YielixPlan, Build, and Optimize Your Greenhouse Operation
Greenhouse growing starts with the conditions at crop level. Use the Greenhouse VPD Calculator to check air and leaf vapor-pressure deficit from temperature and relative humidity, and the Daily Light Integral (DLI) Calculator to turn measured canopy PPFD and lighting hours into a daily-light result. For nutrition delivery, the Fertigation Injector & Stock Tank Calculator keeps your selected nutrient, source-water assumption and injector ratio visible.
Then plan the equipment and investment around those conditions. Start with the heating cost calculator to compare covering materials and fuel types, and use the fan sizing calculator to specify ventilation that helps keep temperature and humidity in range. On the investment side, the greenhouse ROI calculator builds a year-by-year cash flow projection showing payback period and cumulative return. If you are considering supplemental CO₂, the CO₂ enrichment ROI calculator estimates the yield increase required to break even and projects the net return at your crop value per square metre.
Each tool uses its own stated inputs and method — from vapor-pressure and light calculations to U-value heat loss, injector dilution, volumetric air exchange and cash flow. Browse the task groupings below to find your starting point; they are links to calculators, not interactive charts. Then explore the full greenhouse calculator and planning-guide collection.
Common Greenhouse Tasks
Control Temperature, Humidity & Light
Check vapor pressure deficit from air or leaf temperature and humidity, then convert canopy PPFD and lighting hours into daily light integral (DLI).
Plan Fertigation & Nutrients
Mix a documented stock-tank recipe, account for known or unknown source-water nutrient contribution, and check the injector outlet concentration.
Estimate Heating Costs
Calculate seasonal heating costs from cover material U-value, glazing area, heating degree days, and fuel type. Compare single-poly, double-poly, and glass options.
Size Ventilation Systems
Determine required ventilation CFM or m³/h for your greenhouse volume and target air exchange rate. Ensure adequate cooling and humidity control.
Analyze Investment Returns
Calculate greenhouse ROI, payback period, and year-by-year cumulative cash flow. Evaluate whether CO₂ enrichment delivers a positive return at your yield levels.
All Greenhouse Calculators
Greenhouse Heating Cost Calculator
Estimate seasonal greenhouse heating costs from cover material U-value, glazing area, heating degree days, and fuel type.
Greenhouse Fan Sizing Calculator
Calculate required ventilation CFM or m³/h for your greenhouse based on volume and air exchange rate.
Greenhouse ROI Calculator
Calculate greenhouse return on investment, payback period, and year-by-year cumulative cash flow with a break-even chart.
CO2 Enrichment ROI Calculator
Calculate CO2 enrichment annual costs, break-even yield increase requirement, and net ROI range for greenhouse operations.
Greenhouse VPD Calculator
Calculate greenhouse air and leaf vapor pressure deficit (VPD) in kPa from air temperature, relative humidity and optional measured leaf temperature using the FAO-56 equation.
Fertigation Injector & Stock Tank Calculator
Calculate soluble fertilizer mass, stock concentration and selected-nutrient outlet ppm from your product analysis, source-water contribution and stock-to-final-solution injector ratio.
Daily Light Integral (DLI) Calculator
Calculate greenhouse daily light integral (DLI) in mol/m²/day from canopy PPFD, lamp hours and measured natural light, or solve the supplemental lighting hours needed to reach your target.
Greenhouse Planning Guides
Greenhouse Heating Costs: How to Estimate Your Winter Energy Bill
Learn how heating degree days, cover material U-values, and fuel type determine your greenhouse seasonal heating costs.
Is a Greenhouse Worth It? Calculating ROI and Payback Period
How to calculate greenhouse return on investment, typical payback periods by greenhouse type, and what to expect from different crop strategies.
CO2 Enrichment for Greenhouses: Costs, Benefits, and Break-Even Analysis
Why plants respond to elevated CO2, which crops benefit most, equipment options, and how to calculate your break-even yield increase.
VPD Temperature and Humidity Explained
Use air and leaf temperature with relative humidity to interpret greenhouse vapor pressure deficit, verify leaf conditions, and spot a possible condensation signal.
DLI, PPFD and Lighting Hours
Measure canopy light, convert supplemental PPFD and run time into DLI, and test whether a crop-specific target fits a practical photoperiod.
Greenhouse Fertigation Stock Tank Mixing
Calculate a selected nutrient concentration through a stock injector, document source-water assumptions, and verify the real mixture against labels and calibration.
Frequently Asked Questions
Continue Your Planning
Irrigation Calculators
Size fertigation and drip systems for greenhouse benches and beds
Crop Planning Calculators
Plan transplant production, seeding rates, and crop scheduling
Farm Economics Calculators
Compare field-crop thresholds and annual budgets with greenhouse investment payback
Pest & Spray Calculators
Manage greenhouse IPM with spray rate and compliance tools