1. What does this tool do
This free online unit converter converts between common units of length, weight, temperature, area, volume, speed, data, and time. Use it for metric to imperial conversion, Celsius to Fahrenheit, or miles to km. Get instant, accurate conversions without sign-up or upload—all in your browser. Ideal for cooking, travel, weather, tech (bytes/KB/MB), or homework.
2. How to use it
Quick start: Select quantity (e.g. Length, Temperature), choose "from" and "to" units, enter a value, and read the converted result. Copy if needed.
- Select quantity — Choose the type of conversion (e.g. Length, Weight, Temperature).
- Choose units — Pick the "from" and "to" units (e.g. miles and kilometres, or Celsius and Fahrenheit).
- Enter value — Type the number you want to convert.
- Read result — The converted value updates as you type. Copy if needed.
3. How it works
Conversion factors are defined for each quantity (e.g. 1 mile = 1.609344 km). The tool multiplies or divides the input by the appropriate factor. Temperature uses formula-based conversion (e.g. °C to °F: F = C × 9/5 + 32). All calculations run client-side in your browser. No data is sent to any server.
4. Use cases & examples
- Cooking — Convert grams to ounces, or cups to millilitres.
- Travel — Miles to kilometres, or mph to km/h.
- Weather — Celsius to Fahrenheit.
- Tech — Bytes to KB/MB/GB, or bits per second.
- School — Any supported unit pair for homework or labs.
Example
- 5 miles → ~8.05 km
- 100 °C → 212 °F
- 1 GB → 1024 MB
5. Limitations & known constraints
- Supported units only — Only units listed in the tool are available; custom or rare units are not supported.
- Precision — Results are rounded for display; use more digits in the tool if available for critical work.
- Data units — Binary (1024-based) and decimal (1000-based) options may differ; check which convention the tool uses for your case.