Evapotranspiration (ET) Calculator
Estimate water loss from soil evaporation and plant transpiration
Penman-Monteith
Hargreaves
Estimated Evapotranspiration
4.8
mm/day
48
m³/ha/day
33.6
mm/week
144
mm/month
Water Management Recommendations
Irrigation needs: Moderate
Suggested water amount: 4-5 mm/day
Frequency: Every 2-3 days depending on soil type
Conservation: Consider mulching to reduce soil evaporation
Seasonal Variation
Current calculation represents summer conditions.
Expected seasonal ET variation:
- Spring: ~3.5 mm/day
- Summer: ~4.8 mm/day
- Fall: ~2.2 mm/day
- Winter: ~1.0 mm/day
This calculator provides estimates based on standard equations. For precise irrigation planning, consider local climate data and specific crop coefficients.