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All unit converters

Eleven conversion types and 237 ready-made value pages. Each one shows the answer, the formula behind it, a reference table and the questions people actually ask.

Length and height

Inches → cm

Inches to centimetres

Multiply by 2.54. The one people search for most — screens, furniture, luggage.

45 value pages

Cm → inches

Centimetres to inches

Divide by 2.54. Handy when a spec sheet is metric and the tool is imperial.

35 value pages

Inches → mm

Inches to millimetres

Multiply by 25.4. Standard in engineering drawings and plumbing sizes.

17 value pages

Inches → m

Inches to metres

Multiply by 0.0254. Useful once a diagonal passes a metre.

9 value pages

Feet → cm

Feet to centimetres

Multiply by 30.48. One foot is exactly twelve inches.

13 value pages

Feet → cm

Feet and inches to cm

Height in one step: (feet × 30.48) + (inches × 2.54).

21 value pages

Metres → ft

Metres to feet

Divide by 0.3048. Aviation altitudes and building heights.

15 value pages

Weight

Kg → lbs

Kilograms to pounds

Multiply by 2.20462. Gym plates, luggage limits, recipes.

27 value pages

Lbs → kg

Pounds to kilograms

Multiply by 0.45359237. The exact factor, not 2.2.

24 value pages

Distance

Miles → km

Miles to kilometres

Multiply by 1.609344. Road signs, races, rental cars.

16 value pages

Km → miles

Kilometres to miles

Divide by 1.609344. Fitness trackers and European road trips.

15 value pages

Jump straight to a popular value

These pages get the most traffic — screen sizes in inches converted to centimetres.

1 inch to cm 2.54 cm2 inches to cm 5.08 cm3 inches to cm 7.62 cm4 inches to cm 10.16 cm5 inches to cm 12.70 cm6 inches to cm 15.24 cm7 inches to cm 17.78 cm8 inches to cm 20.32 cm

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