1 m = 3.28 1 ft = 1.094 yards.

1 cm) =0.394 inch (inch)

1 A = 10- 10 meter (m)

1 mile = 1.609 km

1 fathom (fm)= 1.829(m) 1 ft =0.3048 m (m)

1 inch =2.54 cm.

1 nautical mile =1.852km.

1 chain =66 feet = 20. 1168m1yard = 0.9144m.

1 mil) =0.0254 mm (mm)

1 ft = 12 inch.

1 yard =3 feet 1 rod (radian) = 16.5 feet

1 mile) =5280 feet

1 nautical mile = 1. 15 16 nautical mile.

Square area system

1 square kilometer = 100 hectare =247. 1 acre =0.386 square mile.

1 m2 =10.764 square foot (ft2) 1 mu (m2)= 100 m2.

1 hectare =10000m2 = 2.47 1 acre.

1 square mile (2 miles) =2.590 square kilometers (km2) 1 acre (acre)=0.4047 hectares (ha).

4.047× 10-3 square kilometers) =4047 square meters.

1 square foot = 0.093m2 1 square inch = 6.452cm2.

1 square yard (yd2)=0.836 1 square meter (m2)

volume unit

1 m3 =1000L (L) =35.3 15 cubic feet =6.29 barrels (barrels)

1 cubic foot (ft3)=0.0283 cubic meter (m3)=28.3 17 liter (liter) 1 thousand cubic feet (mcf)=28.3 17 cubic meter (m3) 1 million cubic feet.

100 billion cubic feet (BCF) = 28317,000 cubic meters (m3) 10 trillion cubic feet (TCF) = 2831700 million cubic meters (m3) 1 cubic inch (in3).

1 acre foot = 1234 cubic meters 1 barrel (bbl)=0. 159 cubic meters (m3)=42 American gallons (gal).

1 gallon =3.785 liters (1)

1 American Quart (qt)=0.946 L (1)/American Depletion (pt)=0.473 L (1) 1 Meguiar's (GI) = 0./kloc-0.

1 ton (t)= 1000 kg)=2205 lb =1.102 short ton (sh.ton)=0.984 long ton.

1 kg)=2.205 lb1short ton (sh.ton)=0.907 ton (t) = 2,000 lb.

1 long ton) =1.016+06t (t) 1 lb)=0.454 (kg)[ constant] 1 oz)=28.350

1 kg/m3 (kg/m3) = 0.00 1 g/cm3 (g/cm3) = 0.0624 lb/cm3.

1 lb/ft3 = 1 6.02kg/m3 (kg/m3) 1 lb/in3 (lb/in3) = 27,679.9kg/m3 (kg/m3)1lb/USA.

1 lb/gal = 99.776kg/m3 (kg/m3) 1 lb/bbl = 2.853kg/m3 (kg/m3) 1 Baume (b).

Kinematic viscosity unit

1 sq ft/sec = 9.29030× 10-2 m2/sec (m2/sec)

1 sec (sec) = 10-4 m2/sec (m2/sec) = 1 cm2/sec (cm2/sec)

1 cm (cm) = 10-6 m2/s (m2/s) = 1 m2/s (mm2/s)

Dynamic viscosity unit

1 pa = 0. 1 pa sec.

1 centipoise (centipoise) = 10-3 Pas sec.

1 kgfs/m2 (kgf s，m2)= 9.80665 pa·s(pa·s) 1 lbfs/ft2(lbf s/ft2)= 47.8803 pa·s(pa·s)。

1 Newton (n) = 0.225 lbf = 0. 102 kgf.

1 kgf = 9.8 1 N。

1 lbf) = 4.45n 1 dyne =10-5n.

pressure

1 bar =105pa.

1 kPa = 0. 145 psi = 0.0 102 2 (kg//cm2 = 0.0098 atm 1 psi = 6.88. Cm2)=0.0689 bar) =0.068 atmospheric pressure = 1 physical atmospheric pressure =10/0.325 kPa (kPa)= 14.696 lb/sq. in = 65438+.

1 engineering atmospheric pressure =98.0665 kPa1mm water column (mmH2O)=9.80665 Pa.

1 mmhg =133.322pa.

1 Torr =133.322pa (Pa) 1 dyne/cm2 = 0.1pa.

Temperature unit

K=5/9( F+459.67)

K =℃+273.15nf = [(n-32) × 5/9]℃ NC = (5/9n+32) f1f = 5/9c (temperature difference).

heat transfer coefficient

1 kcal/(m2 h℃) [1kcal/(m2 h℃)] =1.16279W/(m2 kelvin) [w/(m2 k)] 6579 W. M2 K/W) 1+0 m2h℃/kcal = 0.86000m2 kelvin/watt (m2k/w)1kcal/m2h (kcal/m2h)

1 kcal (m h c) [kcal/(m h c)] =1.16279W/(m kelvin) [w/(m k)]

1 British thermal unit/(feet Fahrenheit) [but/ (feet Fahrenheit)] = 1.7303 watt/(meters Kelvin) [w/ (meters K)].