Common conversion references
- 1 mile = 1.60934 kilometers
- 1 kilogram = 2.20462 pounds
- 1 gallon (US) = 3.78541 liters
- 0°C = 32°F = 273.15 K
- 1 acre = 4046.86 square meters
Related Tools
About the Unit Converter
Unit conversion errors have real consequences — NASA lost a ₹8,000-crore Mars orbiter because one team used metric and another imperial. Everyday life is full of the same traps at smaller stakes: recipes in Fahrenheit, gym weights in pounds, land in acres, fuel economy in km/l versus mpg, fabric in yards. A reliable converter removes the arithmetic — and the risk — from every one of these.
This tool converts across the categories people actually need: length (mm to km, inches to miles), weight (mg to tonnes, ounces to pounds), temperature (Celsius, Fahrenheit, Kelvin), area, volume, speed, time, and data storage. Conversions run live as you type, with sensible precision — no 15-digit false-accuracy noise.
The temperature note matters: Celsius↔Fahrenheit is not a simple multiplication but an offset formula (°F = °C × 9/5 + 32), which the tool applies correctly — the most common manual-conversion mistake.
How to use the Unit Converter
- 1 Choose the measurement category — length, weight, temperature, and so on.
- 2 Enter the value and pick the unit you are converting from.
- 3 Pick the target unit; the result updates instantly as you type.
- 4 Switch categories or units freely — values persist so you can chain comparisons.
Key features
Eight categories
Length, weight, temperature, area, volume, speed, time, and data in one place.
Live bidirectional maths
Change either value or unit and the counterpart updates instantly.
Correct temperature physics
Offset-based Celsius/Fahrenheit/Kelvin formulas, not naive multiplication.
Sensible precision
Results rounded to readable digits — accurate without decimal noise.
Who uses the Unit Converter?
- Cooking with international recipes (cups↔ml, °F↔°C, oz↔g).
- Fitness: converting dumbbells and bodyweight between kg and lb.
- Travel: understanding mph, mpg, gallons, and feet in a metric country.
- Real estate and agriculture: acres↔hectares, sq ft↔sq m, guntha and cent conversions.
- Engineering homework: data-size, speed, and force units checked instantly.
- Online shopping: sizing imported goods described in foreign units.
Tips and best practices
- Keep the two anchors memorised: 1 inch = 2.54 cm exactly, and 1 kg = 2.2046 lb — sanity checks for every other figure.
- Temperature quickies: 0 °C = 32 °F, 37 °C = 98.6 °F, 100 °C = 212 °F; interpolate mentally from these.
- For rough fuel maths: 1 km/l ≈ 2.35 mpg (US). For rough data: 1 GB ≈ 1,000 MB (storage marketing) but 1,024 MB (memory).
- Beware mass vs weight in physics homework — kg is mass; newtons are force; kgf is the bridge.
- Land units are regional in India (bigha, guntha, cent vary by state); convert via the standard anchor (acre/hectare) rather than region-to-region memory.
Frequently asked questions
Multiply by 9/5 and add 32: 25 °C → 25 × 1.8 + 32 = 77 °F. Reverse: subtract 32, then multiply by 5/9.
1 oz = 28.35 g; 1 lb = 453.6 g = 0.4536 kg; so 1 kg = 2.2046 lb. The tool computes all variants exactly.
Storage makers use decimal MB (10⁶ bytes); operating systems report binary MiB (2²⁰). A "500 GB" drive shows ~465 GiB in Windows — both are "correct".
Factors use internationally defined exact values where they exist (inch, pound) and standard approximations elsewhere, displayed to readable precision.
Standard anchors (acre, hectare, sq ft, sq m) are supported. Regional units like bigha vary by state — convert those to acres first with the local definition.