📏 Unit Converter
Convert between all units instantly — length, weight, temperature, volume, speed, area and more.
More About Unit Conversion
Unit conversion is essential for international travel, cooking with recipes from different countries, engineering and construction projects, scientific calculations, and everyday tasks like understanding weather temperatures or vehicle speeds.
Common Conversion Needs
Length conversions (km to miles, cm to inches) are essential for travel and DIY projects. Weight conversions (kg to pounds) help with shipping, fitness and cooking. Temperature conversions (Celsius to Fahrenheit) are useful when traveling or following international recipes.
Frequently Asked Questions
How accurate are these conversions?
All conversions use precise standard conversion factors and display results with appropriate decimal precision.
Can I convert between any units in the same category?
Yes, select any "from" and "to" unit within a category for instant conversion.
Why does the US use different units from most of the world?
The US primarily uses the imperial system (miles, pounds, Fahrenheit) while most other countries use metric (kilometers, kilograms, Celsius) — a historical holdover rather than a technical advantage. This is exactly why a converter is useful: recipes, product specs, and travel distances often need translating between the two systems.