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Calculators
Size your light and fan from the math, not the box. Results update as you type, and the URL saves your inputs so you can share them.
- Grow light calculator (PPFD, DLI, wattage)How much light your tent needs and whether a fixture covers it.
- Grow tent fan CFM calculatorExhaust CFM with carbon filter, ducting, bends and light heat.
Coming next: VPD chart, nutrient feeding calculator, dehumidifier sizing.