Evapotranspiration Rate Calculator

Estimate daily evapotranspiration rate for irrigation planning using temperature, humidity, wind speed, and solar radiation data.

Average Temperature (°F)

Relative Humidity (%)

Wind Speed (mph)

Daily Sunshine Hours

Crop Coefficient (Kc)

Formula

ETo = (0.408 x Solar Radiation + 0.063 x (Temp+273) x Wind x VPD) / (1 + 0.34 x Wind); ETc = ETo x Crop Coefficient; VPD = Saturation VP - Actual VP

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