Unit Converter
Convert between units of length, weight, temperature, volume, and more. It is the quick reference for the conversions that come up in cooking, travel, study, and DIY.
Unit Converter
Enter a value, choose your units, and instantly convert between length, weight, volume, or temperature.
One tool for many unit systems
Daily life mixes unit systems constantly: a recipe in cups, a height in centimetres, a temperature in Fahrenheit, a distance in miles. Converting reliably between metric and imperial, and within each, avoids the small errors that ruin a recipe or a measurement.
Most conversions are a simple multiplication by a fixed factor, but temperature is different - it needs a formula with an offset, not just a ratio - which is why a dedicated converter is safer than a remembered rule of thumb.
Getting accurate results
Accuracy depends on choosing the right unit, not just the number.
- Watch unit families that share a name, like US versus UK gallons, which differ noticeably.
- For temperature, remember it converts by formula, so doubling Celsius does not double Fahrenheit.
- Keep enough decimal places for precise work; rounding early compounds error.
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FAQs
Which categories of units does it cover?▼
Common ones such as length, weight or mass, temperature, volume, area, and speed. You pick the category, then the from and to units.
Why is temperature converted differently?▼
Because temperature scales have different zero points, conversion uses a formula with an offset, not a simple multiplication. For example, Celsius to Fahrenheit is C x 9/5 + 32.
Are US and UK gallons the same?▼
No. A UK (imperial) gallon is larger than a US gallon, and pints and fluid ounces differ too. Choose the correct regional unit to avoid errors.
Is my conversion private?▼
Yes. It runs in your browser; nothing is uploaded.
How precise are the results?▼
Conversions use standard factors and are accurate to several decimal places. For scientific work, keep more decimals and round only at the end.
Can it convert cooking measurements?▼
Yes, for volume and weight. Note that cups to grams depends on the ingredient's density, so a generic volume-to-weight conversion is approximate for cooking.
Does it handle very large or very small values?▼
Yes. It can convert across a wide range, switching to scientific notation for extreme values.
What is the difference between mass and weight here?▼
Colloquially they are used interchangeably, and the converter treats kilograms and pounds as a mass conversion. True weight depends on gravity, but for everyday use the conversion is what you want.
Why does a converted value have a long decimal?▼
Because many conversion factors are not round numbers. Round the result to the precision your task needs.
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