Interactive vapor pressure deficit chart/calculator for horticulture, with dew point. Cannabis, tomatoes, leafy greens, cucumber. Democratization of VPD.

Or simply, use the VPD chart and calculator. You need a thermometer/hygrometer to measure the grow room temperature, RH and ideally an infrared thermometer , so you can measure the canopy temperature.

In case you need any support, our team is here to help you with vpdchart.com and VPD Chart iOS app.

Define an unlimited number of charts; Full support for bluetooth sensors; Toggle on/off chart zones