Home Profile Market Place Sweeteners Lab Methods Glossary Search
Master Index Environment Application Starch Statistics Tables Write us

International Starch Institute
Science Park Aarhus, Denmark
Conversion Table

| SI-units | UnitConversion | SteamTable | StarchViscosity | SieveComparison | TableIndex |
| Length | Area | Mass | Volume | Temperature | Pressure | Energy |

Length
US/imp >> Metric Metric >> US/imp
1 Inch (US) 25.40005 mm 1 mm 0.03937 in (US)
1 Inch (imp) 25.39996 mm 1 mm 0.03937 in (imp)
1 Foot (US) 0.3048006 m 1 m 3.28083 ft (US)
1 Foot (imp) 0.3047995 m 1 m 3.28083 ft (imp)
1 Yard (US) 0.9144018 m 1 m 1.093611 yd (US)
1 Yard (imp) 0.9143984 m 1 m 1.093611 yd (imp)
1 Mile (US) 1.609347 km 1 km 0.6213699 mi (US)
1 Mile (imp) 1.609341 km 1 km 0.6213724 mi (imp)
1 Nautical mile (imp) 1.853181 km 1 km 0.5396127 n.mi (imp)
Area
US/imp >> Metric Metric >> US/imp
1 Acre (US) 0.4046873 ha 1 ha 2.471044 acre (US)
1 Acre (imp) 0.4046842 ha 1 ha 2.4711 acre (imp)
1 Square inch (US) 6.451626 cm2 1 cm2 0.1549997 sq. in (US)
1 Square inch (imp) 6.451578 cm2 1 cm2 0.1550 sq.in (imp)
1 Square foot (US) 0.09290341 m2 1 m2 10.76387 sq.ft (US)
1 Square foot (imp) 0.09290272 m2 1 m2 10.7639 sq.ft (imp)
1 Square yard (US) 0.8361307 m2 1 m2 1.195985 sq.yd (US)
1 Square yard (imp) 0.8361245 m2 1 m2 1.1960 sq.yd (imp)
1 Square mile (US) 2.589998 km2 1 km2 0.3861006 sq.mi (US)
1 Square mile (imp) 2.589979 km2 1 km2 0.3861 sq.mi (imp)
Volume
US/imp >> Metric Metric >> US/imp
1 Cubic inch (US) 16.38670 ml 1 ml 0.06102509 cu.in (US)
1 Cubic inch (imp) 16.38698 ml 1 ml 0.0610241 cu.in (imp)
1 Cubic foot (US) 28.31702 l 1 l 0.03531544 cu.ft (US)
1 Cubic foot (imp) 28.31670 l 1 l 0.0353148 cu.ft (imp)
1 Cubic yard (US) 0.7645594 m3 1 m3 1.307943 cu.yd (US)
1 Cubic yard (imp) 0.7645509 m3 1 m3 1.307957 cu.yd (imp)
1 Bushel (US) 35.23829 l 1 l 0.0283782 bu (US)
1 Bushel (imp) 36.36770 l 1 l 0.02749692 bu (imp)
1 Gallon (US) 3.785329 l 1 l 0.2641779 gal (US)
1 Gallon (imp) 4.545963 l 1 l 0.2199754 gal (imp)
1 Liquid pint (US) 0.2731661 l 1 l 2.113423 liq.pt (US)
1 Pint (imp) 0.5682454 l 1 l 1.759803 pt (imp)
Mass
US/imp >> Metric Metric >> US/imp
1Grain (US) 64.79892 mg 1 mg 0.01543236 gr (US)
1Grain (imp) 64.79892 mg 1 mg 0.01543236 gr (imp)
1Ounce (US) 28.34953 g 1 g 0.03527396 oz av. (US)
1Ounce (imp) 28.34953 g 1 g 0.03527396 oz av. (imp)
1Pound (US) 0.4535924 kg 1 kg 2.204622 lb av. (US)
1Pound (imp) 0.4535924 kg 1 kg 2.204622 lb av. (imp)
1Short hundredweight (US) 45.35924 kg 1 kg 0.02204622 sh.cwt (US)
1Cental (imp) 45.35924 kg 1 kg 0.02204622 ctl (imp)
1Long ton (US) 1.016047 t 1 t 0.9842064 l.tn (US)
1Ton (imp) 1.016047 t 1 t 0.9842064 tn (imp)
Pressure
>>>> >>>>
1Pound force per square inch 68.94758 mb 1 mb 0.01450377 lb in-2
1 mb 100 Nm-2 1 Nm-2 0.01 mb
Energy
>>>> >>>>
1 British thermal unit (BTU) 0.25225 kcal15 1 kcal15 3.9643 BTUmean
1 cal15 4.1855 J 1 J 0.23892 cal15
1 MJ 0.27 kWh 1 kWh 3.6 MJ
1 Horsepower 0.7354988 kW 1 kW 1.359622 HP
Heat Capacity
>>>> >>>>
1 BTU/lb oF 1.00065 cal/g oC 1cal/g oC 0.99935 BTU/lb oF
1 BTU/lb oF 4186.8 J/kg*K(Kelvin) 1 J/g*K 0.2388 BTU/lb oF
Miscellaneous
>>>> >>>>
1 Grain per gallon US 17.118424 ppm 1 ppm 0.05841659 gr/gal
1 Pounds per gallon US 11.9828968 % 1 % 0.083452274 lb/gal
1 Pound per square inch US 0.070306685 kg/cm2 1 kg/cm2 14.22337 lb/in2
Temperature
Kelvin Celcius Fahrenheit Reaumur
273.15 0 32 0
283.15 10 50 8
293.15 20 68 16
303.15 30 86 24
313.15 40 104 32
323.15 50 122 40
333.15 60 140 48
343.15 70 158 56
353.15 80 176 64
363.15 90 194 72
373.15 100 212 80

International System of Base Units (The seven base units):

Time

The second is the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom.

Mass

The kilogram is defined as a mass equal to that of the International Prototype Kilogram - a platinum-iridium cylinder which in 1889  replaced the previous platinum protype matching the mass of 1 cubic decimetre of pure water at the temperature of its maximum density (4.0° C/39.2° F)).

Length

The metre was 1960 redefined as 1,650,763.73 wavelengths of the reddish-orange light emitted by the isotope krypton-86. The metre was again redefined in 1983 as the length of the path travelled by light in a vacuum during a time interval of 1/299,792,458 of a second.

Temperature

Since 1960 the temperature scale is based on the triple point of water. The triple point of a substance is the temperature and pressure at which its solid, liquid, and gas forms are in equilibrium. The temperature of 273.16 K (kelvins) was assigned to this point. The freezing point of water was designated as 273.15 K, equalling exactly 0° on the Celsius temperature scale. The Celsius scale has been redefined in terms of Kelvin temperatures, so that now absolute zero, 0 K, is at -273.15° C. As a consequence the freezing and boiling points of water are at present determined as 0° C and 99.974° C respectively.

Ampere

The ampere was defined as the constant electric current that, flowing in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed one metre apart in a vacuum, would produce between these conductors a force equal to 2 × 10-7 newton per metre of length.

Mole

In 1971 the mole was defined as the amount of substance of a system that contains as many elementary entities—which may be molecules, atoms, ions, and so on—as there are atoms in 0.012 kilogram of carbon-12. This number, known as Avogadro’s Number, is about 6.022 × 1023.

Light

In 1979 the candela was redefined as the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 × 1012 hertz (cycles per second) and that has a radiant intensity of (1/638) watt per steradian.

International System of Supplementary Units (Two supplementary units):

Radian

The radian is the plane angle between two radii of a circle that cut off on the circumference an arc equal in length to the radius.

Steradian

The steradian is the solid angle that, having its vertex at the centre of a sphere, cuts off an area of the surface of the sphere equal to that of a square with sides of length equal to the radius of the sphere. The radian and the steradian are classed as derived units.

Derived Units (Nine common units derived from SI base units)

Area square

meter

m2

Volume

cubic meter

m3

Velocity

meter per second

m/s

Acceleration

meter per second squared

m/s2

Density

kilogram per cubic meter

kg/m3

Current density

ampere per square meter

A/m2

Magnetic field strength

ampere per meter

A/m

Specific volume

cubic meter per kilogram

m3/kg

Luminance

candela per square meter

cd/m2

Derived Units assigned special names (Units derived from SI base and supplementary units):

Frequency

hertz

Hz

1/s

Force

newton

N

kg·m/s2

Pressure/stress

pascal

Pa

N/m2

Energy/work/quantity of heat

joule

J

N·m

Power

watt

W

J/s

Quantity of electricity

coulomb

C

A·s

Electric potential

volt

V

W/A

Capacitance

farad

F

G/V

Electric resistance

ohm

W

V/A

Conductance

siemens

S

A/V

Magnetic flux

weber

Wb

V·s

Magnetic flux density

tesla

T

Wb/m2

Inductance

henry

H

Wb/A

Luminous flux

lumen

lm

cd·sr

Illuminance

lux

lx

lm/m2

Activity of radionuclides

becquerel

Bq

1/s

Absorbed dose

gray

Gy

J/kg

Dose equivalent

sievert

Sv

J/kg

| Top of Page | SI-units |UnitConversion | SteamTable | StarchViscosity | SieveComparison | TableIndex |
| Length | Area | Mass | Volume | Temperature | Pressure | Energy |

Copyright© 1999. Read Disclaimer notice.
All rights reserved. International Starch Institute, Science Park Aarhus, Denmark.

Keywords: conversion metric SI imperial unit temperature pressure volume length heat energy mass area