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CONVERSION TABLES

You will note that my superscript has got lost. I'll repair the data asap, for now I'll leave it as x10-4 meaning "multiplied by ten to the power of minus four. Also you need to read m3 as metre cubed etc. etc.. I am assured that the next issue of HTML etc will cope with equations for us awkward engineers.

0. Number

• 1 dozen = 12
• 1 bakers dozen = 13
• 1 score = 20
• 1 gross = 144

1. Acceleration

• 1 ft/s� = 0.3048 m/s�
• 1 m/s� = 3.2808 ft/s�

2. Area

• 1 in� = 6.4516 cm�
• 1 in� = 6.4516x10-4 m�
• 1 ft� = 929 cm�
• 1 ft� = 0.0929 m�
• 1 m� = 10.764 ft�
• 1 hectare = 10,000 m�
• 1 hectare = 2.471 acre
• 1 mi� = 640 acre
• 1 mi� = 259 hectare

3. Density

• 1 lb/in3 = 27.680 g/cm3
• 1 lb/in3 = 2.768x104 kg/m3
• 1 lb/ft3 = 16.019 kg/m3
• 1 kg/m3 = 0.06243 lb/ft3
• 1 slug/ft3 = 515.38 kg/m3
• 1 lb - mol/ft3 = 16.019 kg -mol/m3
• 1 kg-mol/m3 = 0.06243 lb -mol/ft3

4. Diffusivity (heat, mass, momentum)

• 1 ft�/s = 0.0929 m�/s
• 1 ft�/h = 0.2581 cm�/s
• 1 ft�/h = 0.2581 X 10-4 m�/s
• 1 m�/s = 10.7639 ft�/s
• 1 cm�/s = 3.8745 ft� /h

5. Energy, heat, power

• 1 J = 1 W.s = 1 N.m
• 1 J = 107 erg
• 1 Btu = 1055.04 J
• 1 Btu = 1055.04 W.s
• 1 Btu = 1055.04 N.m
• 1 Btu = 252 cal
• 1 Btu = 0.252 kcal
• 1 Btu = 778.161 ft.lbf
• 1 Btu/h = 0.2931 W
• 1 Btu/h = 0.2931 x I0-3kW
• 1 Btu/h = 3.93 x10-4 hp
• 1 cal = 4.1868 J (or W.s or N.m)
• 1cal =3.968 x 10-3 Btu
• 1kcal = 3.968 Btu
• 1hp = 550 ft.lbf/s
• 1 hp = 745.7 W = 745.7 N.m/s
• 1W.h = 3.413 Btu
• 1 kW.h = 3413 Btu
• 1 volt.coulomb = 107 erg
• 1 eV. = 1.601 x 10-12 erg
• 1 eV. = 1.601 x 10-19 J

6. Heat capacity, heat per unit mass, specific heat

• 1Btu/(h . �F) = 0.5274 W/�C
• 1W/�C = 1.8961 Btu/(h. �F)
• 1Btu/lb = 2325.9 J/kg
• 1Btu/Ib = 2.3259 kJ/kg
• 1Btu/(Ib .�F) = 4186.69 J/(kg.�C)
• 1Btu/(Ib .�F) = 4.18669 kJ/(kg. �C) or J/(g. �C)
• 1Btu/(Ib .�F) = I cal/(g.�C) = I kcal/(kg.�C)

7. Heat flux

• 1 Btu/(h.ft�) = 3.1537 W/m�
• 1 Btu/(h.ft�) = 3.1537 x 10-3 kW/m�
• 1 W/m� = 0.31709 Btu/(h. ft�)

8. Heat generation rate

• 1 Btu/(h.ft3) = 10.35 W/m3
• 1 Btu/(h ft3) = 8.9 kcal/(h . m3)
• 1 W/m3 = 0.0966 Btu/(h. ft3)

9. Heat transfer coefficient

• 1 Btu/(h.ft�. �F) = 5.677 W/(m�.�C)
• 1 Btu/(h.ft�.�F) = 5.677 x 10-4 W/(cm�.�C)
• 1 W/(m�. �C) = 0.1761 Btu/(h.ft�.�F)
• 1 Btu/(h.ft�.�F) = 4.882 kcal/(h.m�. �C)

10. Length

• 1 A� = 10-8 cm
• 1 A� = 10-10 m
• 1 um = 10-3 mm
• 1 um = 10-4 cm
• 1 um = 10-6 m
• 1 in = 2.54 cm
• 1 in = 2.54 x 10-� m
• 1 ft = 0.3048 m
• 1 ft = 12 in
• 1 yd = 3 ft
• 1 rod ( or pole or perch) = 5.5 yd
• 1 chain = 22 yd
• 1 furlong = 10 chain
• 1 mi = 1,760 yd
• 1 naut mi = 6,080 ft
• 1 m = 3.2808 ft
• 1 mi = 1609.34 m
• 1 mi = 5280 ft
• 1 light year = 9.46 x 1015 m

11. Mass

• 1oz = 28.35 g
• 1 metric carat = 0.2 g
• 1 lb = 7,000 grain (gr)
• 1 oz = 16 drams (dr)
• 1 stone = 14 lb
• 1 quarter = 28 lb
• 1 cwt = 112 lb
• 1 ton (long) = 2240 lb
• 1 lb = 16 oz
• 1 lb = 453.6 g
• 1 lb = 0.4536 kg
• 1kg = 2.2046 lb
• 1 slug = 32.1739 lb
• 1 t (metric) = 1000 kg
• 1 t (metric) = 2205 lb
• 1 ton (short) = 2000 lb
• 1 ton (long) = 2240 lb

12. Mass flux

• 1 lb.mol/(ft�.h) = 1.3563 x 10-3 kg.mol/(m�.s)
• 1 kg. mol/(m�.s) = 737.3 lb.mol/(ft�.h)
• 1 lb/(ft� .h) = 1.3563 x 10-3 kg/(m�.s)
• 1 lb/(ft�.s) = 4.882 kg/(m�.s)
• 1 kg/(m�.s) = 737.3 lb/(ft�.h)
• 1 kg/(m�.s) = 0.2048 lb/(ft� .s)

13. Pressure, force

• 1 N = 1 kg.m/s�
• 1 N = 0.22481 lbf
• 1 N = 7.2333 pdl
• 1 N = 105 dyn
• 1 lbf = 32.174 ft.lb/s�
• 1 lbf = 4.4482 N
• 1 lbf = 4.4482 kg.m/s�
• 1 lbf = 32.1739 pdl
• 1 oz = 28.35 g
• 1 oz = 437.5 grains
• 1 lb = 16 oz
• 1 stone = 14 lb
• 1 cwt = 112 lb
• 1 ton = 20 cwt
• 1 lbf/in� =1 psi = 6894.76 N/m�
• 1 lbf/ft� = 47.880 N/m�
• 1 bar = 105 N/m� = 105 Pa
• 1 atm = 14.696 lbf/in�
• 1 atm = 2116.2 lbf/ft�
• 1 atm = 1.0132 x105 N/m�
• 1 atm = 1.0132 bar
• 1 Pa = 1N/m�
• 1 dyne = 10-5 N
• 1 torr = 133.322 N/m�

14. Specific heat

• 1 Btu/(Ib.�F) = 1 kcal /(kg.�C) = 1 cal/(g. �C)
• 1 Btu/(Ib.�F) = 4186.69 J/(kg. �C) or W.s/(kg. �C)
• 1 Btu/(Ib.�F) = 4.18669 J/(g. K) or W.s/(g. �C)]
• 1 J/(g. �C) = 0.23885 Btu/(Ib.�F) or cal/(g. �C) or kcal/(kg.�C)

15. Speed

• 1 ft/s = 0.3048 m/s
• 1 m/s = 3.2808 ft/s
• 1 mi/h = 1.4667 ft/s
• 1 mi /h = 0.44704 m/s

16. Surface tension

• 1 lbf/ft = 14.5937 N/m
• 1 N/m = 0.068529 lbf/ft

17. Temperature

• 1 K = 1.8 �R
• F = 1.8(K - 273) + 32
• K = (F - 32) / 1.8 + 273
• C = (R - 492) / 1.8

18. Thermal conductivity

• 1 Btu/(h.ft.�F) = 1.7303 W/(m. �C)
• 1 Btu/(h.ft.�F) = 1.7303 x 10-� W/(cm. �C)
• 1 Btu/(h.ft.�F) = 0.4132 cal/(s. m. �C)
• 1 W/(m.�C) = 0.5779 Btu/(h.ft.�F)
• 1 W/(cm. �C) = 57.79 Btu/(h.ft.�F)

19. Thermal resistance

• 1 h. �F/Btu = 1.896 �C/W
• 1 �C/W = 0.528 h. �F/Btu

20. Viscosity

• 1 P = 1 g/(cm.s)
• 1 P = 241.9 lb/(ft.h)
• 1 P = 100 cP
• 1 lb/(ft. s) = 1.4882 kg/(m.s)
• 1 lb/(ft. s) = 14.882 P
• 1 lb/(ft. s) = 1488.2 cP
• 1 lb/(ft. h) = 0.4134 x 10-3 kg/(m.s)
• 1 lb/(ft. h) = 0.4134 x 10-� P
• 1 lb/(ft. h) = 0.4134 cP
• 1 cSt = 5.58 in�/h

21. Voltage, Magnetism , Charge etc

• 1 amp = 0.1 e.m. unit
• 1 weber/m� = 10,000 gauss
• 1 A.T. = 0.4 PI gilbert
• 1 A.T./m = 0.004 PI oersted
• 1 weber = 10E8 maxwell
• 1 henry = 10E9 e.m. unit
• 1 coulomb = 3E9 e.s. unit
• 1 e.s. unit = 300 volt
• 1 farad = 9E11 e.s. unit

22. Volume

• 1 gal (U.S.) = 3.7854 litres
• 1 gal (U.S.) = 3.7854 x 10-3 litres
• 1 gal (U.S.) = 0.13368 ft3
• 1 in3 = 16.387 cm3
• 1 cm3 = 0.06102 in3
• 1 ft3 = 28.3168 liters
• 1 ft3 = 0.0283168 m3
• 1 oz (U.K., fluid) = 8 fluid drachms
• 1 gill = 5 oz (U.K., fluid)
• 1 pint = 4 gills
• 1 quart = 2 pint
• 1 peck = 2 gal (U.K.)
• 1 bushel = 4 peck
• 1 quarter = 8 bushel
• 1 chaldron = 36 bushel
• 1 oz (U.S, fluid) = 29.573 cm3
• 1 ft3 = 7.4805 gal (U.S.)
• 1 m3 = 35.315 ft3
• 1 gal (U.S.) = 0.8327 gal (U.K.)
• 1 Bulk Barrel UK = 36 gal (U.K.)