Free grow tools
Calculators
Smart, simple tools to help you plan your setup, dial in your environment and stay on top of costs.
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Grow LightMatch wattage, PPFD & coverage to your space.Open calculator →
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VentilationSize your extraction fan for the right airflow.Open calculator →
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VPDDial in temperature & humidity for healthy growth.Open calculator →
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DehumidifierFind the litres-per-day capacity you need.Open calculator →
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Heating & CoolingSize climate gear to your room & target temp.Open calculator →
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CO₂ EnrichmentWork out dosing to hit your target ppm.Open calculator →
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Nutrient ProgramBuild & download accurate feed schedules.Open calculator →
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SubstrateCalculate how much growing media you need.Open calculator →
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Nutrient CostEstimate nutrient cost per litre & total.Open calculator →
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Water CostWork out water cost per litre & total spend.Open calculator →
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Electricity CostSee kWh & dollar cost from day to year.Open calculator →
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Harvest CostKnow your true cost per gram, oz & kilo.Open calculator →
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Grow ROIWeigh running costs against yield value.Open calculator →
