Every calculator you need
A growing suite of fast, clean tools that run entirely in your browser — no sign-up, no clutter, just answers.
Arithmetic
Everyday arithmetic with memory keys, backspace and full keyboard support.
Scientific
Trig, logs, powers, factorials and constants — in degrees or radians.
Graph
Plot equations and explore how functions behave.
BMI
Body mass index with a healthy-range scale for your build.
More on the way
New calculators are added regularly — suggest one on GitHub.
Currency
Convert between world currencies with live exchange rates.
Energy
Joules, calories, kilowatt-hours, electronvolts, TNT and more — exact factors, fully offline.
Weight
Kilograms, pounds, ounces, stones and more — instant conversions.
Speed
Kilometres and miles per hour, knots, mach and more — instant conversions.
More converters
New converters are added regularly — suggest one on GitHub.