Conversions

1 Btu = 1.054 × 10⁺³ J
1 Btu = 252 cal
1 Cal = 1 × 10⁺³ cal
1 cal = 1 × 10⁻³ Cal
1 cal = 3.968 × 10⁻³ Btu
1 cal = 4.186 J
1 eV = 1.0735 × 10⁻⁹ u
1 eV = 1.602 × 10⁻¹⁹ J
1 erg = 1 × 10⁻⁷ J
1 ftlb = 1.355 J
1 J = 0.2389 cal
1 J = 0.738 ftlb
1 J = 1 × 10⁺⁷ erg
1 J = 2.778 × 10⁻⁷ kWh
1 J = 6.242 × 10⁺¹⁸ eV
1 J = 9.488 × 10⁻⁴ Btu
1 kW = 1.34 hp
1 kWh = 3.6 × 10⁺⁶ J
1 u = 931.5 × 10⁺⁶ eV

1 dyne = 1 × 10⁻⁵ N
1 dyne = 4.448 × 10⁺⁵ lb
1 lb = 2.248 × 10⁻⁶ dyne
1 lb = 4.448 N
1 N = 0.2248 lb
1 N = 1 × 10⁺⁵ dyne

1 Hg = 1.316 atm
1 Pa = 9.872 × 10⁻⁶ atm
1 atm = 0.760 Hg
1 atm = 1.013 × 10⁺⁵ Pa

1 W = 1.34 × 10⁻³ hp
1 hp = 0.746 kW
1 hp = 746 W
1 deg = 0.01745329252 rad
1 deg = 2.777777778 × 10⁻³ rev
1 rad = 0.1591549431 rev
1 rad = 57.29577951 deg
1 rev = 360 deg
1 rev = 6.283185308 rad

1 Å = 1 × 10⁻¹⁰ m
1 cm = 0.3937 in
1 cm³ = 1 × 10⁻³ liter
1 ft = 0.3048 m
1 ft = 0.333333 yd
1 ft = 1.894 × 10⁻⁴ mi
1 ft = 12 in
1 ft³ = 28.33 liter
1 ft³ = 7.481 gal
1 in = 2.54 × 10⁻² m
1 in = 2.54 cm
1 in = 8.333 × 10⁻² ft
1 km = 0.6215 mi
1 m = 1 × 1010 Å
1 m = 1.0936 yd
1 m = 3.281 ft
1 m = 39.37 in
1 m = 0.0006215 mi
1 mi = 1.609 km
1 mi = 1609.0 m
1 mi = 5280 ft
1 yd = 0.9144 m
1 yd = 3 ft

1 day = 1.44 × 10⁺³ min
1 day = 2.74 × 10⁻³ year
1 day = 24 h
1 day = 8.64 × 10⁺⁴ s
1 h = 1.141 × 10⁻⁴ year
1 h = 3600 s
1 h = 4.167 × 10⁻² day
1 h = 60 min
1 min = 1.666667 × 10⁻² h
1 min = 1.901 × 10⁻⁶ year
1 min = 6.944 × 10⁻⁴ day
1 min = 60 s
1 s = 1.157 × 10⁻⁵ day
1 s = 1.666667 × 10⁻² min
1 s = 2.777778 × 10⁻⁴ h
1 s = 3.16 × 10⁻⁸ year
1 year = 3.16 × 10⁺⁷ s
1 year = 365.25636 day
1 year = 5.259 × 10⁺⁵ min
1 year = 8.766 × 10⁺³ h

1 gal = 0.1337 ft³
1 gal = 231 in³
1 gal = 3.786 liter
1 in³ = 4.33 × 10⁻³ gal
1 liter = 0.0353 ft³
1 liter = 0.264 gal
1 liter = 1 × 10⁻³ m³
1 liter = 1 × 10⁺³ cm³
1 liter = 1.0576 qt
1 m3 = 1 × 10⁺³ liter
1 qt = 0.9455 liter

1 kg = 1 × 10⁻³ t
1 kg = 6.024 × 10⁺²⁶ u
1 kg = 6.854 × 10⁻² slug
1 slug = 14.59 kg
1 t = 1 × 10⁺³ kg
1 u = 1.66 × 10⁻²⁷ kg