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Physics LibreTexts

66.14: Unit Conversion Tables

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Time

1 day = 24 hours = 1440 minutes = 86400 seconds

1 hour = 60 minutes = 3600 seconds

1 year = 31557600 seconds π×107 seconds

Length

1 mile = 8 furlongs = 80 chains = 320 rods = 1760 yards = 5280 feet = 1.609344 km

1 yard = 3 feet = 36 inches = 0.9144 meter

1 foot = 12 inches = 0.3048 meter

1 inch = 2.54 cm

1 nautical mile = 1852 meters = 1.15077944802354 miles

1 fathom = 6 feet

1 parsec = 3.26156376188 light-years = 206264.806245 AU = 3.08567756703 ×1016 meters

1 ångström = 0.1 nm = 105 fermi = 1010 meter

Mass

1 kilogram = 2.20462262184878 lb

1 pound = 16 oz = 0.45359237 kg

1 slug = 32.1740485564304 lb = 14.5939029372064 kg

1 short ton = 2000 lb

1 long ton = 2240 lb

1 metric ton = 1000 kg

Velocity

15 mph = 22 fps

1 mph = 0.44704 m/s

1 knot = 1.15077944802354 mph = 0.514444444444444 m/s

Area

1 acre = 43560 ft2 = 4840 yd2 = 4046.8564224 m2

1 mile2 = 640 acres = 2.589988110336 km2

1 are = 100 \m2

1 hectare = 104 m2 = 2.47105381467165 acres

Volume

1 liter = 1 dm3 = 103 ~m3 1 quart

1 m3 = 1000 liters

1 cm3 = 1 mL}

1 ft3 = 1728 in3 = 7.48051948051948 gal = 28.316846592 liters

1 gallon = 231 in3 = 4 quarts = 8 pints = 16 cups = 3.785411784 liters

1 cup = 8 fl oz = 16 tablespoons = 48 teaspoons

1 tablespoon = 3 teaspoons = 4 fluidrams

1 dry gallon = 268.8025 in3 = 4.40488377086 liters

1 imperial gallon = 4.54609 liters

1 bushel = 4 pecks = 8 dry gallons

Density

1 g}/cm3 = 1000 kg/m3 = 8.34540445201933 lb/gal = 1.043175556502416 lb/pint

Force

1 lb f = 4.44822161526050 newtons = 32.1740485564304 poundals

1 newton = 105 dynes

Energy

1 calorie = 4.1868 joules

1 BTU = 1055.05585262 joules

1 ft-lb = 1.35581794833140 joules

1 kW-hr = 3.6 MJ

1 eV = 1.602176634 × 10-19} joules

1 joule = 107 ergs

Power

1 horsepower = 745.69987158227022 watts

1 statwatt = 1 abwatt = 1 erg/s = 10-7 watt

Angle

rad = deg ×π180 deg = rad ×180π

1 \mathrm{deg} = 60 \operatorname{arcmin} = 3600 \operatorname{arcsec}

Temperature

C = F -32 ×59

F=(C×95)+32

K = C+273.15

R=F+459.67

Pressure

1 atm = 101325 Pa = 1.01325 bar = 1013.25 millibar = 760 torr

= 760 mmHg = 29.9212598425197 inHg = 14.6959487755134 psi

= 2116.21662367394 lb/ft2 = 1.05810831183697 ton/ft2 = 1013250 dyne/cm2 = 1013250 barye

Electromagnetism

1 statcoulomb = 3.335640951981520 × 10-10 coulomb

1 abcoulomb = 10 coulombs

1 statvolt = 299.792458 volts

1 abvolt = 10-8} volt

1 maxwell = 10-8} weber

1 gauss = 10-4 tesla

1 oersted = 250 / π ( = 79.5774715459477) A/m

clipboard_e11dee387055364e0a0888600461b40a1.png
Figure 66.14.1: Conversion chart for kitchen measurements. (Credit: S.B. Lattin Design.)

66.14: Unit Conversion Tables is shared under a CC BY-NC-SA 4.0 license and was authored, remixed, and/or curated by LibreTexts.

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