Converting between length, weight, temperature, and other units usually means looking up factors or using a separate app. The Unit Converter does it in the browser: enter a value and source and target units and get the result—no sign-up and no data sent to a server.
What unit types are supported?
Unit Converter supports length, weight, temperature, volume, area, speed, time, and digital storage. Both metric (SI) and imperial units are fully supported. Enter a number and select the source unit and target unit; conversion is instant. Conversion runs in your browser; your values are not stored or sent. Use it for recipes, travel, science, or any time you need to convert between measurement systems. Rounding and conversion factors can vary slightly between sources—we use standard factors; for critical use, verify with an authoritative source if your conversion differs from another site.
Key Features
- Unit types — Length, weight, temperature, volume, area, speed, time, and digital storage.
- Metric and imperial — Yes. Both metric (SI) and imperial units are fully supported.
- Input — Enter a number and select the source unit and target unit. Conversion is instant.
- Privacy — No. Your data is not sent to a server. Conversion runs in your browser. Your values are not stored or sent.
- No account — Use as often as you need without sign-up.
- Rounding — Rounding and conversion factors can vary slightly. We use standard factors; for critical use, verify with an authoritative source.
How to Use the Unit Converter
- Open the Unit Converter tool.
- Enter a value. Select source unit and target unit (e.g. km to miles, kg to lb). View the result.
- Use the "Use tool" button on the docs page if you are reading this from the documentation.
Real Use Cases
- Recipes — Convert cups to ml, oz to grams. Switch between US and metric recipe units.
- Travel — Convert miles to km, Fahrenheit to Celsius. Plan trips and pack for weather.
- Science and engineering — Convert between SI and imperial. Length, mass, temperature, pressure, etc.
- Digital storage — KB, MB, GB, TB. Understand file sizes and bandwidth.
- Sports and fitness — Convert pace, distance, weight. Use with BMI Calculator when needed.
- Teaching — Demonstrate conversion factors. Show metric vs imperial in one place.
Why Use the Unit Converter Instead of Alternatives?
- vs. Percentage Calculator — Percentage Calculator does percent math. This tool converts units. Different purpose.
- vs. Color Converter — Color Converter converts color formats. This tool converts measurement units. Different domain.
- vs. Timestamp Converter — Timestamp Converter converts time representation. This tool converts time units (e.g. seconds to hours). Use both as needed.
- vs. Manual — No need to remember conversion factors. Select units, enter value, copy result.
Rounding and conversion factors can vary slightly between sites. We use standard factors; for critical use, verify with an authoritative source if your conversion differs from another site.
Benefits for Everyone: Daily Life, Work, and School
- Daily life — Recipes, travel, shopping. Quick conversions.
- Work — Science, engineering, logistics. Standard factors in one place.
- School — Practice unit conversion. Multiple categories.
Common Mistakes
- Conversion different from another site — Rounding and conversion factors can vary slightly. We use standard factors; for critical use, verify with an authoritative source.
- Wrong unit type — Ensure source and target are the same quantity (e.g. length to length). Mixing length and weight gives wrong results.
- Expecting color conversion — This tool is for measurement units. For colors use Color Converter.
- Forgetting to copy — The result is not saved. Copy before closing the tab.
Frequently Asked Questions
What unit types are supported?
Length, weight, temperature, volume, area, speed, time, and digital storage.
Is metric and imperial supported?
Yes, both metric (SI) and imperial units are fully supported.
Enter a number and select the source unit and target unit. Conversion is instant.
Is my data sent to a server?
No. Conversion runs in your browser. Your values are not stored or sent.
When should I use a unit converter?
Use it for recipes, travel, science, or any time you need to convert between measurement systems.
Why is my conversion different from another site?
Rounding and conversion factors can vary slightly. We use standard factors; for critical use, verify with an authoritative source.
Unit Converter gives you instant conversion: enter value, select units, view result. No account, no server round-trip. For percentages use Percentage Calculator, for colors use Color Converter, and for timestamps use Timestamp Converter.
Use the Unit Converter tool to convert units.