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MISCELLANEOUS INFORMATION

Unit

Conversion to

Multiply by

Reciprocal

Pressure or Stress (Cont.) atmosphere atmosphere torr (mm Hg) inch of water foot of water dyne per centimetre2

bar    1,013   0,9872 megapascal    0,1013   9,872 pascal   133,32    0, 007501 pascal  248,8   0,004019 pound force per inch2    0,4335   2,307 pascal    0,1000  10,00

Work, Heat and Energy British thermal unit (Btu) foot pound-force calorie Btu kilocalorie Btu Btu per hour watthour horse power

joule

1055,    0,0009479

joule    1,356   0, 7375 joule    4,187   0,2389 foot pound-force  778,   0,001285

Btu    3,968   0,252

kilogram metre  107,56   0,009297 watt    0,2929   3,414 joule

3600,   0,0002778

kilowatt    0,7457   1,341

Miscellaneous

pound per gallon (U.S.) pound mole (gas) gram mole (gas) board foot milliampere per foot2 gallons (U.S.) per minute pound-force kilopond (Kp)

gram per litre   119,8    0,00835 cubic foot (STP)   359,    0,00279 litre (STP)    22,4    0,0446 cubic metre     0,00236

423,7

milliampere per metre2   10,76   0,0929 metre3 per day    5,451   0,1835 newton    4,448   0,2248 newton (N)    9,81   0,102

Roman Numerals Basic numerals:

I 1

V 5

X 10

L 50

C 100

D 500

M 1000

Combination rules:

– A smaller numeral in front of a larger is subtracted from the larger – A smaller numeral after a larger is added to the larger – Equal numerals after each other are added together – II and III are never placed in front of a larger numeral, e.g. 7 is always VII, never IIIX

A horizontal line above a numeral multiplies this numeral with 1000. A horizontal line above together with a vertical line on each side of the numeral multiplies the numeral with 100.000.

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