Вообщем, тут возникали вопросы про BTU и другие единицы и их аналоги в системе СИ. Вот прикупил линейку ребенку, а там
кое-что есть.
Temperature C=5/9*(F-32), F=9/5*C+32
1 inch = 25.4 Millimeters
1 Foot = 0.3048 Meters
1 Yard = 0.9144 Meters
1 Mile = 1.6093 Kilometers
1 Knot = 1.151 Miles
1 Sq. in. = 6.4516 Sq. cm.
1 Sq. ft. = 0.0929 Sq. m.
1 Sq. yd. = 0.8361 Sq. m.
1 Cu. in. = 16.387 Cu. cm.
1 Cu. ft. = 0.0283 Cu. m.
1 Cu. in. = 0.0036 Imp. gallons
1 Cu. in. = 0.00433 U.S. gallons
1 Cu. ft. = 6.229 Imp. gallons
1 Cu. ft. = 7.481 U.S. gallons
1 Cu. ft. = 28.32 Liters
1 Imp. gallon = 1.2001 U.S. gallons
1 Imp. gallon = 4.5460 Liters
1 U.S. gallon = 3.7854 Liters
1 Lb. = 0.4536 kg.
1 Ton (long) = 1016 kg.
1 Ton (short) = 907.2 kg.
1 Mile per Hour = 1.467 Feet per Second
1 Mile per Hour = 88 Feet per Minute
1 Mile per Hour = 26.82 Meters per Minute
1 B.T.U. = 0.252 Kilocalories
1 ft. per Minute = 0.00508 Meters per Second
1 U.S. gallon per Mile = 2.3521 Liters per km.
1 Lb. per Sq. in. = 0.0703 kg. per Sq. cm.
1 Cu. ft. water = 62.43 Weight in Lbs.
1 Cu. ft. water = 28.32 Weight in kg.
1 U.S. gallon water = 8.345 Weight in Lbs.
1 H.P. (British) = 1.014 (Metric) H.P.
1 Foot-Pound = 0.1383 kg.-meters
1 H.P. (Metric) = 75 kg.-m. per Second
1 H.P. (British) = 550 ft.-Lbs per Second
1 Foot-Pound = 1.356 Joules