๐ Unit Converters
Length, weight, area, temperature and speed. Every converter shows the formula and a quick reference table.
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Unit Converter
Free unit converter: convert length, weight, area, volume, temperature, speed and data size into every unit at once โ inches, lbs, ยฐF, gallons, mph, GB and more.
โLength Converter
Convert length between cm, mm, meters, km, inches, feet, yards, miles and nautical miles instantly, with a common length conversion chart and height in feet and inches.
โWeight Converter
Convert weight between kilograms, pounds, ounces, grams, stone, tons and carats instantly, with a common weight conversion chart, formulas and quick mental-math tips.
โTemperature Converter
Convert between Celsius, Fahrenheit and Kelvin instantly. Includes the formulas, a common temperature chart for weather, body and oven temperatures, and mental-math tricks.
โArea Converter
Convert area between square feet, square meters, acres, hectares, square miles, square yards and the Korean pyeong instantly, with a common area conversion chart.
โSpeed Converter
Convert speed between miles per hour, kilometers per hour, meters per second, knots, feet per second and Mach instantly, with a chart of common speed limits and speeds.
โPyeong to Square Meters (mยฒ) Converter
Convert pyeong (ํ), the Korean apartment size unit, to square meters and square feet. 1 pyeong = 3.3058 mยฒ. Includes 25- and 34-pyeong apartment sizes explained.
โSquare Meters (mยฒ) to Pyeong Converter
Convert square meters (mยฒ) to pyeong, the size unit used for Korean apartments. See how many pyeong 59 mยฒ and 84 mยฒ are and the usual size label for each listing.
โkg to lbs Converter
Convert kilograms to pounds instantly: 1 kg = 2.20462 lbs. Includes a kg to lbs chart for body weight, pounds and ounces, luggage limits, gym plates and a mental-math trick.
โlbs to kg Converter
Convert pounds to kilograms instantly: 1 lb = 0.4536 kg. Includes a lbs to kg chart, gym plate weights, recipe amounts, baby weights in lb and oz, and a quick mental-math trick.
โcm to Inches Converter
Convert centimeters to inches instantly: 1 cm = 0.3937 inches. Includes a cm to inches chart, height in feet and inches, waist sizes and fractional inches to 1/8.
โInches to cm Converter
Convert inches to centimeters instantly: 1 inch = 2.54 cm. Includes an inches to cm chart, fractions of an inch, and the real width and height of TV and monitor sizes.
โCelsius to Fahrenheit Converter
Convert Celsius to Fahrenheit instantly with the formula ยฐF = ยฐC ร 9/5 + 32. Includes a ยฐC to ยฐF chart for weather, body temperature and oven settings, plus a mental-math trick.
โFahrenheit to Celsius Converter
Convert Fahrenheit to Celsius instantly with ยฐC = (ยฐF โ 32) ร 5/9. Includes a ยฐF to ยฐC chart for weather, oven temperatures like 350 ยฐF, body temperature and fridge settings.
โMost-used conversions
cmโinch and kgโlb for shopping and travel, CelsiusโFahrenheit for weather and cooking, and area units including the Korean pyeong (ํ) for housing. Each converter shows the formula and a table of common values.
Accuracy
Conversions use official definitions (for example 1 lb = 0.45359237 kg and 1 pyeong = 400/121 mยฒ). The last displayed digit is rounded.