Unit Converter Online: Length, Weight, Temperature & More
Convert between metric and imperial units instantly: length, weight, temperature, area (including marla and kanal), volume, speed, time and data storage.
All conversions
Quick answer: Pick a category, type a value and choose the units to convert from and to. The result and the formula appear instantly, together with the value in every other unit of that category. Popular conversions: 1 inch = 2.54 cm, 1 kg = 2.20462 lb, 0 °C = 32 °F, 1 mile = 1.609 km.
How to use the unit converter
- Select the category, for example Length or Area.
- Enter the number you want to convert. Decimals and negative values are allowed.
- Choose the From and To units, or tap a quick conversion button. Use Swap units to reverse the direction.
- Read the answer and the formula, or scan the All conversions list to see every unit at once.
Most searched conversions
| From | To | Multiply by |
|---|---|---|
| Inches | Centimeters | 2.54 |
| Feet | Meters | 0.3048 |
| Miles | Kilometers | 1.609344 |
| Kilograms | Pounds | 2.20462 |
| Ounces | Grams | 28.3495 |
| Liters | US gallons | 0.264172 |
| Square feet | Square meters | 0.092903 |
| Kilometers per hour | Miles per hour | 0.621371 |
Temperature is different: it is not a simple multiplication. °F = °C × 9/5 + 32, and °C = (°F − 32) × 5/9. Use the Temperature Converter for a full chart.
Marla and kanal land conversion
In Pakistan land is often measured in marla and kanal. This converter uses the standard 1 marla = 272.25 sq ft (25.29 m²) and 1 kanal = 20 marla = 5,445 sq ft. Some housing societies and cities use 225 or 250 sq ft per marla, so always confirm the local definition in property documents.
Metric vs imperial
Most of the world, including Qatar, Pakistan, India and Europe, uses the metric system (meters, kilograms, liters, Celsius). The United States mainly uses imperial units (feet, pounds, gallons, Fahrenheit), and the UK mixes both, for example miles on road signs and stones for body weight. A quick, accurate converter avoids mistakes in recipes, online shopping sizes, travel and construction measurements.
Frequently asked questions
What units can I convert?
Length, weight and mass, temperature, area including marla and kanal, volume, speed, time and data storage in bytes, kilobytes, megabytes and gigabytes.
How accurate is the unit converter?
It uses the official international definitions, such as 1 inch = 2.54 cm exactly and 1 pound = 0.45359237 kg, and shows up to 10 significant digits.
Is a GB 1000 or 1024 MB?
Storage makers use 1 GB = 1000 MB. Operating systems often use binary units, where 1 GiB = 1024 MiB. Both are available in the Data storage category.
Which gallon does the converter use?
Both. The US gallon is 3.785 liters and the UK imperial gallon is 4.546 liters, listed separately.
Does it work offline on my phone?
Once the page has loaded, all conversions happen in your browser, so it keeps working even with a weak connection.
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