Air Purification Company

I-P Equivalents of Metric Units

Metric Equivalents of I-P Units

Area

1m² (square meter) = 10.764 ft²

1 ft² (square foot) = .09290 m²

Density

1 kg/m³ = .062428 lbm/ft³

1 lbm/ft³ = 16.018 kg/m³

1 g/cm³ = 62.428 lbm/ft³

1 lbm/ft³ = .016018 g/cm³

Energy

1 J (Joule) or N-m (Newton-meter) = .73756 ft-lb

1 ft-lb (foot pound) = 1.3558 N-m

1 kcal (kilo calorie) = 3.9683 Btu

1 Btu (British thermal unit) = 252 cal

Flow Rate (Volume)

1 m³/s (cubic meter per second) CMS = 2118.9 CFM

1 CFM (Cu. Ft/min) = .00047195 m³/s

1 m³/min (cubic meter per minute) CMM = 35.315 CFM

1 CFM = .02832 m³/min

1 m³/hr (cubic meter per hour) CMH = .58858 CFM

1 CFM = 1.6990 m³/hr

1 l/s (liter per second) = 2.1189

1 CFM = .47195 l/s

Force

1 N (Newton) = .22481 lb

1 lb (pound) = 4.4482 N

1 kp (kilopond) = 2.2046 lb

1 lb = .45359 kp

Gas Constant

1 J/kg-K (Joule per kilogram Kelvin) = .18586 ft-lb/lbm- R

1 ft-lb/lbm-R* = 5.3803 J/kg-K

1 m²/s²-K (sq. mtr per sec sq. Kelvin) = 5.9800 ft²/s²- R

1 ft2/s2-R** = .16723 m2/s2-K

1 cal/g-C (calorie per gram C) = 4186.8 J/kg-K

1 Btu/lbm-R = 1.0000 cal/g-C

*(foot-pound per poundmass degree Rankine)

**(sq-ft per second-square degree Rankine)

Length

1 mm (millimeter) = .03937 inch

1" (inch) = 25.4 mm

1 cm (centimeter) = .39370 inch

1" = 2.54 cm

1 m (meter) = 3.2808 ft

1 ft (foot) = .30480 m

1 km (kilometer) = .62137 mi

1 mi (mile) = 1.6093 km

Mass

1 kg (kilogram) = 2.2046 lbm

1 lbm (pound mass) = .45359 kg

Power

1 W (Watt) = .00134 hp

1 hp (horsepower) = .7457 kW

1 kW (kilo-Watt) = 1.3410 hp

1 hp = 745.70 W

1 mhp (metric horsepower) = .98632 hp

1 hp = 1.0139 mhp

Pressure or Stress

1 N/m² (Newton per m²) or Pa (Pascal) = .0040264" wg

1" wg (inches water guage) = 248.66 Pa or N/m²

1 mm Hg or torr (mm Mercury) = .53616" wg

1" wg = 1.8651 mm Hg or torr

1 kPa (kilo Pascal) = .1450 psi

1 psi (pounds per sq. inch) = 6894.8 Pa or N/m²

1 atm (atmosphere) = 29.921" Hg

1" Hg (inch Mercury) = 3386.4 Pa or N/m²

(mm Hg at 0 deg. C or 86 deg. F)

(inches wg at 68 deg F or 20 deg C)

1 oz/in² = 1.732" wg

1" wg = 0.5774 oz/in²

Temprature

For temperature intervals and rise,

For temperature intervals and rise,

1 deg. C (degree Celcius) = 9/5 deg. F

1 deg F (degree Fehrenheit) = 5/9 deg C

For temperature in F (Fehrenheit) = tC x 9/5 + 32

For temperature in C = (tF-32) x 5/9

Torque

1 N-m (Newton meter) = 8.8507 in-lb

1 lb-in (pound inch) = .11298 N-m

1 N-m (Newton meter) = .73756 lb-ft

1 lb-ft (pound foot) = 1.3558 N-m

Velocity & Speed

1 m/s = 196.5 fpm

1 fpm (feet per minute) = .00508 m/s

1 km/hr (kilometer per hour) = .62137 mph

1 mph (mile per hour) = 1.6093 km/hr

1 rps (revolution per second) = .016667 rpm

1 rpm (revolution per minute) = 60 rps