Hydroponics Calculators
Free hydroponics calculators for nutrient mixing, reservoir sizing, EC/PPM targets, and grow light coverage.
Tools for indoor and hydroponic growers.
Hydroponic Reservoir Top-Up Schedule Calculator
Calculate hydroponic reservoir refill and full reset schedule. Enter system size and plant uptake to get daily top-up volume and weekly EC drift expectations.
Drip Emitter Flow Rate Calculator
Calculate drip emitter count, total flow rate in GPH, and minimum pump size for hydroponic drip systems from plant count and irrigation cycle frequency.
Ebb and Flow Flood Cycle Timer Calculator
Calculate flood time and cycle count for ebb and flow hydroponics from grow media type and plant stage. Returns daily cycles for clay, rockwool, and coco.
Hydroponic Air Pump Size Calculator
Calculate the right air pump size for your hydroponic system based on reservoir volume, number of air stones, and plant count.
Hydroponic EC Mixing Calculator
Calculate nutrient concentrate to add to reach target EC (mS/cm) in hydroponics using the alligation formula for mixing two solutions of known concentration.
Hydroponic pH Adjustment Calculator
Calculate ml of pH Up or pH Down from current pH, target pH, and reservoir volume. Covers lettuce, tomatoes, and cannabis optimal pH target ranges.
Hydroponic Water Chiller Size Calculator
Calculate the right water chiller capacity for your hydroponic reservoir based on volume, ambient temperature, and target temp.
Grow Light PPFD Calculator
Calculate PPFD (light intensity) for your grow space and find the right light wattage for cannabis, vegetables, or herbs at any growth stage.
Hydroponic Nutrient Calculator
Calculate nutrient solution strength for hydroponics and soilless growing. Targets EC, PPM, and dilution ratios for all growth stages.
Hydroponic Reservoir Size Calculator
Calculate the minimum reservoir volume for your hydroponic system from plant count, growth stage, and system type. Prevent nutrient fluctuations and dry-out.