| 1 km2 | 100 ha |
| 247.11 acres | |
| 1 ha | 10,000 m2 |
| 2.4711 acres | |
| 1 m2 | 1.1960 yd2 |
| 1 mm2 | 0.00155 in2 |
| 1 mile2 | 2.5899 km2 |
| 1 ft2 | 0.092903 m2 |
| 1 in2 | 645.16 mm2 |
| 0.00064516 m2 |
| 1 kg/m3 | 1.686 lb/yd3 |
| 0.62428 lb/ft3 | |
| 1 g/cm3 | 62.428 lb/ft3 |
| 1 lb/ft3 | 16.019 kg/m3 |
| 1 MJ | 0.27778 kWh |
| 1 J | 0.73756 ft. lbf |
| 1 kWh | 3.6 MJ |
| 1 Btu | 1.0551 kJ |
| 1 N | 0.10197 kgf |
| 0.22481 lbf | |
| 1 kN | 101.97 kgf |
| 224.81 lbf | |
| 1 kgf | 9.8067 N |
| 1 lbf | 4.4482 N |
| 1 km | 0.62137 mile |
| 1 m | 3.2808 ft |
| 1.0936 yd | |
| 1 cm | 0.39370 in |
| 1 mm | 0.03937 in |
| 1 mile | 1.6093 km |
| 5280 ft | |
| 1 yd | 0.9144 m |
| 1 ft | 0.3048 m |
| 304.8 mm | |
| 1 in | 25.4 mm |
| 1 tonne (metric) | 1,000 kg |
| 2204.6 lb | |
| 0.98420 ton (long) | |
| 1.1023 ton (short) | |
| 1 kg | 2.2046 lb |
| 1 g | 0.03527 oz (avdp.) |
| 1 Btu | 1.0551 kJ |
| 1 ton (long) | 1016.5 kg |
| 2240 lb | |
| 1 ton (short) | 907.19 kg |
| 2000 lb | |
| 1 lb | 0.45359 kg |
| 1 oz (avdp.) | 28.349 g |
| 1 hp | 745.70 W (J/s) |
| 1 ft. lbf/s | 1.3558 W |
| 1 W | 0.0013410 hp |
| 3.4121 Btu/hr | |
| 1 Btu/hr | 0.29307 W |
| 1 mmBtu/hr | 293.07 kW |
| 393.01 hp |
| 1 Pa (N/m2) | 0.000145 psi (lbf/in2) |
| 1 kPa (kN/m2) | 1,000 Pa |
| 0.14504 psi | |
| 20.885 lbf/ft2 | |
| 0.2953 in Hg | |
| 1 MPa (MN/m2) | 1,000 kPa |
| 145.04 psi | |
| 1 bar | 100 kPa |
| 14.504 psi | |
| 1 atm | 101.33 kPa |
| 14.696 psi | |
| 1 mm H2O | 9.8067 Pa |
| 1 in H20 (IWC) | 0.24908 kPa |
| 0.036125 psi | |
| 1 m H2O | 9.8067 kPa |
| 1.422 psi | |
| 1 mm Hg | 133.32 Pa |
| 0.01934 psi | |
| 1 psi (lbf/in2) | 6.8948 kPa |
| 1 psi | 16 oz/in2 |
| 1 lbf/ft2 | 47.880 Pa |
| 1 in Hg | 3.3864 kPa |
| 0.491 psi | |
| 1 oz/in2 | 0.0625 psi |
| 0.43092 kPa |
| Kelvin (K) | = (tF + 459.67) / 1.8 |
| = (tC + 273.15) | |
| Celsius (C) | = (tF - 32) / 1.8 |
| Fahrenheit (F) | = (tC x 1.8) + 32 |
| 1 ft lbf | 1.3558 N m |
| 1 N m | 0.73756 ft lbf |
| 1 m3 | 6.2898 bbl (US oil) 1.3080 yd3 |
| 1 liter (dm3) | 0.035315 ft3 0.26417 US gal 1.0570 US qt 2.1134 US pt 0.21997 imp gal |
| 1 cm3 | 0.06102 in3 0.0338 US fl oz 0.0352 UK fl oz |
| 1 yd3 | 0.76455 m3 |
| 1 ft3 | 0.028317 m3 |
| 1 in3 | 16.387 cm3 |
| 1 bbl (US oil) | 0.15899 m3 |
| 1 US gal | 3.7854 liters (dm3) 0.13368 ft3 |
| 1 US pt | 0.47318 liters (dm3) |
| 1 US fl oz | 29.573 cm3 |
| 1 103m3 | 0.035315 mmscf |
| 1 mmscf | 28.317 103m3 |
| 1 bbl (US oil) | 0.15899 m3 |