This unit converter covers eight everyday measurement categories in one place: length, mass, temperature, area, volume, speed, data storage, and time. Pick a category, choose the units you are converting between, and type a number into either field. The other side converts live, and because it works in both directions you can enter the known value on whichever side you have it.
It is built for quick, practical questions. Convert kilometres to miles before a trip, grams to ounces while adapting a recipe, Celsius to Fahrenheit when reading a foreign weather report, or gigabytes to megabytes when sizing up files. Everything updates as you type, so you can nudge a number and immediately see how the converted value responds.
All the conversion arithmetic in this tool runs directly on your device using standard conversion factors built into the page. The numbers you type are calculated locally and are gone the moment you close the tab.
It uses the common decimal convention, where 1 kilobyte equals 1,000 bytes and 1 megabyte equals 1,000,000 bytes. This matches how storage manufacturers and most consumer contexts label sizes. Some operating systems report sizes using binary units of 1,024, which is why their figures can differ slightly from decimal ones.
Most conversions are a simple multiplication by a fixed factor, but temperature scales have different zero points, so the formulas include an offset. Converting Celsius to Fahrenheit, for example, means multiplying by 9/5 and then adding 32. That is why 0 in one scale is not 0 in another.
Conversions use standard, widely published factors, and results are rounded to a readable number of decimal places for display. For everyday use the answers are accurate; if you chain many conversions together, tiny rounding differences can accumulate in the final digits.