Unit Converter
Convert units instantly: length, mass, temperature, area, volume and speed. Metric and imperial, with formula-driven accuracy.
About this tool
This unit converter handles six common categories — length, weight, temperature, area, volume and speed — in one widget. Pick the category, type a value, choose the from and to units, and press convert.
The converter applies exact conversion factors, including the tricky ones: miles to kilometers, pounds to kilograms, feet to meters and gallons to liters. Travelers, cooks, students and DIYers all get the precise number without doing unit math by hand.
FAQ
How do I convert miles to kilometers?
Multiply miles by 1.60934. This tool uses the same factor internally and shows the result instantly.
How do Celsius and Fahrenheit convert?
F = C x 9/5 + 32, and C = (F - 32) x 5/9. Kelvin adds only the absolute zero offset: K = C + 273.15.
Are US and UK gallons the same?
No. A US gallon is 3.785 liters while an imperial gallon is 4.546 liters. This converter uses US gallons.