Unit Converter
Convert between units of length, weight, temperature, volume, area, speed and digital storage. Fast, accurate and completely free.
🔒 Runs 100% in your browser — nothing is uploaded
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Popular conversions
- centimeters to inches
- inches to centimeters
- meters to feet
- feet to meters
- kilometers to miles
- miles to kilometers
- millimeters to inches
- meters to yards
- kilograms to pounds
- pounds to kilograms
- grams to ounces
- ounces to grams
- stone to pounds
- pounds to stone
- Celsius to Fahrenheit
- Fahrenheit to Celsius
- Celsius to Kelvin
- liters to gallons (US)
- gallons (US) to liters
- milliliters to cups (US)
- cups (US) to milliliters
- tablespoons to teaspoons
- acres to square feet
- hectares to acres
- square meters to square feet
- miles per hour to kilometers per hour
- kilometers per hour to miles per hour
- knots to miles per hour
- gigabytes to megabytes
- megabytes to kilobytes
About the unit converter
Convert between metric and imperial units instantly. Choose a category, enter a value and pick your units — the result updates as you type. Every calculation runs locally in your browser using exact conversion factors, so it is fast, accurate and private.
Frequently asked questions
Which units can I convert?
Length, weight, temperature, volume, area, speed and digital storage, including both metric and imperial (US) units.
How accurate are the conversions?
Conversions use exact, standard factors (for example 1 inch = 2.54 cm) and results are shown to 8 significant figures.
Is anything sent to a server?
No. All conversions are calculated instantly in your browser.