Data lookups

Measurement conversions

Length, weight, volume, pressure and temperature conversions.

All lookups

53 entries.

CategoryFromToMultiply byQuick check
Length Inches Centimetres 2.54 1 in = 2.54 cm exactly
Length Centimetres Inches 0.393701 10 cm ≈ 3.94 in
Length Feet Metres 0.3048 1 ft = 30.48 cm
Length Metres Feet 3.28084 1 m ≈ 3 ft 3 in
Length Yards Metres 0.9144 1 yd ≈ 0.91 m
Length Miles Kilometres 1.609344 1 mile ≈ 1.61 km
Length Kilometres Miles 0.621371 100 km ≈ 62 miles
Length Nautical miles Kilometres 1.852 Used at sea and in aviation
Length Millimetres Inches 0.0393701 25.4 mm = 1 in
Weight Ounces Grams 28.3495 1 oz ≈ 28 g
Weight Grams Ounces 0.035274 100 g ≈ 3.5 oz
Weight Pounds Kilograms 0.453592 1 lb ≈ 0.45 kg
Weight Kilograms Pounds 2.204623 1 kg ≈ 2.2 lb
Weight Stone Kilograms 6.35029 1 stone = 14 lb
Weight Tonnes (metric) Kilograms 1000 1 t = 1000 kg
Weight US tons Kilograms 907.185 Short ton = 2000 lb
Volume UK pints Litres 0.568261 1 UK pint ≈ 568 ml
Volume US pints Litres 0.473176 US pints are smaller than UK
Volume Litres UK pints 1.759754 1 litre ≈ 1.76 UK pints
Volume UK gallons Litres 4.54609 1 UK gallon ≈ 4.55 L
Volume US gallons Litres 3.785412 1 US gallon ≈ 3.79 L
Volume Fluid ounces (UK) Millilitres 28.4131
Volume Fluid ounces (US) Millilitres 29.5735
Volume Cups (US) Millilitres 236.588 UK recipes usually use grams
Volume Tablespoons (UK/metric) Millilitres 15 US tbsp ≈ 14.8 ml
Volume Teaspoons Millilitres 5
Area Square feet Square metres 0.092903 1 m² ≈ 10.76 ft²
Area Square metres Square feet 10.7639
Area Acres Hectares 0.404686 1 hectare ≈ 2.47 acres
Area Square miles Square kilometres 2.589988
Pressure PSI Bar 0.0689476 1 bar ≈ 14.5 psi
Pressure Bar PSI 14.5038 Car tyres: 2.2 bar ≈ 32 psi
Pressure PSI kPa 6.89476
Pressure Bar kPa 100 1 bar = 100 kPa
Pressure Atmospheres Bar 1.01325
Pressure mmHg kPa 0.133322 Blood pressure and barometers
Speed MPH KPH 1.609344 70 mph ≈ 113 kph
Speed KPH MPH 0.621371 100 kph ≈ 62 mph
Speed Knots KPH 1.852
Speed Metres/second MPH 2.236936
Energy Calories (kcal) Kilojoules 4.184 100 kcal ≈ 418 kJ
Energy kWh Megajoules 3.6
Energy BTU Kilojoules 1.05506 Heating and air conditioning
Power Horsepower (metric) Kilowatts 0.7355 100 PS ≈ 74 kW
Power Horsepower (mechanical) Kilowatts 0.745699
Data Kilobytes (KiB) Bytes 1024 Binary prefix
Data Megabytes (MiB) Bytes 1048576
Data Gigabytes (GB, decimal) Bytes 1000000000 How drive makers count
Data Megabits/second Megabytes/second 0.125 8 Mbps = 1 MB/s
Temperature Celsius Fahrenheit (°C × 9/5) + 32 20 °C = 68 °F
Temperature Fahrenheit Celsius (°F − 32) × 5/9 100 °F ≈ 37.8 °C
Temperature Celsius Kelvin °C + 273.15 0 °C = 273.15 K
Temperature Gas mark Celsius Gas 4 = 180 °C Each mark ≈ 14 °C apart
Multiply the "from" value by the factor to get the "to" value. Temperature needs a formula rather than a factor.