Precision Cultivation Tools

Technical tools for
serious growers

8 precision calculators for hydroponic and indoor cultivation. No registration, no popups — science-backed results in seconds.

VPD Calculator

Vapor pressure deficit with interactive heatmap. Know your exact growing zone.

Convert between EC and PPM across 500, 640, and 700 scales instantly.

Daily light integral from PPFD and photoperiod. Match your crop's light targets.

Estimate light intensity from LED wattage and efficacy. No PAR meter needed.

Heat load and extraction fan sizing for any tent or room setup.

Dew point, absolute humidity, and condensation risk. Prevent mold before it starts.

Analyze nitrogen, phosphorus and potassium ratios against ideal targets by stage.

Calculate water and concentrate to add when mixing or topping off your reservoir.

All calculations run client-side. Zero latency, works offline after first load.

Every result is encoded in the URL. Copy and share your exact parameters.

Formulas from published research. Ranges curated from scientific literature and grower consensus.