Grow calculators
Free calculators for your grow
VPD, light, nutrient solution, electricity costs, pot size and units – runs entirely in your browser, no sign-up. In the growlog the same tools calculate with your own data.
Plant checkUpload a photo, get an AI assessment of your cannabis plant – free, no accountVPD calculatorVapour pressure deficit from temperature and humidityLight & DLIPPFD, light hours, DLI and lux approximationEC ↔ ppm & dilutionConvert conductivity to ppm, dilute nutrient solutionPot & substratePot volume, substrate needed, watering amountElectricity costskWh and cost per stage, total and per monthUnits°F ↔ °C, gal ↔ L, inch ↔ cm, oz ↔ g, ft² ↔ m²