Conversion · Popular
Unit Converter
A universal unit converter covering eight categories — length, weight, area, volume, temperature, speed, time and data storage — with instant, two-way conversion.
Result
1 m = 100 cm
Method
How this calculator works
Most conversions are linear: convert input to a base unit, then convert the base unit to the target. Temperatures use scale-specific formulas.
# Linear (length, weight, area, volume, speed, time, data)
result = (value × fromFactor) / toFactor
# Temperature (formulas)
°C → °F = °C × 9/5 + 32
°F → °C = (°F − 32) × 5/9
°C → K = °C + 273.15- Pick the category that matches the unit you have.
- Choose the source unit and type the value you want to convert.
- Choose the target unit — the result updates instantly, two-way.
- Use the swap button to flip the direction without retyping.
- Tap a quick-conversion chip below the result for the most common pairs.
Examples
Worked examples
Real numbers, end-to-end results.
1 mile
= 1.609 km · 5,280 ft · 1,609 m
100 °F
= 37.78 °C · 310.93 K
1 acre
= 4,046.86 m² · 43,560 ft²
1 GB
= 1,024 MB · 1,048,576 KB · 8,589,934,592 bits
Use cases
When to use it
- Convert recipes between metric and imperial.
- Translate measurements for international shipping or travel.
- Estimate file storage in different units.
- Compare car specifications across regions.
- Convert lab measurements for science homework or work.
FAQ
Frequently asked questions
Which unit categories does the converter support?
Eight categories: length, weight, area, volume, temperature, speed, time, and data storage. Each has the most common SI and imperial units pre-loaded.
Why are temperature conversions different from the others?
Temperature scales have offsets (e.g. 0°C = 32°F = 273.15 K), so they need formulas, not multipliers. We convert through Celsius internally for accuracy.
Are the conversion factors accurate?
Yes. We use NIST and ISO factors. For example, 1 inch is exactly 0.0254 metres by definition, and 1 lb is exactly 0.45359237 kg.
Can I link to a specific conversion?
Yes. Most conversions have dedicated pages under /convert/<from>-to-<to> for SEO and direct linking.
Does the converter work offline?
Once you have visited the page, yes — the unit data is bundled into the page itself, so no network call is needed.