Length Converter
Convert a length between metric, imperial and nautical units.
Unit Converters tools
Convert a measurement without hunting for the right formula. Length, weight, volume, area, speed, temperature and digital storage each have their own converter, with exact factors and a result you can copy. Cooking amounts and recipe scaling sit alongside them.
39 tools in this part of the catalogue.
Tools to start with
Mass and Weight Unit Converter
Convert a mass between metric and imperial units, naming each ton.
Temperature Converter
Convert a temperature between Celsius, Fahrenheit and Kelvin.
Length, area and volume5 tools
Length Converter
Convert a length between metric, imperial and nautical units.
Area Converter
Convert a land or surface area between metric and international units.
Volume Converter
Convert a volume between metric, cubic, US liquid and imperial units.
Scale Drawing Calculator
Convert real or drawing lengths with an explicit ratio.
Ring Size Converter
Compare diameter and circumference references.
Weight and speed2 tools
Mass and Weight Unit Converter
Convert a mass between metric and imperial units, naming each ton.
Speed Converter
Convert speed units or a running pace and see the reciprocal measure.
Temperature and digital storage4 tools
Temperature Converter
Convert a temperature between Celsius, Fahrenheit and Kelvin.
Digital Storage Converter
Convert bits and bytes with named decimal or binary storage units.
Data Transfer Rate Converter
Convert rates without confusing bits, bytes or prefixes.
File Transfer Time Calculator
Estimate transfer time with a stated usable-rate share.
Cooking2 tools
Cooking Measurement Converter
Estimate cooking volume or mass from an ingredient density.
Recipe Scaler
Scale measured ingredients to the servings you want.
Applied units26 tools
Energy Converter
Convert joules, kilowatt-hours, calories and BTU.
Fuel Economy Converter
Convert km/L, mpg and liters per 100 km.
Power Converter
Convert watts, kilowatts and three named horsepower units.
Angle Converter
Convert degrees, radians, turns and arc units.
Pressure Converter
Convert pascals, bar, atmospheres, torr and psi.
Frequency and Period Converter
Convert positive frequency and period with f = 1/T.
Trip Fuel Cost Calculator
Estimate fuel needs using your distance and price.
Force Converter
Convert newtons, pound-force and kilogram-force.
Torque Converter
Convert torque values with explicit force-length units.
Density Converter
Convert mass per volume with clearly named units.
Viscosity Converter
Convert viscosity units with density for cross-type results.
Acceleration Converter
Convert acceleration and standard-gravity multiples.
Flow Rate Converter
Convert flow rates with explicit time and density choices.
Electric Charge Converter
Convert coulombs and ampere-hours as charge units.
Electric Current Converter
Convert amperes, milliamperes and microamperes.
Voltage Converter
Convert volts, millivolts and kilovolts.
Resistance and Conductance Converter
Convert ohms and siemens, including reciprocal values.
Capacitance Converter
Convert farad scales and decode three-digit pF codes.
Inductance Converter
Convert henry scales without interpreting component ratings.
Magnetic Flux Density Converter
Convert tesla and gauss as magnetic flux density.
Illuminance Converter
Convert lux and foot-candles for incident light.
Luminance Converter
Convert luminance units, keeping lux separate.
Radiation Unit Converter
Convert matching radiation quantities only.
Concentration Converter
Convert concentration with stated assumptions.
Office Text Format Converter
Convert plain Office paragraphs.
Shoe Size Reference Converter
Compare named adidas adult chart sizes.