Length Converter
Convert metric and imperial lengths, from millimeters to miles.
ONE LESS THING TO WORK OUT
Conversions & Units
The same quantity, in the units you need.
8 free calculators · Formulas included8 calculatorsin Conversions & Units
Currency Converter
Convert with your explicit exchange rate and inspect the rounding. No hidden or invented market rate.
Data Size Converter
Convert bits, bytes, decimal storage units, and binary memory units.
EV Trip Energy & Charging Scenario
Estimate trip energy, a reserve, grid energy, and a charging-time lower bound.
Road Trip Fuel & Cost Calculator
Plan fuel, detours and trip cost with explicit US or Imperial gallon conventions.
Speed Converter
Convert km/h, mph, meters per second, feet per second, and knots.
Temperature Converter
Convert Celsius, Fahrenheit, and Kelvin with the correct scale offsets.
Weight Converter
Convert grams, kilograms, pounds, ounces, and metric tonnes.
Every tool is free. Formulas and assumptions are included.