Unit Converter
Convert between common units across eight categories: length, weight, temperature, area, volume, speed, time and digital storage. Type a value, pick your units and see the result instantly. Everything runs locally in your browser.
How to use
- 1
Pick a category
Choose from length, weight, temperature, area, volume, speed, time or digital storage using the dropdown at the top.
- 2
Enter your value and units
Type the value to convert on the left and choose the source unit. Pick the target unit on the right — the result updates as you type.
- 3
Swap or copy
Click the circular swap button to reverse the direction of the conversion. Click the copy icon next to the result to put it on your clipboard.
- 4
Use the quick reference
The reference panel below the converter shows the same value translated into every other unit in the category for at-a-glance comparison.
Common use cases
- Convert recipe measurements between metric and US units.
- Translate running pace between min/km and min/mile.
- Compute square footage from square metres for a real-estate listing.
- Quickly check how many bytes are in 12 MiB without doing the math.
Limitations
- Conversion factors use internationally agreed definitions (e.g. 1 in = 25.4 mm). Some imperial units have US vs. UK variants — only US units are provided here.
- Temperature conversion handles Celsius, Fahrenheit and Kelvin only (no Rankine or Réaumur).
- Results use 8 significant digits; very large or very small numbers are shown in exponential notation.
- The year unit is defined as exactly 365.25 days (Julian year) for consistency with SI conventions.
Frequently asked questions
Related tools
View allQR Code Generator
Generate QR codes for URLs, text, Wi-Fi and more.
Percentage Calculator
Calculate percentages, increases and decreases.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
UUID Generator
Generate RFC 4122 UUIDs (v4) in bulk.