VPD Calculator

Optimize your grow room climate with Vapor Pressure Deficit

Calculate Your VPD

Air Temperature (°C)(°C)

Leaf Temperature (°C)(°C)

Relative Humidity (%)

Your VPD

1.30 kPa

Acceptable

Dew Point: 11.3°C

0.4-0.7

kPa

0.8-1.0

kPa

1.0-1.3

kPa

Vapor Pressure Deficit is the difference between moisture in the air vs moisture in the plant. It's critical for optimal growth.

VPD = SVP_leaf - (SVP_air × RH)

Optimal VPD helps plants absorb water, transport nutrients, and open stomata for CO2 uptake.

↓

VPD Too High?

Increase humidity or lower temperature

↑

VPD Too Low?

Decrease humidity or raise temperature

Explore our complete documentation for grow automation and climate control.

Use our configurator to design a complete grow room with optimal VPD management.