Skuti Science Free scientific calculators & converters

Rainwater Harvesting Calculator

Volume of rainwater collected from a roof area and rainfall depth.

Results

Water collected—
Water collected—

How to use the Rainwater Harvesting Calculator

  1. Enter or select: Catchment area, Rainfall, Collection efficiency.
  2. The results (Water collected) are calculated instantly as you type.
  3. Use “Copy link” to share the calculation with the same input values.

Formula

  • V = A × rainfall × efficiency (1 mm on 1 m² = 1 L)