Conversion Calculators
Unit Converter
A unit conversion multiplies a value by the exact factor between two units: one inch is 2.54 centimetres and one pound is 0.453592 kilograms. Pick a category — length, weight, volume, temperature, area, speed, data, time — then the units on each side; temperature is converted with offsets, not one factor.
Calculator
How It Works
Conversions use standard conversion factors. For example, 1 inch = 2.54 cm, 1 lb = 0.453592 kg, 1 gallon = 3.78541 liters. Temperature uses offset formulas: °F = (°C × 9/5) + 32.
About This Calculator
What It Does
Convert between hundreds of units across 9 categories: length, weight, temperature, volume, speed, area, data storage, time, and data transfer. Supports both metric and imperial systems.
Worked Example
Convert 1 meter to feet: 1 meter = 3.28084 feet. For temperature: 20°C = (20 × 9/5) + 32 = 68°F. For weight: 1 kilogram = 2.20462 pounds.
Real-World Usage
Convert recipes from metric to imperial, translate distances for travel between countries using different systems, interpret product specifications, or convert scientific measurements between unit systems.
Local Context
Most countries use the metric system, but the US, Liberia, and Myanmar primarily use imperial units. The UK uses a mix (miles for distance, Celsius for weather, but pints for beer). Canada officially uses metric but imperial persists in construction and cooking.
Last reviewed: May 2026.
Frequently Asked Questions
What unit categories are supported?
The converter supports length, weight, temperature, volume, speed, area, data storage, time, and data transfer speed.
Are imperial to metric conversions exact?
Conversions use internationally agreed conversion factors. Results are rounded to a reasonable number of decimal places for practical use.
How do I convert Celsius to Fahrenheit?
Multiply by 9, divide by 5, then add 32. For example, 20°C × 9/5 + 32 = 68°F. Our converter handles this automatically — just select Temperature as your category.
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