Unit Converter

Free browser-based tool. Use the controls below to get started.

QUICK GUIDE

Convert between measurement units

Select the measurement category, choose source and target units, and enter a value. Example: 1 kilometre equals 1,000 metres. Confirm the unit labels before relying on the converted number.

Choose a measurement category

Follow the fields and controls shown in the tool above.

Select source and target units

Check the selected settings and input values before continuing.

Enter a value and review the converted result

Review the output before copying, saving, or sharing it.

Processing behavior depends on the tool and browser. Do not use confidential or sensitive content unless you have confirmed how that specific tool handles it.

Read the full guide

ABOUT THIS TOOL

About the Unit Converter

The HandyTools Unit Converter changes a value from one unit to another. Choose a category, select the unit you are converting from and to, and type a number. The result updates as you type, and a swap button flips the two units.

It covers length, weight, temperature, volume, speed and data storage, which makes it handy for recipes, travel, shopping, school work and technical tasks. Calculations run in your browser.

Tips for best results

Check the unit names before you read the result; some units, such as cups or gallons, differ between countries.
Temperatures below absolute zero are not valid, and the tool will tell you if you enter one.
Very large or very small results are rounded to keep them readable.

Frequently asked questions

Which units can I convert?

Length, weight, temperature, volume, speed and data storage units.

Can I swap the units?

Yes. Use the swap button to reverse the From and To units.

Is the conversion exact?

Results use standard conversion factors and are rounded for display. For critical work, check the original precision you need.