Summary of conversion of mechanical test units

In conducting mechanical tests, it is inevitable to encounter unit conversion. Jinan Hengsi Shanda Instrument Co., Ltd. summarized it for everyone, hoping it will be helpful to everyone.
1. Force conversion calculation
1 Newton (N) = 0.225 pound force (lbf) = 0.102 kilogram force (kgf)
1 kg force (kgf) = 9.81 nuggets (N)
1 pound force (lbf) = 4.45 Newton (N) 1 dyn = 10-5 Newton (N)
2. Temperature conversion
K=5/9 (?F+459.67) K=℃+273.15
n℃=(5/9?n+32) ?F n?F=[(n-32)?5/9]℃
1?F=5/9℃ (temperature difference)
3. Pressure conversion
Pressure 1 bar = 105 Pa (Pa) 1 dyne/cm2 (dyn/cm2) = 0.1 Pa (Pa)
1 torr = 133.322 Pa (Pa) 1 mm Hg (mmHg) = 133.322 Pa (Pa)
1mm water column (mmH2O) = 9.80665 Pa (Pa) 1 Engineering atmospheric pressure = 98.0665 kPa (kPa)
1 kPa (kPa) = 0.145 lbs/inch 2 (psi) = 0.0102 kg force/cm2 (kgf/cm2) = 0.0098 atmospheric pressure (atm)
1 lbs force/inch 2 (psi) = 6.895 kPa (kPa) = 0.0703 kg force/cm2 (kg/cm2) = 0.0689 bar (bar) = 0.068 atmospheric pressure (atm)
1 Physical atmospheric pressure (atm) = 101.325 kPa (kPa) = 14.696 lbs/inch 2 (psi) = 1.0333 bar (bar)
4. Length conversion
1 km (km) = 0.621 miles (m) 1 m (m) = 3.281 feet (ft) = 1.094 yards (yd)
1 cm (cm) = 0.394 in (in) 1 mile (mile)
=1.609 km (km) 1 inch (fm) =1.829 (m)
1 inch (in) = 2.54 cm (cm)
1 nautical mile (n mile) = 1.852 km (km) 1 yard (yd) = 3 feet (ft)
1 rod (rad) = 16.5 feet (ft)
1 mile = 5280 feet (ft)
1 nautical mile (n mile) = 1.1516 miles (mile)
1 foot (ft) = 12 inches (in)

5. Area conversion calculation
1 square kilometer (km2) = 100 hectares (ha) = 247.1 acres (acre) = 0.386 square miles (mile2)
1 square meter (m2) = 10.764 square feet (ft2)
1 hectare (ha) = 10000 square meters (m2) = 2.471 acres (acre)
1 square inch (in2) = 6.452 square centimeters (cm2)
1 acre = 0.4047 hectares (ha) = 4.047?10-3 square kilometers (km2)
=4047 square meters (m2)
1 square foot (ft2) = 0.093 square meters (m2)
1 square code (yd2) = 0.8361 square meters (m2)
1 square meter (m2) = 10.764 square feet (ft2)
1 square mile (mile2) = 2.590 square kilometers (km2)
6. Volume conversion calculation
1 Meijier (gi) = 0.118 liters (1) 1 Mei Pint (pt) = 0.473 liters (1)
1 US quart (qt) = 0.946 liters (1) 1 US gal (gal) = 3.785 liters (1)
1 barrel (bbl) = 0.159 cubic meters (m3) = 42 mgal (gal)
1 acre? Feet = 1234 cubic meters (m3)
1 cubic inch (in3) = 16.3871 cubic centimeters (cm3)
1 billion cubic feet (bcf) = 28.317 million cubic meters (m3)
1 trillion cubic feet (tcf) = 28.317 billion cubic meters (m3)
1 million cubic feet (MMcf) = 28,317 million cubic meters (m3)
1 thousand cubic feet (mcf) = 28.317 cubic meters (m3) 1 ng gallon (gal) = 4.546 liters (1)
1 cubic foot (ft3) = 0.0283 cubic meters (m3) = 28.317 liters (liter)
1 cubic meter (m3) = 1000 liters (liter) = 35.315 cubic feet (ft3) = 6.29 barrels (bbl)
7. Quality conversion
1 long ton = 1.016 ton (t) 1 kg (kg) = 2.205 lb (lb)
1 lb (lb) = 0.454 kg (kg) [normal balance] 1 oz (oz) = 28.350 g (g)
1 short ton (sh.ton) = 0.907 ton (t) = 2000 lb (lb)
1 ton (t) = 1000 kg (kg) = 2205 lb (lb) = 1.102 short ton (sh.ton)
=0.984 long ton (long ton)
8. Density conversion
1 lb/(lb/ft3) = 16.02 kg/m3 (kg/m3)
API degree = specific gravity at 141.5/15.5℃ -131.5
1 lb/ng gallon (lb/gal) = 99.776 kg/m3 (kg/m3)
1 Wamei density (B) = specific gravity at 140/15.5℃ -130
1 lb/inch 3 (lb/in3) = 27679.9 kg/m3 (kg/m3)
1 lb/mega gallon (lb/gal) = 119.826 kg/m3 (kg/m3)
1 lb/(oil) barrel (lb/bbl) = 2.853 kg/m3 (kg/m3)
1 kg/m3 (kg/m3) = 0.001 g/cm3 (g/cm3) = 0.0624 lb/ft3 (lb/ft3)
9. Movement viscosity conversion
1s (St) = 10-4 meters 2/s (m2/s) = 1 cm 2/s (cm2/s)
1 foot 2/s (ft2/s) = 9.29030?10-2 meters 2/s (m2/s)
1 cs (cSt) = 10-6; m 2/s (m2/s) = 1 mm 2/s (mm2/s)
10. Dynamic viscosity conversion
Dynamic viscosity 1 pole (P) = 0.1 Pa?s (Pa?s) 1 cp (cP) = 10-3 Pa?s (Pa?s)
1 lbf?s/ft2 (lbf?s/ft2) = 47.8803 Pa?s (Pa?s)
1 kilogram second/m2 (kgf?s, m2) = 9.80665 Pa?s (Pa?s)
11. Transfer heat transfer coefficient
1 kcal/m2? time (kcal/m2?h) = 1.16279 watts/m2 (w/m2)
1 kcal/(2 m2???℃) [1kcal/(m2?h?℃)]
=1.16279 watts/(m2?Kelvin) [w/(m2?K)]
1 NT/(ft2??F)〔Btu/(ft2?h??F)〕
=5.67826 watts/(m2?Kelvin)〔(w/m2?K)〕
1 m 2 °C/kcal (m2?h?℃/kcal)
=0.86000m2?Kelvin/W (m2?K/W)
12. Thermal conductivity conversion
1 kcal (meter hour?℃) [kcal/(m?h?℃)]
=1.16279 watts/(m?Kelvin) [W/(m?K)]
1 NT/(ft??F)〔But/(ft?h??F)
=1.7303 watts/(m?Kelvin) [W/(m?K)]
13. Comparison heat exchange calculation
1 kcal/(kg?℃) [kcal/(kg?℃)]
= 1 British thermal unit/(lb??F)〔Btu/(lb??F)〕
＝4186.8 joules/(kg? Kelvin)〔J/(kg? K)〕
14. Heat power conversion
1 card (cal) = 4.1868 Joule (J) 1 big card = 4186.75 Joule (J)
1 kilogram meter (kgf?m) = 9.80665 joules (J)
1 British thermal unit (Btu) = 1055.06 Joule (J)
1 kWh (kW?h) = 3.6?106 Joule (J)
1 foot pound force (ft?lbf) = 1.35582 joules (J)
1 meter horsepower hour (hp?h) = 2.64779?106 Joule (J)
1 inch horsepower hour (UKHp?h) = 2.68452?106 Joule
1 joule = 0.10204 kg? meters
＝2.778?10-7 kW?Hours
＝3.777?10-7 metric horsepower hours
＝3.723?10-7 inch horsepower hours
＝2.389?10-4 kcal
＝9.48?10-4 British thermal units
15. Gas and oil ratio conversion
1 cubic foot/barrel (cuft/bbl) = 0.2067 cubic meters/ton (m3/t)

16. Hot value conversion
1 barrel of crude oil = 5.8?106 British thermal units (Btu)
1 ton of coal = 2.406?107 British thermal units (Btu)
1 cubic meter of moisture = 3.909?104 BTU (Btu)
1 kWh hydropower = 1.0235?104 ying thermal (Btu)
1 cubic meter of dry gas = 3.577?104 British thermal units (Btu)
17. Heat equivalent amount conversion
1 barrel of crude oil = 5,800 cubic feet of natural gas (calculated based on average calorific value)
1 cubic meter of natural gas = 1.3300 kg of standard coal
1 kg of crude oil = 1.4286 kg of standard coal
Fourteen, power conversion
1 NT unit/hour (Btu/h) = 0.293071 watts (W)
1 kilogram?m/s (kgf?m/s) = 9.80665 watts (w)
1 card/s (cal/s) = 4.1868 watts (W) 1 meter horsepower (hp) = 735.499 watts (W)
18. Speed ​​conversion
1 mile/h (mile/h) = 0.44704 m/s (m/s)
1 foot/second (ft/s) = 0.3048 meters/s (m/s)
19. Transfer of permeability
1 Darcy = 1000 milli Darcy 1 square centimeter (cm2) = 9.81?107 Darcy
Twenty. Ground temperature gradient conversion
1?F/100 feet = 1.8℃/100 meters (℃/m)
1℃/km = 2.9?F/mile (?F/mile) = 0.055?F/100 feet (?F/ft)
21. Oil and gas production conversion
1 barrel (bbl) = 0.14 tons (t) (crude oil, global average)
1 trillion cubic feet per day (tcf/d)
=28.32 billion cubic meters per day (m3/d)
=10.336 trillion cubic meters per year (m3/a)
1 billion cubic feet per day (bcf/d)
=0.283.2 million cubic meters per day (m3/d)
=10.336 billion cubic meters per year (m3/a)
1 million cubic feet per day (MMcf/d)
=28,320 cubic meters per day (m3/d)
=10.3355 million cubic meters per year (m3/a)
1,000 cubic feet per day (Mcf/d)
=28.32 cubic meters/day (m3/d)
=103.36 million cubic meters per year (m3/a)
1 barrel/day (bpd) = 50 tons/year (t/a) (crude oil, global average)
1 ton (t) = 7.3 barrels (bbl) (crude oil, global average)
(Source: Jinan Hengsi Shanda Instrument Co., Ltd.)