📏 Unit Converter
Quick answer
Unit conversion works by changing every quantity into a single base unit and back out again: result = value × (factor of the from-unit) ÷ (factor of the to-unit), where each factor is the unit's size relative to the base (metre, kilogram, litre and so on). The factors used here are the exact international definitions, so an inch is exactly 2.54 cm and a pound is exactly 0.45359237 kg.
10 Inch =
1 Inch = 0.0254 Meter
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How to use the Unit Converter
- Choose a category such as Length, Weight or Speed.
- Type the value you want to convert.
- Select the unit you have (From) and the unit you want (To).
- Click "Convert" — or change any field and the result refreshes.
- Read the formula line to see the exact base-unit factor used.
Frequently asked questions
How many centimetres are in an inch?
Exactly 2.54 cm — the inch has been defined as 25.4 millimetres since 1959. So a 5'7" person is 67 inches, which is 170.18 cm.
Is a kilobyte 1,000 or 1,024 bytes?
Both conventions exist. This tool uses the binary convention (1 KB = 1,024 bytes) used by operating systems for file sizes. Hard-drive makers use the decimal version (1 KB = 1,000 bytes), which is why a "500 GB" drive shows about 465 GB in your system.
How do I convert fuel consumption between L/100 km and MPG?
They are reciprocals: MPG (US) = 235.215 ÷ (L/100 km). So 6 L/100 km equals about 39.2 MPG US, and 40 MPG equals about 5.88 L/100 km. Lower L/100 km is better; higher MPG is better.