Conversion Calculator
Category
From
To
Converted Value1.6093
Formula1 mile = 1.609344 kilometer
This conversion calculator translates a value from one unit to another across several measurement categories: length, weight, volume, speed, area, digital data, and temperature. Within each linear category it converts by way of a base unit, while temperature uses its own offset-and-scale formulas. Results are rounded to four decimal places, and the tool also shows the conversion ratio so you can reuse it.
Formula
linear: result = value × (fromFactor / toFactor); temperature uses offset formulas via Celsius
- value
- The number you enter to convert
- fromFactor
- Factor that converts the source unit to the category base unit
- toFactor
- Factor that converts the base unit to the target unit
How it works
- Pick a category (such as length, weight, volume, speed, area, data, or temperature), then choose the unit you are converting from and the unit you are converting to.
- For linear categories the input is multiplied by the source unit's factor to reach a base unit (metres, kilograms, litres, m/s, m², or bytes) and then divided by the target unit's factor.
- Temperature is handled separately: the value is converted to Celsius first and then to the requested scale, since Fahrenheit and Kelvin involve an offset, not just a ratio.
Worked examples
Convert 5 miles to kilometres.
- Length base unit is the metre; 1 mile = 1609.344 m and 1 km = 1000 m.
- Ratio: 1609.344 / 1000 = 1.609344 km per mile.
- 5 × 1.609344 = 8.04672, rounded to 8.0467.
5 miles = 8.0467 kilometres (1 mile = 1.609344 km).
Convert 100 °F to Celsius.
- Temperature is not a simple ratio, so the value is taken through the offset formula.
- (100 − 32) × 5/9 = 68 × 0.5556.
- = 37.7778 °C.
100 °F = 37.7778 °C.
Frequently asked questions
- Which unit categories are supported?
- Length, weight, volume, speed, area, digital data (bytes through terabytes), and temperature. Each category has its own set of compatible units; you cannot convert across categories, such as length to weight.
- Why is temperature converted differently from other units?
- Most units scale linearly from zero, so a single ratio works. Temperature scales have different zero points, so the tool first converts to Celsius using an offset formula and then to the target scale.
- Does data conversion use 1000 or 1024?
- The data category uses binary multiples: 1 kilobyte is 1024 bytes, 1 megabyte is 1024 kilobytes, and so on up to terabytes.
- How precise are the results?
- Converted values are rounded to four decimal places, which is plenty for everyday use. For high-precision scientific work, carry the unrounded factors through your own calculation.