Unit Converter
Convert between units of length, weight, temperature, speed, area, volume, digital data and time all in one free tool. Pick a category, enter a value, and the answer appears instantly, with no sign-up and no ads in the way.
Quick answer
To use this unit converter, choose a category (like length or weight), enter your value, and select the units to convert from and to. The result appears instantly in your browser — free, with no sign-up, and it works on any device.
How to use the unit converter
Choose a category length, weight, temperature, speed, area, volume, data or time.
Enter the value you want to convert.
Pick the “from” and “to” units using the dropdowns.
The converted result appears instantly, along with a handy reference table.
What you can convert
This universal converter covers the units people need most:
- Length: millimeters, centimeters, meters, kilometers, inches, feet, yards, miles.
- Weight: milligrams, grams, kilograms, tonnes, ounces, pounds, stones.
- Temperature: Celsius, Fahrenheit, Kelvin.
- Speed: m/s, km/h, mph, ft/s, knots.
- Area: square meters, square feet, acres, hectares and more.
- Volume: milliliters, liters, cubic meters, cups, pints, gallons and more.
- Data: bytes, kilobytes, megabytes, gigabytes, terabytes.
- Time: milliseconds, seconds, minutes, hours, days, weeks.
Where a unit converter helps
A single converter saves time across everyday tasks checking your height or weight in different units, converting recipe measurements between metric and US cups, working out distances and speeds while travelling, comparing file sizes in MB and GB, or converting areas for property and gardening. Instead of hunting for a separate tool each time, you can switch category and get an accurate answer in seconds.
Metric and imperial units
Most of the world uses the metric system meters, kilograms, Celsius while the United States and a few others still use imperial units such as feet, pounds and Fahrenheit. As travel, online shopping and international recipes bring the two systems together, being able to convert quickly between them is genuinely useful. This tool handles both systems across eight categories, so you rarely need another converter.
Why use this unit converter
- All-in-one eight categories of units in a single tool.
- Instant & accurate results update as you type, using standard conversion factors.
- Free no sign-up, no limits, no clutter.
- Reference table included see common conversions at a glance.
- Works everywhere any browser on desktop or mobile, nothing to install.
Frequently asked questions (FAQ's)
Is this unit converter free?
Yes, completely free, with no sign-up and no usage limits.
What units can I convert?
Length, weight, temperature, speed, area, volume, digital data and time.
Do I need to install anything?
No. It runs in any browser on desktop or mobile.
How accurate is it?
It uses standard conversion factors and updates instantly as you type.
Can I convert temperature here too?
Yes. Choose the Temperature category to convert between Celsius, Fahrenheit and Kelvin.
Can I convert data sizes like MB to GB?
Yes. Choose the Data category to convert between bytes, KB, MB, GB and TB.
Does it show a conversion table?
Yes. Along with the instant result, a reference table of common conversions is shown.