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Unit converter
Convert length, height, weight, temperature, cooking measures, area, speed, file sizes and more by typing, with exact factors and the working. Free, with no account or uploads.
Type an amount and its unit, and what to turn it into: 70 kg to lb, 98.6F, 1½ cups to ml, 2 cups sugar in grams.
Exactly
180.34 cm
5 ft 11 in is exactly 180.34 cm.
Show it in
cminmftmmkmmiydft + in
How it is worked out
- Add the parts in inches: 5 ft + 11 in = 71 in.
- 1 inch is 2.54 cm, so multiply: 71 × 2.54 = 180.34 cm.
The same in other units
- 71 in
- 1.8034 m
- 1,803.4 mm
- 0.0018034 km
- ≈ 0.00112058 mi
- ≈ 1.97222 yd
What are you measuring?
Length and heightBest for mostcm, inches, feetHeights in feet and inches, sizes in cm, mm and inches.Weightkg, lb, stoneKilograms, pounds and ounces, stone, grams and tonnes.Temperature°C, °FCelsius, Fahrenheit and kelvin, with the formula.CookingCups, spoons, gramsCups and spoons, and cups of flour or sugar in grams.VolumeLitres, gallonsLitres and millilitres, US and UK gallons and pints.Distance and speedkm, miles, mphKilometres and miles, km/h, mph and knots.Area and landsq ft, acresSquare feet and metres, acres and hectares, gaj and guntha.File sizeMB, GBKilobytes to terabytes, counted by 1,000 and by 1,024.Something elsepsi, kWh, mpgPressure, energy, power, fuel economy and angles.
Cups, spoons, pints and gallons are
USUKMetric (250 mL cup)
A rounded answer is shown to this many significant digits; exact answers are shown in full.
Inches to the nearest
1/81/161/321/64
Every factor comes from its definition and is worked out exactly on your device. Nothing you type is sent anywhere.
A little help along the way
Follow these steps. Every option is explained underneath. Everything is worked out in your browser; nothing is sent anywhere.
- Type what to convertAn amount, its unit and what to turn it into: 70 kg to lb, 5'11", 98.6F or 3/4 cup flour in grams. With no unit after to, the usual one is chosen.
- Read the answerIt is said in words, exactly or about, with the forms people use: feet and inches, stone and pounds, spoonfuls, and both kinds of gigabyte.
- Show it in another unitPress a unit under the answer, or Turn it round to convert the answer back.
Every option explained
- Exact factors
- Every factor comes from its definition: an inch is 25.4 mm and a pound 0.45359237 kg exactly, a US gallon 231 cubic inches and a UK gallon 4.54609 litres. Answers are worked out exactly and rounded only to show them.
- Words with two meanings
- Ounces, cups, gallons, tons and mpg mean different amounts in different places. The page says which it read and offers the others; under More options, choose US, UK or metric cups and gallons.
- Cups to grams
- A cup of flour and a cup of sugar weigh different amounts, so say what it is. The weight comes from King Arthur Baking's chart and the answer says about.
- Temperatures
- The formula is shown with a thermometer. Turn on “It is a change in temperature” for how much warmer, so no 32 is added.
- File sizes
- Drive makers count 1,000 to the next unit and Windows counts 1,024, so both are given.
Keep going
Guides
- Exact unit conversions: where the factors come from
- How to convert kg to lbs, with pounds and ounces
- How to convert cm to inches, and inches to cm
- mm to inches as a fraction: a conversion chart method
- Celsius to Fahrenheit formula, with examples
- How to convert km to miles, and miles to km
- How to convert meters to feet and inches
- Height converter: feet and inches to cm, and cm to feet