Unit converters
114 instant conversions, grouped by category. Each opens its own page with a live converter and a reference table, and runs entirely in your browser.
Length
- centimeters to inches
- inches to centimeters
- millimeters to inches
- inches to millimeters
- feet to meters
- meters to feet
- meters to yards
- yards to meters
- centimeters to feet
- feet to centimeters
- centimeters to meters
- meters to centimeters
- millimeters to centimeters
- centimeters to millimeters
- kilometers to meters
- meters to kilometers
- feet to inches
- inches to feet
- yards to feet
- feet to yards
- miles to kilometers
- kilometers to miles
- miles to feet
- miles to yards
- meters to inches
- meters to millimeters
- kilometers to feet
Weight
- kilograms to pounds
- pounds to kilograms
- grams to ounces
- ounces to grams
- stone to pounds
- pounds to stone
- stone to kilograms
- kilograms to stone
- kilograms to grams
- grams to kilograms
- kilograms to ounces
- ounces to pounds
- pounds to ounces
- milligrams to grams
- grams to milligrams
- tonnes to kilograms
- tonnes to pounds
- kilograms to milligrams
Temperature
Speed
- miles per hour to kilometers per hour
- kilometers per hour to miles per hour
- miles per hour to feet per second
- feet per second to miles per hour
- kilometers per hour to meters per second
- meters per second to kilometers per hour
- knots to miles per hour
- miles per hour to knots
- knots to kilometers per hour
- meters per second to miles per hour
Volume
- liters to US gallons
- US gallons to liters
- milliliters to US fluid ounces
- US fluid ounces to milliliters
- liters to milliliters
- milliliters to liters
- US gallons to US quarts
- US quarts to US gallons
- US quarts to liters
- liters to US quarts
- US pints to liters
- liters to US cups
- US cups to milliliters
- milliliters to US cups
- tablespoons to teaspoons
- teaspoons to tablespoons
- US cups to US fluid ounces
- US fluid ounces to US cups
- US gallons to US fluid ounces
- US quarts to US pints
- US pints to US cups
Digital storage
- megabytes to gigabytes
- gigabytes to megabytes
- gigabytes to terabytes
- terabytes to gigabytes
- kilobytes to megabytes
- megabytes to kilobytes
- bytes to kilobytes
- kilobytes to bytes
- megabytes to bytes
- bits to bytes
- bytes to bits
- gibibytes to gigabytes
- gigabytes to gibibytes
- mebibytes to megabytes
- megabytes to mebibytes
- kibibytes to kilobytes
- bits to megabytes
Time
Frequently asked questions
How accurate are these converters?
Each uses the internationally defined conversion factor and computes at full floating-point precision, rounding only the displayed result. For legal, engineering or scientific work, confirm the significant figures you need.
Do they work offline?
Yes. Every conversion runs in your browser with no server call, so the pages keep working with no connection and nothing you type is uploaded.
A conversion I need is missing — can you add it?
Use the suggest-a-tool page. The list here covers the conversions people look up most; niche pairs get added on request.