessment (qSOFA) for sepsis screening.
Sepsis-Induced Coagulopathy (SIC) Score
PT-INR, platelet count and a capped SOFA subscore decide whether sepsis-induced coagulopathy is present, catching it earlier than the overt DIC criteria.
SOFA Score
Sequential Organ Failure Assessment (SOFA) score for ICU organ dysfunction.
TIMI Risk Score (STEMI)
Eight weighted variables give 30-day mortality after ST-elevation MI, from under 1 percent to well past 20, for triage and prognosis at the bedside.
TIMI Risk Score (NSTEMI / UA)
Seven equal-weight criteria give the 14-day risk of death, MI or urgent revascularization in unstable angina and NSTEMI, steering the invasive versus conservative call.
GRACE Score (ACS)
GRACE score for in-hospital and 6-month mortality in acute coronary syndrome.
DKA Severity Calculator
Arterial pH, bicarbonate and mental status grade a diabetic ketoacidosis episode mild, moderate or severe by whichever parameter is worst.
SCORAD Index (Atopic Dermatitis)
SCORAD Index for severity of atopic dermatitis.
PASI Score (Psoriasis Severity)
Rate erythema, induration, scaling and area involved for head, arms, trunk and legs; the regional weights add up to a PASI from 0 to 72.
PESI Score (Pulmonary Embolism Severity)
Pulmonary Embolism Severity Index (PESI) for 30-day mortality.
Pediatric Dehydration Severity
Four bedside signs (appearance, eyes, mucous membranes, tears) put a child with gastroenteritis on a 0 to 8 dehydration scale that guides rehydration.
Malignant Hyperthermia Score
Pick the highest indicator in each clinical process and the Larach scale ranks how likely an intraoperative event really was malignant hyperthermia, rank 1 to 6.
CDAI (Crohn's Disease Activity Index)
Crohn's Disease Activity Index (CDAI) for assessing Crohn's disease activity.
Bishop Score (Cervical Ripening)
Bishop score for predicting successful labor induction.
UCEIS Score Calculator
Score vascular pattern, bleeding and erosions at the worst-affected segment for a 0 to 8 endoscopic index that beats the Mayo subscore on inter-observer reliability.
Detsky Cardiac Risk Index
Weight MI timing, angina class, pulmonary edema and seven more factors into a Detsky class I to III for cardiac risk before non-cardiac surgery.
Goldman Cardiac Risk Index
The original 1977 nine-factor index, scoring perioperative cardiac complication risk from S3 gallop, recent MI, arrhythmia and surgery type into classes I to IV.
Harvey-Bradshaw Index (Crohn's)
Harvey-Bradshaw Index for Crohn's disease activity (simplified CDAI).
Injury Severity Score (ISS)
Grade the six body regions on the AIS scale; the three worst get squared and summed into the 0 to 75 trauma score where anything above 15 counts as major trauma.
Simplified PESI Score
Six yes-or-no criteria split acute PE into low risk (all absent, roughly 1 percent 30-day mortality) and high risk, the first gate for outpatient treatment.
R-ISS Score (Multiple Myeloma)
ISS stage, high-risk FISH cytogenetics and serum LDH combine into R-ISS stage I, II or III for myeloma prognosis and trial stratification.
PERC Rule (Pulmonary Embolism)
Eight bedside criteria that, all negative in an already low-risk patient, let you close out pulmonary embolism without a D-dimer or a scan.
GWTG-HF Risk Score
Seven admission variables (BP, BUN, sodium, age, heart rate, race, COPD) map to in-hospital mortality in acute heart failure, from under 1 percent to over 50.
MASCC Score Calculator
Total seven items to a maximum of 26; a score of 21 or more marks febrile neutropenia as low risk and opens the door to oral outpatient antibiotics.
TASH Score (Massive Transfusion)
Hemoglobin, base excess, vitals, FAST and fracture pattern give the probability that a trauma patient will need massive transfusion, so the protocol fires early.
Developer14
Format and Validate JSON Online
Format, minify and validate JSON instantly.
Generate MD5 SHA-256 Hash Online
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input instantly.
Decode JWT Token Online
Decode and inspect JWT tokens instantly — view header, payload, and signature.
Generate UUID v4 Online
Generate one or many UUIDs instantly — supports v1, v4, and v5.
Number Base Converter
Convert numbers between decimal, hexadecimal, binary, and octal instantly. Supports integers and fractions.
Calculate AI API Cost Online
Estimate per-request cost for GPT-4o, Claude, Gemini, and more. Enter token counts and see input, output, and total pricing.
JSON Diff — Compare Two JSON Objects
Compare two JSON documents and highlight added, removed, and changed keys. Formatted side-by-side diff.
JSON Schema Validator Online
Validate JSON data against a JSON Schema. Paste instance and schema to see errors instantly.
Hash Identifier — Detect Hash Type
Identify hash types from pasted digests. Detect MD5, SHA-256, bcrypt, and more. Paste only, runs in browser.
JWT Security Checker — Audit Tokens
Audit pasted JWT tokens for security issues. Flag alg none, expiry, and missing claims. Runs in your browser.
JSON Schema Generator from JSON
JSON Schema Generator from JSON. Free, instant, runs in your browser.
Compare Two Hashes Online
Compare Two Hashes Online. Free, instant, runs in your browser.
JSON Flatten — Nested to Dot Notation
JSON Flatten — Nested to Dot Notation. Free, instant, runs in your browser.
JSON Path Tester Online
JSON Path Tester Online. Free, instant, runs in your browser.
Education8
Scientific Calculator Online
Full-featured scientific calculator with trigonometry, logarithms, exponents, and expression history.
Graph Calculator — Plot Functions
Plot mathematical functions on an interactive graph. Supports multiple equations, zoom, pan, and real-time updates.
Algebra Calculator — Solve & Simplify
Simplify expressions, factor polynomials, solve equations, and compute derivatives. Renders math with LaTeX.
Percentage Calculator Online
Calculate percentages, increases, decreases, proportions, and find original values before percentage changes. 9 calculation types.
GPA Calculator — 4.0 Scale
Calculate GPA from letter grades and credit hours on a 4.0 scale. Add courses and see weighted GPA instantly.
Grade Calculator — Weighted Average
Calculate weighted course grade from assignment scores and weights. See your overall percentage instantly.
Final Grade Calculator — Score Needed
Calculate the final exam score you need to reach your target course grade. Enter current grade and final weight.
Reading Level Calculator — Flesch-Kincaid
Estimate reading grade level with Flesch-Kincaid. Paste text to see grade level, reading ease, and word count.
Business6
Profit Margin Calculator
Calculate gross profit, net profit, and margin percentage from revenue and costs. Updates instantly.
Break-even Calculator
Find your break-even point in units and revenue. Enter fixed costs, price per unit, and variable cost per unit.
ROI Calculator — Return on Investment
Calculate return on investment percentage from initial cost and final value. See profit and ROI instantly.
Commission Calculator — Sales Commission
Calculate sales commission from deal value and commission rate. Supports flat rate and tiered percentages.
Pricing Calculator — Markup & Margin
Calculate selling price from cost and markup or margin. See profit per unit instantly.
Currency Margin Calculator
Currency Margin Calculator. Free, instant, runs in your browser.
Color5
Color Shades Generator
Generate color shades and Tailwind CSS palettes from a single hex color. Export as CSS variables, Tailwind config, or design tokens.
Color Harmony Generator
Generate complementary, triadic, analogous, split-complementary, and more color harmonies from any base color.
Convert Colors Between Formats
Convert colors between HEX, RGB, HSL, OKLCH, and LAB formats instantly. Includes a live color picker preview.
Color Contrast Checker (WCAG)
Check color contrast ratios for WCAG AA and AAA compliance. Test foreground and background colors for accessibility.
Color Blindness Simulator
Preview how colors and images appear to people with color blindness — protanopia, deuteranopia, tritanopia, and more.
Marketing3
A/B Test Significance Calculator
Calculate A/B test statistical significance. Enter control and variant visitors and conversions to see p-value, lift, and significance.
Calculate Campaign ROI Online
Calculate marketing campaign ROI, ROAS, and profit. Enter revenue and ad spend for instant results.
Calculate CAC and LTV Online
Calculate customer acquisition cost, lifetime value, LTV:CAC ratio, and payback period for your marketing funnel.