Inch of Water (in)
Water · Imperial
Main conversion
1 in = 25.4 mm (254 m³/ha)
Description and history
The inch of water (symbol in) is the Anglo-Saxon unit for rainfall and irrigation: 1 in equals exactly 25.4 mm.
It is the standard of US weather reports and irrigation systems.
Reference conversions
| Unit | Equals |
|---|---|
| Millimeter of Water (mm) | 1 in = 25.4 mm |
| Centimeter of Water (cm) | 1 in = 2.54 cm |
| Cubic Meter per Hectare (m³/ha) | 1 in = 254 m³/ha |
| Liter per Square Meter (L/m²) | 1 in = 25.4 L/m² |
| Liter per Hectare (L/ha) | 1 in = 254,000 L/ha |
