Whether you're cooking with a recipe in metric, comparing prices across countries, or working on a science project, unit conversions are something we all deal with regularly. ToolKnit's Unit Converter makes it effortless.
8 Categories, One Tool
Our converter supports eight complete categories:
- Length — mm, cm, m, km, inches, feet, yards, miles
- Weight — mg, g, kg, metric tons, ounces, pounds, stones
- Temperature — Celsius, Fahrenheit, Kelvin
- Area — mm², cm², m², km², in², ft², acres, hectares
- Volume — mL, L, m³, US liquid gallons, quarts, pints, cups and fluid ounces. These are not Imperial measures.
- Speed — m/s, km/h, mph, knots, ft/s
- Data — bytes, KB, MB, GB, TB, PB
- Time — ms, seconds, minutes, hours, days, weeks, years
Bidirectional & Instant
Type in either field and the other updates in real time. No button to click, no page reloads. The conversion formula is displayed below the result so you always know the math behind it.
Common Conversions
Some of the most popular conversions people search for:
- 1 inch = 2.54 cm
- 1 mile ≈ 1.609 km (rounded)
- 1 pound ≈ 0.4536 kg (rounded)
- 32°F = 0°C
- 1 US liquid gallon ≈ 3.785 liters (rounded)
- The tool's legacy labels show 1 GB = 1,024 MB using binary factors. In IEC notation this is 1 GiB = 1,024 MiB; SI decimal 1 GB = 1,000 MB is a different convention.
Privacy First
Entered measurement values are converted in the browser without a conversion API. The loaded calculator can keep working offline while the page stays open; reopening an uncached page still needs a connection.
Try it now: Open Unit Converter — free, instant, no sign-up required.