Conversions

Acceleration

foot/second², meter/second², gal, galileo, inch/second²

• 1 m/s² = 3.28084 ft/s² = 100 cm/s² = 39.37 inch per second squared (inch/s²)
• 1 ft/s² = 0.3048 m/s² = 30.48 cm/s²
• 1 g = 9.80665 m/s² = 32.17405 ft/s²

Area

acre, are, barn, sq.ft., sq.in., foot², hectare, inch², mile², section, meter², township, yard²,
hectares

• 1 m² = 1550 in² = 10.764 ft² = 1.1968 yd² = 3.861x10^-7 mile²
• 1 ft² = 0.0929 m² = 144 in² = 0.1111 yd² = 3.587x10^-8 mile²
• 1 in² = 6.452 cm² = 6.452x10^-4 m² = 6.944x10^-3 ft² = 7.716x10^-4 yd² = 2.491x10^-10 mile²
• 1 yd² = 0.8361 m² = 1,296 in² = 9 ft² = 0.3228x10^-6 mile²
• 1 mile² = 2.590x10⁶ m² = 0.4015x10¹⁰ in² = 2.788x10⁷ ft² = 3.098x10⁶ yd²=640 Acres
• 1 acre = 1/640 mile² = 0.404686 ha (Hectares) = 4,046.86 m² =43,560 Sq.Ft. = 4840 Sq.Yds.
• 1 km² = 10² ha² = 10⁶ m² = 10¹⁰ cm² = 10¹² mm²
• 1 ha (Hectare) = 10⁴ m² = 10⁸ cm² = 10¹⁰ mm² = 2.471 Acres
• 1 cm² = 10^-4 m² = 0.155 in²
• 1 mm² = 1.55x10^-3in²
• 1 township = 9.323957 10⁷ m²
• 1 section = 2.589 10⁶ m²

Density

kg/cubic meter, gram/centimeter³, l_mb/cubic inch, lb_m/cubic foot, slug/cubic foot, kilogram/cubic meter, lbm/gallon (US
liq)

• Density Water 1,000 kg/m³ = 62.43 Lbs./Cu.Ft = 8.33 Lbs./Gal. = 0.1337 Cu.Ft./Gal.
• 1 lb/ft³ = 16.018 kg/m³ = 0.016 g/cm³ = 0.00926 oz/in³ = 2.57 oz/gal (Imperial) = 2.139 oz/gal (U.S.) = 0.0005787 lb/in³ = 27 lb/yd³ = 0.161 lb/gal (Imperial) = 0.134 lb/gal (U.S) = 0.0121 ton/yd³
• 1 slug/ft³ = 515.379 kg/m³
• 1 kg/l = 62.43 lb/ft³
• 1 kg/m³ = 0.001 g/cm³ = 0.0005780 oz/in³ = 0.16036 oz/gal (Imperial) = 0.1335 oz/gal (U.S.) = 0.0624 lb/ft³ = 0.000036127 lb/in³ = 1.6856 lb/yd³ = 0.010022 lb/gal (Imperial) = 0.008345 lb/gal (U.S) = 0.0007525 ton/yd³

Energy

British Thermal Unit (Btu), calorie, joule, kilojoule, electron volt, erg, foot lb_f, foot poundal, kilocalorie, kilowatt hour, watt hour,

• 1 J (Joule) = 0,1020 kpm = 2.778x10^-7 kWh = 2.389x10^-4 kcal = 0.7376 ft lb_f = 1 (kg m²)/s² = 1 watt second = 1 Nm = 1 ft lb = 9.478x10^-4 Btu
• 1 kpm = 9.80665 J = 2.724x10^-6 kWh = 2.342x10^-3 kcal = 7.233 ft lb_f = 9.295x10^-3 Btu
• 1 kWh = 3.6x10⁶ J = 3.671x10⁵ kpm = 859.9 kcal = 2.656x10⁶ ft lb_f = 3.412x10³ Btu
• 1 kJ = 1 kNm = 1kWs = 10³ J = 0.947813 Btu = 737.6 ft lb_f = 0.23884 kcal
• 1 Btu (British thermal unit) = 1,055.06 J = 107.6 kpm = 2.931x10^-4 kWh = 0.252 kcal = 778.16 ft lb_f = 1.055x10¹⁰ ergs = 252 cal = 0.293 watt hour
• 1 cal = 4.186 J
• 1 kcal = 4186,8 J = 426,9 kp m = 1.163x10^-3 kWh = 3.088 ft lb_f = 3.9683 Btu = 1,000 cal
• 1 ft lb_f (foot pound force) = 1.3558 J = 0.1383 kp m = 3.766x10^-7 kWh = 3.238x10^-4 kcal = 1.285x10^-3
  Btu
• 1 hp h (horse power hour) = 2.6846x10⁶ J = 0.7457 kWh
• 1 erg = 1 (g cm²)/s² = 10^-7 J
• 1 eV = 1.602x10^-19 J
• 1 Q = 10¹⁸ Btu = 1.055x10²¹ J
• 1 Quad = 10¹⁵ Btu
• 1 kg m = 7.233 ft lb = 0.00929 Btu = 9.806 Joule

Energy per unit mass

• 1 kJ/kg = 1 J/g = 0.4299 Btu/ lb_m = 0.23884 kcal/kg

Force

dyne, kilogram force (kgf), kilopound force, kip, lbf (pound force), ounce force (avoirdupois), poundal, newton

• 1 N (Newton) = 0.1020 kp = 7.233 pdl = 7.233/32.174 lb_f = 0.2248 lb_f = 1 (kg m)/s² = 10⁵ dyn = 1/9.80665 kg_f
• 1 lb_f (Pound force) = 4.44822 N = 0.4536 kp = 32.17 pdl = 4.448x10⁵ dyn
• 1 dyn = 1 (g cm)/s²
• 1 kg has a weight of 1 kp
• 1 kp (Kilopond) = 9.80665 N = 2.205 lb_f = 70.93 pdl
• 1 pdl (Poundal) = 0.13826 N = 0.01409 kp = 0.03108 lb_f

Heat flow rate

• 1 Btu/sec = 1,055.1 W
• 1 kW (kJ/s) = 102.0 kpm/s = 859.9 kcal/h = 3,413 Btu/h = 1.360 hk = 1.341 hp = 738 ft lb/s = 1,000 J/s = 3.6x10⁶ J/h
• 1 kpm/s = 9.8067x10^-3 kW = 8.432 kcal/h = 32.47 Btu/h = 0.01333 hk = 0.01316 hp = 7.237 ft lb/s
• 1 kcal/h = 1.163x10^-3 kW = 0.1186 kpm/s = 3.969 Btu/h = 1.582x10^-3 hk = 1.560x10^-3 hp = 0.8583 ft lb/s
• 1 Btu/h = 2.931x10^-4 kW = 0.0299 kpm/s = 0.252 kcal/h = 3.986x10^-4 hk = 3.939x10^-4 hp = 0.2163 ft lb/s
• 1 kcal/h = 1.16x10^-3 kW
• 1 hk (metric horse power) = 0.735499 kW = 75.00 kpm/s = 632.5 kcal/h = 2,510 Btu/h = 0.9863 hp = 542.8 ft lb/s
• 1 hp = 0.74570 kW = 76.04 kpm/s = 641.2 kcal/h = 2,545 Btu/h = 1.014 hk = 550.3 ft lb/s
• 1 ft lb/s = 1.35501 kW = 0.1382 kpm/s = 1.165 kcal/h = 4.625 Btu/h = 1.843x10^-3 hk = 1.817x10^-3 hp

Heat flux

• 1 Btu/ft² = 2.713 kcal/m² = 2.043x10⁴ J/m²K
• 1 Btu/ ft² h = 3.1525 W/m²
• 1 Btu/ft^{2 o}F = 4.88 kcal/m²K = 2.043x10⁴ J/m²K
• 1 kcal/m² = 0.369 Btu/ft²
• 1 kcal/m²K = 0.205 Btu/ft^2oF

Heat generation per unit volume

• 1 Btu/ft³ = 8.9 kcal/m³ = 3.73x10⁴ J/m³
• 1 Btu/ft³ h = 10.343 W/m³
• 1 kcal/m³ = 0.112 Btu/ft³

Heat generation per unit mass

• 1 Btu/lb = 0.556 kcal/kg = 2,326 J/kg
• 1 kcal/kg = 1.800 Btu/lb

Heat transfer coefficient

• 1 Btu/ft² h ^oF = 5.678 W/m² K = 4.882 kcal/h m^{2 o}C
• 1 W/m²K = 0.85984 kcal/h m^{2 o}C = 0.1761 Btu/ ft² h ^oF
• 1 kcal/h m^{2 o}C = 1.163 W/m²K = 0.205 Btu/ft² h ^oF

Hydraulic Gradients

• 1 ftH₂O/100 ft = 0.44 psi/100 ft = 9.8 kPa/100 m = 1000 mmH₂O/100 m
• 1 psi/100 ft = 2.3 ftH₂O/100 ft = 2288 mmH₂O/100 ft = 22.46 kPa/100 m

Length

feet, meters, centimeters, kilometers, miles, furlongs, yards, micrometers, inches,angstrom, cubit, fathom, foot, hand, league, light year, micron, mil,
nautical mile, rod,

• 1 m (meter) = 3.2808 ft = 39.37 in = 1.0936 yd = 6.214x10^-4 mile
• 1 km = 0.6214 mile = 3281 ft = 1094 yds
• 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft = 0.02778 yd = 1.578x10^-5 mile
• 1 ft (foot) = 0.3048 m = 12 in = 0.3333 yd = 1.894x10^-4 mile = 30.48 cm = 304.8 mm
• 1 mm = 10^-3 m
• 1 cm = 10^-2 m = 0.3937 in = 0.0328 ft
• 1 mm = 0.03937 in
• 1 Ã… (Ã…ngström) = 10^-10 m
• 1 mile = 1.6093 km = 1,609.3 m = 63,346 in = 5,280 ft = 1,760 yd
• 1 mil (Norway and Sweden) = 10 kilometres
• 1 nm (nautical mile) = 1,852 metres = 1.151 mile = 6076.1 feet
• 1 yd (yard) = 0.9144 m = 36 in = 3 ft = 5.682x10^-4 mile
• 1 Furlong = 660 feet = 40 rods = 1/8 mile
• 1 rod = 5.5 yards
• 1 land league = 3 miles
• 1 Fathom = 6 feet = 1.828804 meters

Mass, weight

pounds, kilograms, grams, ounces, grains, tons (long), tons (short), tons (metric), carat, grain, ounce mass, pound mass (lb_m), slug, tonne

• 1 kg = 1,000 g = 2.2046 lb = 6.8521x10^-2 slug
• 1 lb = 16 oz = 0.4536 kg = 453.6 g = 7000 grains = 0.03108 slug
• 1 slug = 14.594 kg = 32.174 lb_m
• 1 grain = 0.000143 lb = 0.0648 g
• 1 g = 15.43 grains = 0.0353 oz = 0.002205 lb
• 1 tonne = 10³ kg = 10⁶ g = 10⁹ mg = 0.984 tons
• 1 qt = 0.9464 liters
• 1 Ton = 2000 Lbs. = 907 kg
• 1 long ton = 2240 pounds
• 1 oz (ounce) = 28.35 g = 437.5 grains
• 1 troy pound = 12 troy ounces
• 1 scruple = 20 grains
• 1 dram = 3 scruples
• 1 apothecary ounce = 8 drams
• 1 apothecary pound = 12 apothecary ounces
• 1 pennyweight = 24 grains
• 1 Gal. H₂O = 8.33 Lbs. H₂O

Mass flow rate

• 1 lb/h = 1.26x10^-4 kg/s
• 1 lb/s = 0.4536 kg/s
• 1 lb/min = 7.56x10^-3 kg/s = 27.216 kg/s
• 1 kg/s = 3,600 kg/h = 132.28 lb/min
• 1 kg/h = 2.778x10^-4 kg/s = 3.67x10^-2 lb/min

Moment of Inertia

• 1 kg m² = 10000 kg cm² = 54675 ounce in² = 3417.2 lb in² = 23.73 lb ft²

Power

horsepower, kilowatt, watt,btu/second, calorie/second, foot lbf/second, kilocalorie/second

• 1 W = 1 kg m²/s³ = 1 Nm/s = 1 J/s
• 1 kW = 1,000 Watts = 3,412 Btu/h = 737.6/550 British hp = 1.341 British hp = 10³/9.80665 kg_f m/s = 737.6 ft lb_f/s = 10³/(9.80665 75) metric hp
• 1 hp (English horse power) = 745.7 W = 0.746 kW = 550 ft lb/s = 2,545 Btu/h = 33.000 ft lb/m = 1.0139 metric horse power ~= 1.0 KVA
• 1 metric horse power = 736 W = 75 kg m/s = 0.986 English horse power
• 1 refrigeration Ton = 12,000 Btu/h cooling = 3.516 kW = 3,025.9 k Calories/h
• 1 cooling tower Ton = 15,000 Btu/h = 3,782 k Calories/h
• 1 Therm = 100,000 Btu/h
• 1 ft lb/s = 1.3558 W
• 1 Btu/s = 1055.1 W
• 1 Btu/h = 1 Btuh = 0.293 W = 0.001 MBH

Power per unit area

• 1 W/m² = 0.3170 Btu/(h ft²) = 0.85984 kcal/(h m²)

Pressure

atmosphere, centimeters of mercury, foot of water, bar, barye, centimeter of water, dyne/centimeter², inch of mercury, inch of water,
kgf/centimeter², kgf/meter², lbf/foot², lbf/inch² (psi), millibar, millimeter of mercury, pascal, torr,
newton/meter²

• Standard Atmospheric Pressure 1 atm = 101.325 kN/m² = 101.325 kPa = 14.7 psia = 0 psig = 29.92 in Hg = 760 torr = 33.95 Ft.H₂O = 407.2 In.W.G (Water Gauge) = 2116.8 Lbs./Sq.Ft.
• 1 N/m² = 1 Pa = 1.4504x10^-4 lb/in² = 1x10^-5 bar = 4.03x10^-3 in water = 0.336x10^-3 ft water = 0.1024 mm water = 0.295x10^-3 in mercury = 7.55x10^-3 mm mercury = 0.1024 kg/m² = 0.993x10^-5 atm
• 1 Pa = 10^-6 N/mm² = 10^-5 bar = 0.1020 kp/m² = 1.02x10^-4 m H₂O = 9.869x10^-6 atm = 1.45x10^-4 psi (lbf/in²)
• 1 N/mm² = 10⁶ Pa = 10 bar = 1.020x10⁵ kp/m² = 102.0 m H₂O = 9.869 atm = 145.0 psi (lbf/in²)
• 1 mmHg = 1 torr = 0.01934 lb/in²
• 1 atm = 101,325 Pa (N/m²) = 1.013x10² kN/m² = 1.033x10⁴ kp/m² = 1.033 kp/cm² = 1.013 bar = 14.696 psi (lb/in²) = 407.1 in H₂O at 62 ⁰F (16.7 ^oC) = 33.9 ft H₂O at 62 ⁰F (16.7 ^oC) = 10.33 m H₂O at 62 ⁰F (16.7 ^oC) = 29.92 in mercury at 62 ⁰F (16.7 ^oC) = 760 mm mercury at 62 ⁰F (16.7 ^oC) = 760 torr
• 1 bar = 10⁵ Pa (N/m²) = 0.1 N/mm² = 10,197 kp/m² = 10.20 m H₂O = 0.9869 atm = 14.50 psi
  (lb_f/in²) = 10⁶ dyn/cm² = 750 mmHg
• 1 kp/m² = 9.81 Pa (N/m²) = 9.807x10^-6 N/mm² = 10^-3 m H₂O = 1 mm H₂O = 0.9681x10^-4 atm = 1.422x10^-3 psi (lb/in²) = 0.0394 in H₂O = 0.0736 mm mercury
• 1 psi (lb/in²) = 144 psf (lb_f/ft²) = 6,894.8 Pa (N/m²) = 6.895x10^-3 N/mm² = 0.895x10^-2 bar = 27.71 in H₂O at 62^oF (16.7^oC) = 703.1 mm H₂O at 62^oF (16.7^oC) = 2.0416 in mercury at 62^oF (16.7^oC) = 51.8 mm mercury at 62^oF (16.7^oC) = 703.6 kg/m² = 0.06895 atm = 2.307 Ft. H₂O = 16 ounces
• 1 psf (lb_f/ft²) = 47.88 N/m² (Pa) = 0.006944 lb_f/in² (psi)
• 1 dyn/cm² = 145.04x10^-7 lb_f/in²
• 1 in mercury (Hg) = 3,376.8 N/m²= 0.49 lb/in² = 12.8 in water
• 1 Ounce = 1.73 In.W.C.
• 1 Ft.H₂O = 0.4335 psi = 62.43 Lbs./Sq.Ft.
• 1 in water = 248.8 N/m²= 0.0361 lb/in² = 25.4 kg/m² = 0.0739 in mercury
• 1 m H₂O = 9806.7 Pa = 9.807x10^-3 N/mm² = 0.0987 bar = 1,000 kp/m² = 0.09678 atm = 1.422 psi
  (lb_f/in²)
• 1 mm water = 9.81 Pa (N/m²) = 1 kg/m² = 0.0736 mm mercury = 0.9677x10^-4 atm
• 1 mm mercury = 0.0193 lb/in² = 133 N/m² = 12.8 mm water

Rotation

revolutions,

• 1 r/min (rpm) = 0.01667 r/s = 0.105 rad/s
• 1 r/s = 60 r/min = 6.28 rad/s
• 1 rad/s = 9.55 r/min (rpm) = 0.159 r/s (rps)

Specific energy, enthalpy, entropy

• 1 Btu/lb_m = 2,326.1 J/kg = 0.55556 kcal/kg = 778.2 ft lb_f/lb_m = 3.9 10^-4 hp hr / lb_m = 5.4
  lb_f/in² / lb_m/ft³ = 0.237 kp m / g = 5.56 10^-4 kcal/g = 2.326 kJ/kg
• 1 J/kg = 4.299x10^-4 Btu/lb_m = 2.388x10^-4 kcal/kg
• 1 kcal/kg = 1.80 Btu/lb_m = 4,187 J/kg

Specific heat capacity

• 1 J/(kg K) = 2.389x10^-4 kcal/(kg ^oC) = 2.389x10^-4 Btu/(lb_m ^oF)
• 1 kJ/(kg K) = 0.2389 kcal/(kg ^oC) = 0.2389 Btu/(lb_m ^oF)
• 1 Btu/(lb_m ^oF) = 4,186.8 J/ (kg K) = 1 kcal/(kg ^oC)
• 1 kcal/(kg ^oC) = 4,186.8 J/ (kg K) = 1 Btu/(lb_m ^oF)

Specific Volume

• 1 m³/kg = 16.02 ft³/lb_m = 27680 in³/lb_m = 119.8 US gal/lb_m = 1000 liter/kg
• 1 liter/kg = 0.016 ft³/lb_m = 27.7 in³/lb_m = 0.12 US gal/lb_m = 0.001 m³/kg
• 1 ft³/lb_m = 1728 in³/lb_m = 7.48 US gal/lb_m = 62.43 liter/kg = 0.062 m³/kg
• 1 in³/lb_m = 0.00058 ft³/lb_m = 0.0043 US gal/lb_m = 0.036 liter/kg = 0.000036 m³/kg
• 1 US gal/lb_m = 0.134 ft³/lb_m = 231 in³/lb_m = 8.35 liter/kg = 0.0083 m³/kg

Temperature

celsius, rankine, kelvin, centigrade, fahrenheit,

• 1 ^oC = 1.8 ^oF
• 1 ^oF = 0.555 ^oC
• 0 ^oC corresponds to 32 ^oF, 273.16 K and 491.69 R
• T(^oR) = (9/5)T(K)
• T(^oF) = [T(^oC)](9/5) + 32
• T(^oF) = [T(K) - 273.15](9/5) + 32
• T(^oC) = 5/9[T(^oF) - 32]

Thermal conductivity

• 1 W/(m K) = 0.85984 kcal/(h m ^oC) = 0.5779 Btu/(ft h ^oF)
• 1 Btu/(ft h ^oF) = 1.731 W/(m K) = 1.488 kcal/(h m ^oC)
• 1 kcal/(h m ^oC) = 1.163 W/(m K) = 0.6720 Btu/(ft h ^oF)

Thermal diffusivity

• 1 ft² /s = 0.0929 m²/s
• 1 ft² /h = 2.581x10^-5 m²/s

Thermal resistance

• 1 (h ^oF)/Btu = 1.8958 K/W

Time

year, month, day, hour, minute, second, millisecond

• 1 h = 3,600 s = 60 min
• 1 ms (millisecond) = 10^-3 s
• 1 ?s (microsecond) = 10^-6 s
• 1 ns (nanosecond) = 10^-9 s

Torque, Moment

foot-pound torque, newton-meter

• 1 ft lb = 1.356 Nm

Velocity, speed

foot/second, inch/second, meter/second, kilometer/hour, knot, mile/hour,nautical mile per hour

• 1 ft/s = 0.3048 m/s
• 1 ft/min = 5.08x10^-3 m/s = 0.0183 km/h = 0.0114 mph
• 1 mph = 0.44703 m/s = 1.609 km/h = 88 ft/min = 5280 ft/hr = 1.467 Ft./sec. = 0.8684 knots
• 1 m/s = 3.6 km/h = 196.85 ft/min = 2.237 mph
• 1 km/h = 0.2778 m/s = 54.68 ft/min = 0.6214 mph = 0.5396 knot
• 1 knot (nautical mile per hour)= 0.514444444 m/s = 1.852 kilometers per hour = 1.1515 miles per hour= 1 nautical miles per hour
• 1 League = 3.0 Miles

Viscosity dynamic

• 1 lb/(ft s) = 1.4879 Pa s = 14.88 P = 1,488 cP = 0.1517 kp s/m²
• 1 cP (Centipoise) = 10^-3 Pa s = 0.01 P = 1.020x10^-4 kp s/m² = 6.721x10^-4 lb/(ft s) = 0.00100 (N
  s)/m²
• 1 kg/(m s ) = 1 (N s)/m² = 0.6720 lb_m/(ft s) = 10 Poise
• 1 P (Poise) = 0.1 Pa s = 100 cP = 1.020x10^-2 kp s/m² = 6.721x10^-2 lb/(ft s) = 0.1 kg/ms
• 1 Pa s (N s/m²) = 10 P (Poise) = 10³ cP = 0.1020 kp s/m² = 0.6721 lb/(ft s)
• 1 kp s/m² = 9.80665 Pa s = 98.07 P = 9,807 cP = 6.591 lb/(ft s)
• 1 reyns = 1 1b_f s/in² = 6894.76 Pa s

Viscosity kinematic

• 1 ft²/s = 0.0929 m²/s
• 1 ft²/ h = 2.581x10^-5m²/s
• 1 St (Stokes) = 1x10^-4 m²/s = 100 cSt = 1.076x10^-3 ft²/s
• 1 m²/s = 10⁴ St = 10⁶ cSt = 10.764 ft²/s= 38750 ft²/h
• 1 cSt (Centistokes) = 10^-6 m²/s = 0.01 St = 1.076x10^-5 ft²/s

Volume

barrel, gallon, cubic centimeter (cm³), cubic feet (foot³), cubic inch (inch³), cubic meter (meter³), cubic yard (yard³), quarts, liters, acre foot, board foot, bushel, cord, cup, dram, fluid ounce, peck, pint, quart, tablespoon, teaspoon,

• 1 ft³ = 0.02832 m³= 28.32 dm³ = 0.03704 yd³ = 6.229 Imp. gal (UK) = 7.481 gal (US) = 1,728 Cu.In
• 1 in³ = 1.6387x10^-5 m³ = 1.639x10^-2 dm³ (liter) = 16.39 cm³ = 16390 mm³ = 0.000579 ft³
• 1 Gallon (U.S.) = 3.785x10^-3 m³ = 3.785 dm³ (liter) = 0.13368 ft³ = 4.951x10^-3 yd³ = 0.8327 Imp. gal (UK) = 4 Quarts = 8 Pints
• 1 Imp. gal (UK) = 4.546x10^-3 m³ = 4.546 dm³ = 0.1605 ft³ = 5.946x10^-3 yd³
  = 1.201 gal (US)
• 1 dm³ (Liter) = 10^-3 m³ = 0.03532 ft³ = 1.308x10^-3 yd³ = 0.220 Imp gal (UK) =
  0.2642 Gallons (US) = 1.057 Quarts = 2.113 Pints
• 1 yd³ = 0.7646 m³ = 764.6 dm³ = 27 ft³ = 168.2 Imp. gal (UK) = 202.0 gal (US) = 46,656 Cu.In. = 1616
  Pints = 807.9 Quarts = 764.6 Liters
• 1 pint (pt) = 0.568 dm³ (liter) = 16 fl. oz. (fluid ounce) = 28.88 in³
• 1 km³ = 10⁹ m³ = 10¹² dm³ (liter) = 10¹⁵ cm³ = 10¹⁸
  mm³
• 1 cm³ = 0.061 in³
• 1 m³ = 10³ dm³ (liter) = 35.31 ft³ = 1.3093 yd³ = 220.0 Imp. gal (UK) = 264.2 gal (US)
  = 61,023 Cu.In. = 0.02832 Cu.Ft
• 1 Hogshead = 63 Gallon = 8.42184 Cu.Ft
• 1 Barrel liquid = 31.0 Gallons liquid
• 1 Barrel beer = 31.5 Gallons beer
• 1 Barrel oil (petroleum) = 42 Gallons oil
• 1 Bushel = 1.2445 Cu.Ft. = 32 Quarts (Dry) = 64 Pints (dry) = 4 Pecks
• 1 quart (qt) = 2 pints = 57.75 in³ = 1/8 dry quarts
• 1 fluid ounce (fl. oz.) = 2 tablespoons = 1.805 in³ = 29.574 milliliters
• 1 cord = 128 ft³
• 1 peck = 8 dry quarts
• 1 cup = 8 fl.oz. (fluid ounce)
• one board foot = piece of lumber 1 foot wide x 1 foot long x 1 inch thick

Volume flow

• 1 dm³/s (kg/s water) = 13.20 Imp. gal (UK)/min
• 1 m³/s = 3,600 m3/h = 1,000 dm³(liter)/s = 35.32 ft³/s = 2,118.9 ft³/min = 13,200 Imp.gal (UK)/min =
  15,852 gal (US)/min
• 1 m³/h = 2.7778x10^-4 m³/s = 0.2778 dm³(litre)/s = 9.810x10^-3 ft³/s = 0.5886
  ft³/min (cfm) = 3.667 Imp.gal (UK)/min = 4.403 gal (US)/min
• 1 m³/h = 10³ dm³(litre)/h = 16.67 dm³(litre)/min = 0.27878 dm³(litre)/s
• 1 ft³/min = 1.7 m³/h = 0.47 l/s = 62.43 Lbs.H₂O/Min.
• 1 dm³(litre)/s = 10^-3 m³/s = 3.6 m³/h = 0.03532 ft³/s = 2.1189 ft³/min (cfm) =
  13.200 Imp.gal (UK)/min = 15.852 gal (US)/min = 792 Imp. gal (UK)/h
• 1 dm³(litre)/s = 60 litre/min = 3,600 litre/h
• 1 ft³/s = 0.0283168 m³/s = 101.9 m3/h = 28.32 dm³(litre)/s = 60 ft³/min = 373.7 Imp.gal (UK)/min =
  448.9 gal (US)/min
• 1 Imp.gal (UK)/min = 7.57682x10^-5 m³/s = 0.0273 m3/h = 0.0758 dm³(litre)/s = 2.675x10^-3 ft³/s = 0.1605 ft³/min = 1,201 gal (US)/min
• 1 gal (US)/min =6.30888x10^-5 m³/s = 0.227 m³/h = 0.06309 dm³(litre)/s = 2.228x10^-3
  ft³/s = 0.1337 ft³/min = 0.8327 Imperial gal (UK)/min

Source: http://www.system-maintenance.com