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# Reference Data – Converters

LENGTH AREA     PRESSURE 1in = 25.4mm 1mm = 0.039in 1ft = 30.5cm 1cm = 0.033ft 1yd = 0.914m 1m = 1.094yd 1mi = 1.61km 1km = 0.62mi 1in2 = 645mm2 1mm2 = 0.002in2 1in2 = 6.45cm2 1cm2 = 0.155in2 1ft2 = 929cm2 1cm2 = 0.00107ft2 1yd2 = 0.836m2 1m2 = 1.2yd2 1ac2 = 0.405ha2 1ha2 = 2.47ac2 1mi2 = 2.59km2 1km2 = 0.387mi2 1psi = 6.9kpa 1kpa = 0.145psi 1in of water = 249kpa 1pa = 0.004in water 1ft of water = 0.433psi 1psi = 2.31ft of water 1ft of water = 0.305m of water 1m of water = 3.28ft of water 1kg f/sq cm = 98kpa 1kpa = 0.01kg f/sq cm 1bar = 100kpa 1kpa = 0.01bar 1bar = 10m head 1ft/s = 0.305m/s 1m/s = 0.039in 1m/s = 3.6km/h 1km/h = 0.033ft 1mi/h = 1.6093 km/h 1km/h = 0.6214mi/h 1 imp gal = 0.00455 m3 1 m3 = 220 imp gal 1 US gal = 0.00378 m3 1 m3 = 264.2 US gal 1 imp gal = 1.201 US gal 1 US gal = 0.8327 imp gal 1 US bbl= 34.97 imp gal / 42US gal / 0.159 m3 1in3 = 16.38cm3 1cm3 = 0.061in3 1ft3 = 0.028m3 1 m3 = 35.31ft3 1yd3 = 0.7646m3 1m3 = 1.307yd3 1m3 of water = 1kl of water 1kl = 1000ltrs 1t of water = 1m3 1lb force = 4.4448n 1n = 0.2249lb force 1ft/lb = 1.3557nm 1nm = 0.737lb force 1ft3/min = 0.472L/sec 1L/sec = 2.1189 cubic ft3/min 1ft3/min = 0.0283m/min 1m3/min = 35.31 cubic ft3/min 1 imp gal/min = 0.076L/sec 1L/s = 13.2 imp gal/min 1 US gal/min = 0.063L/sec 1L/s = 15.85 US gal/min 1 imp gal/min = 0.2728 cubicmetre/hr 1m3/hr = 3.666 imp gal/min 1 US gal/min = 0.2271 cubicmetre/hr 1m3/hr = 4.403 US gal/min 1L/s = 543.439 barrels/day 1bbl/day = 0.002 litres/sec CËš = F° minus 32 divide by 1.8 FËš = C° multiply by 1.8 and add 32 KËš = C° + 273.15 1 horsepower = 550 ft lbs/sec 1 kilowatt = 1.341 horsepower 1 horsepower = 0.7457 kilowatts 76 centimetres (760mm) of mercury 33.899 feet of water 29.921 inches of mercury 14.696 psi 10.3322 metres of water 101.325 kilopascal 406.782 inches of water 2 3000 3600 4 1500 1800 6 1000 1200 8 750 900 10 600 720 12 500 600 Horsepower = Torque ft/lb rpm divide by 5252 Torque (ft / lb) = Horsepower x 5252 divide by rpm Torque (in / lb) = Horsepower x 63025 divide by rpm

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