Translate a chosen depth over a defined bed area into litres and arithmetic runtime. This is a unit-conversion tool—not an irrigation prescription.
Area = bed length × bed width × bed count. Volume in litres = area in m² × depth in mm. Time in minutes = litres ÷ total flow in L/min. SI conversion is exact; your measurements and chosen depth may not be.
No crop demand, rainfall, soil storage, wetted fraction, runoff, drainage, evaporation or distribution loss is estimated here. Flow is assumed constant. Do not use the output as an automatic irrigation instruction.