Unit Converter

Convert length, weight, temperature, area, volume, speed, data and more with exact factors. Type “5 ft to cm”, convert both ways, and see every unit at once.

  • 15 categories
  • Type “5 ft to cm”
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How to convert units

  1. Type it or pick itWrite a conversion like “5 ft to cm” or “72 F in C”, or choose a category and the two units.
  2. Read the answerResults appear as you type – in either box, both ways. Lengths also show feet and inches, weights pounds and ounces.
  3. See every unitThe table converts your value into every unit in the category. Press Use to switch the target unit.

Handy conversions to remember

ConversionExact or roundedQuick mental estimate
1 inch = 2.54 cmExact4 inches ≈ 10 cm
1 foot = 30.48 cmExactFeet × 0.3 ≈ metres
1 mile = 1.609344 kmExact5 miles ≈ 8 km
1 kg = 2.20462 lbRoundedKilograms × 2.2 ≈ pounds
°F = °C × 9/5 + 32ExactDouble °C and add 30
1 m² = 10.7639 sq ftRoundedSquare metres × 10.75
1 acre = 0.404686 haRounded2.5 acres ≈ 1 hectare
1 US gallon = 3.785411784 LExactGallons × 3.8 ≈ litres
1 crore = 10 millionExact100 crore = 1 billion

Frequently asked questions

How accurate are the conversions?

Conversions use the exact definitions: 1 inch is exactly 2.54 cm, 1 pound is exactly 0.45359237 kg, and 1 US gallon is exactly 3.785411784 litres. Results are shown to 10 significant figures by default; you can change this.

How do I convert height in cm to feet and inches?

Choose Length, enter centimetres and convert to feet – the feet-and-inches breakdown appears under the result. For example, 170 cm = 5 ft 6.93 in. You can also type “5 ft 7 in to cm”.

What’s the difference between a GB and a GiB?

A gigabyte (GB) is 1,000,000,000 bytes; a gibibyte (GiB) is 1,073,741,824 bytes (1024³). Drive makers use GB, while some operating systems report GiB – which is why a 500 GB drive shows about 465 “GB”.

Why are US and UK gallons different?

The US gallon is 3.785 litres and the imperial (UK) gallon is 4.546 litres, so fuel economy in UK mpg is about 20% higher than the same car in US mpg. Pints and fluid ounces differ too.

Are Indian land units like cent, guntha and marla supported?

Yes, using their standard values: cent = 435.6 sq ft, guntha = 1,089 sq ft, ground = 2,400 sq ft and marla = 272.25 sq ft (kanal = 20 marla). Local values can differ – bigha in particular varies by state, so it isn’t included.

How do lakh and crore compare to million and billion?

1 lakh = 100,000, 10 lakh = 1 million, 1 crore = 10 million, and 100 crore = 1 billion. The Numbers category converts between them and shows both Indian and international digit grouping.

How do I convert L/100 km to mpg?

Fuel economy units are inverses, so they can’t be converted with a simple multiplier. Choose Fuel economy: 8 L/100 km is 29.4 US mpg or 35.3 UK mpg.

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