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Unit conversions formulas
17 formulas for Unit conversions, from the Physics — Units, Dimensions & Constants section of the Quantix formula library. Tap 🧮 next to a formula to solve it for any variable with step-by-step working.
| Name | Formula | Note |
|---|---|---|
| Length | 1 inch = 2.54 cm; 1 ft = 0.3048 m; 1 mile = 1.609 km | |
| Length (small) | 1 Å = 10⁻¹⁰ m; 1 nm = 10⁻⁹ m; 1 μm = 10⁻⁶ m | |
| Length (astronomical) | 1 AU = 1.496 × 10¹¹ m; 1 ly = 9.46 × 10¹⁵ m; 1 pc = 3.26 ly | |
| Area | 1 hectare = 10⁴ m²; 1 acre = 4047 m² | |
| Volume | 1 L = 1000 cm³ = 10⁻³ m³; 1 m³ = 1000 L | |
| Mass | 1 tonne = 1000 kg; 1 lb = 0.4536 kg; 1 u = 1.6605 × 10⁻²⁷ kg | |
| Time | 1 h = 3600 s; 1 day = 86 400 s; 1 year ≈ 3.156 × 10⁷ s | |
| Speed | 1 km/h = 5/18 m/s; 1 knot = 1.852 km/h | |
| Force | 1 kgf = 9.8 N; 1 dyne = 10⁻⁵ N | |
| Pressure | 1 atm = 1.013 × 10⁵ Pa = 760 mm Hg; 1 bar = 10⁵ Pa | |
| Energy | 1 cal = 4.186 J; 1 kWh = 3.6 × 10⁶ J; 1 eV = 1.602 × 10⁻¹⁹ J | |
| Energy (CGS) | 1 erg = 10⁻⁷ J | |
| Power | 1 hp = 746 W | |
| Temperature | K = °C + 273.15; °F = (9/5)°C + 32 | |
| Angle | π rad = 180°; 1° = 60′; 1′ = 60″ | |
| Magnetic field | 1 gauss = 10⁻⁴ T | |
| Mass–energy | 1 u = 931.5 MeV/c² |
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