Metric đến Imperial Conversions Chart (Miễn phí Converter)

The conversions people need most là: 1 inch = 2.54 cm exactly, 1 kg ≈ 2.205 lb, 1 mile ≈ 1.609 km, 1 US gallon ≈ 3.785 litres, và °F = °C × 9/5 + 32. The chart below lists rest, với quick rules cho doing them in của bạn head. For an exact answer, type value into free unit converter, which uses official defined factors cho length, weight, temperature, volume, area, speed, time và data size.

Most of world uses metric system. The US uses US customary units cho everyday life, và UK still uses miles, pints và stones alongside metric. So recipes, height và weight, road signs và product labels often need converting.

Length

From	To	Multiply by	Example
Centimetres	Inches	÷ 2.54	180 cm = 70.87 in
Inches	Centimetres	× 2.54	12 in = 30.48 cm
Metres	Feet	× 3.2808	2 m = 6.56 ft
Feet	Metres	× 0.3048	6 ft = 1.83 m
Metres	Yards	× 1.0936	100 m = 109.36 yd
Kilometres	Miles	× 0.62137	10 km = 6.21 mi
Miles	Kilometres	× 1.609344	26.2 mi = 42.16 km

The inch, foot, yard và mile là all defined exactly in metres (1 inch = 25.4 mm), so these conversions là exact, not estimates.

Height in feet và inches: converter takes one unit at a time, so convert đến inches first. 5 ft 10 in là 5 × 12 + 10 = 70 inches, và 70 inches là 177.8 cm. Going other way, 180 cm là 70.87 inches, which là 5 feet (60 inches) với 10.87 inches left, so about 5 ft 11 in. A full chart là in height in feet and inches to cm.

Weight (mass)

From	To	Multiply by	Example
Kilograms	Pounds	× 2.20462	70 kg = 154.32 lb
Pounds	Kilograms	× 0.45359237	150 lb = 68.04 kg
Grams	Ounces	÷ 28.3495	100 g = 3.53 oz
Ounces	Grams	× 28.3495	8 oz = 226.8 g
Kilograms	Stone	÷ 6.35029	70 kg = 11.02 st

The UK often gives body weight in stone và pounds (1 stone = 14 lb). 70 kg là about 11 stone 0.3 lb, hoặc 11 st 0 lb in everyday terms. For body weight và BMI, there's also a guide on calculating your BMI in metric hoặc imperial.

Tons là a trap: a US ton là 2,000 lb (907.18 kg), a UK ton là 2,240 lb (1,016.05 kg), và a metric tonne là 1,000 kg. The converter lists all three.

Temperature

Temperature uses a formula, not a single factor:

• °C đến °F: multiply by 9/5 (1.8), then add 32.
• °F đến °C: subtract 32, then multiply by 5/9.

Celsius	Fahrenheit	Điều gì it là
−40 °C	−40 °F	Where two scales meet
0 °C	32 °F	Water freezes
20 °C	68 °F	Room temperature
25 °C	77 °F	A warm day
37 °C	98.6 °F	Typical body temperature
100 °C	212 °F	Water boils at sea level
180 °C	356 °F	Common oven setting

Quick mental rule: double Celsius và add 30. 20 °C gives 70 °F ( exact answer là 68). It's close enough cho weather, not cho cooking hoặc medicine.

Volume

From	To	Multiply by	Example
Litres	US gallons	× 0.264172	50 L = 13.21 US gal
US gallons	Litres	× 3.785411784	1 US gal = 3.785 L
UK gallons	Litres	× 4.54609	1 UK gal = 4.546 L
US cups	Millilitres	× 236.588	1 cup = 236.6 ml
US tablespoons	Millilitres	× 14.787	1 tbsp = 14.8 ml
US teaspoons	Millilitres	× 4.929	1 tsp = 4.9 ml
US fluid ounces	Millilitres	× 29.574	12 fl oz = 354.9 ml
UK pints	Millilitres	× 568.26	1 pint = 568 ml

US và UK units share names but not sizes. A UK (imperial) gallon là about 20% bigger than a US gallon, và a UK pint là 568 ml against 473 ml cho a US pint. The converter lists US và UK versions separately, so pick one của bạn recipe hoặc label uses.

Area và speed

From	To	Multiply by	Example
Square metres	Square feet	× 10.7639	50 m² = 538.2 ft²
Square feet	Square metres	× 0.092903	1,000 ft² = 92.9 m²
Hectares	Acres	× 2.47105	2 ha = 4.94 acres
Acres	Square metres	× 4,046.86	1 acre = 4,046.9 m²
km/h	mph	× 0.62137	100 km/h = 62.1 mph
mph	km/h	× 1.609344	60 mph = 96.6 km/h

Flat và house sizes in India là usually quoted in square feet, while plans và much of world use square metres, so area conversion comes up a lot khi comparing property.

Data size: MB vs MiB

The converter also handles data. A megabyte (MB) là 1,000,000 bytes, và a mebibyte (MiB) là 1,048,576 bytes. That's why a 500 GB drive shows up as about 465.66 GiB on some computers: nothing là missing, units là different. The full story là in KB vs KiB and MB vs MiB.

Using converter

Mở free unit converter:

1. Pick what bạn're converting: Length, Weight, Temperature, Volume, Area, Speed, Thời gian hoặc Data size.
2. Type a số in Value. Decimals và grouped numbers like 1,250 work.
3. Chọn From và To units. Press Swap đến flip them.
4. Read result và press Copy result.

Results update as bạn type và là shown đến up đến 10 decimal places, so bạn có thể round them as much as của bạn task needs.

Convert yours now

Pick a category, type a value và get an exact answer in a second. The free unit converter runs on của bạn device, với no sign-up.