maratool45 new unit & sizing converters on maratool
The conversion section grew by 45 tools in one release. Here is the full map — every converter, its reference standard, and its guide.
Every tool below runs entirely in your browser with zero uploads, and every factor traces to an authoritative reference — NIST SP 811, the BIPM SI Brochure, NOAA, ACOG, ISO, or the US NRC — cited right on the page. Linear conversions share one audited engine; the special tools (tires, due dates, Beaufort winds) implement their published formulas. Pick a family:
How it works
- Find your quantity — the families below group all 45 tools.
- Open the tool — pick units, type a value, copy the result.
- Read the guide — each tool ships a post with its factor table and formula.
Dimension & mechanics
The everyday physical quantities — the conversions people reach for when reading a spec sheet, a recipe, or a datasheet from another country.
- Area Converter — guide
- Volume Converter — guide
- Pressure Converter — guide
- Energy Converter — guide
- Power Converter — guide
- Force Converter — guide
- Torque Converter — guide
- Acceleration Converter — guide
- Density Converter — guide
- Angle Converter — guide
- Frequency Converter — guide
- Bandwidth Converter — guide
Chemistry & flow
Lab and process-engineering units: amounts of substance, viscosities, and flow rates in both SI and US customary systems.
- Amount of Substance — guide
- Molar Mass Converter — guide
- Dynamic Viscosity — guide
- Kinematic Viscosity — guide
- Mass Flow Rate — guide
- Flow Rate Converter — guide
Electrical
Every prefix jump an electronics bench needs — from picofarads to kiloamps, plus the CGS units that haunt old datasheets.
- Capacitance Converter — guide
- Electric Charge — guide
- Electric Current — guide
- Electric Potential — guide
- Conductance Converter — guide
- Resistance Converter — guide
- Inductance Converter — guide
Magnetism
The SI↔CGS bridges (tesla-gauss, A/m-oersted, weber-maxwell, ampere-turn-gilbert) with their exact 4π relations.
Light & photometry
Lighting design, display specs, and photography: lux, foot-candles, nits, lumens, and candelas, kept straight.
- Lux to Foot-Candles — guide
- Luminance Converter — guide
- Luminous Energy — guide
- Luminous Flux — guide
- Luminous Intensity — guide
Radiation
Gray-rad, sievert-rem, and becquerel-curie with exact regulatory factors. Unit conversion only — never dose assessment.
Everyday & sizing
Real-world numbers: fuel economy, wind, tires, screens, clothing, hats — plus two health calculators, running pace and pregnancy due date.
- MPG to L/100km — guide
- Wind Speed Converter — guide
- Tire Size Calculator — guide
- Screen Size Calculator — guide
- Clothing Size Converter — guide
- Hat Size Converter — guide
- Running Pace Calculator — guide
- Due Date Calculator — guide