Converter
Free Online Unit Converter
Convert length, weight, temperature, area, and speed online free.
1 Meter = 0.001 Kilometer
About this tool
Half the time you need a unit converter, it's because a recipe is in grams and your kitchen scale is in ounces. Or a product listing is in inches and you think in centimeters. This tool covers the usual suspects - length, weight, temperature, volume - and converts between them as you type, no "click to calculate" button needed.
We tried to keep the unit list practical rather than exhaustive. You'll find the common ones people actually search for: cm to inches, kg to pounds, Celsius to Fahrenheit, liters to gallons, and so on, instead of forty obscure units nobody uses outside a physics textbook.
One thing to know about temperature conversion specifically - it isn't a simple multiplication like the others. Celsius to Fahrenheit involves an offset (multiply by 9/5, then add 32), which is why some converters get it slightly wrong if they're not built carefully. We tested ours against standard conversion tables to make sure the numbers line up.
If you're converting for something that matters - cooking measurements, shipping weights, construction dimensions - round numbers carefully and double-check anything safety-critical. This tool is built for everyday accuracy, not laboratory precision.
How to use
Step 1: Select the source unit from the From dropdown and enter the value.
Step 2: Select the target unit from the To dropdown.
Step 3: The converted value will be shown instantly based on the selected units.
Frequently Asked Questions
They use standard conversion factors and should match what you'd get from a scientific calculator, accurate to several decimal places.
Yes - you can convert metric to imperial or imperial to metric in any direction the tool supports.
Because the two scales don't start at the same zero point. The formula accounts for that offset, which is why it looks a bit different from, say, converting kilometers to miles.
Volume-to-weight conversion depends on what you're measuring (flour and water don't weigh the same per cup), so we'd recommend checking ingredient-specific charts for baking rather than relying on a generic converter for that one.