Grower tools
Run the numbers before you change the room.
Practical calculators for lighting, environment, utilities, and retrofit planning. These are decision aids—not replacements for measured room data or licensed design work.
DLI + PPFD Calculator
Convert between canopy PPFD, daily light hours, and Daily Light Integral using any two known values.
- Solve for DLI, PPFD, or photoperiod
- Use measured canopy PPFD when available
Electricity Cost Calculator
Estimate equipment energy use, crop-cycle cost, and electricity cost per dry pound.
- Separate wattage, quantity, runtime, and duty cycle
- Dry harvest weight is optional
VPD, Leaf VPD + Dew Point
Use air temperature, humidity, and measured leaf temperature to calculate air VPD, leaf VPD, and condensation margin.
- Measured leaf temperature, not a fixed offset
- Includes dew point and leaf-to-dew-point margin
Dehumidifier Sizing
Estimate daily water removal, peak load, required capacity, and optional electricity cost per dry pound.
- Water-balance or measured-load input
- Uses actual power and runtime for cost
HVAC + Dehumidification
Separate sensible and latent loads, check integrated or standalone moisture capacity, and estimate power cost per dry pound.
- Handles hot-gas reheat without double-counting it
- Reports BTU/h, tons, moisture shortfall, and kW
CO₂ Use + Cost
Estimate initial fill, ongoing use, tank-equivalents, and optional CO₂ cost per dry pound.
- Uses room volume, ppm, and leakage
- Compares use with dry output from the same period
Circuit + Fixture Count
Plan fixture current and maximum count from actual watts, voltage, power factor, breaker rating, and an editable load allowance.
- Nameplate-current override included
- Explicit local-code and electrician warning
Retrofit Cost per Pound + Payback
Compare annual operating cost, all-in cost per dry pound, savings, payback, and return over a chosen period.
- No invented yield increase
- Optional fixture and canopy photon costs
Advanced Grow Light Layout
Still separate while its spatial model is rebuilt around measured maps, fixture dimensions, real boundaries, overlap, and odd-shaped rooms.
- A fixture PPF number is not treated as canopy PPFD
- No unverified layout recommendations
Need a calculator that is not here?
Tell us what you are trying to size or compare, which inputs you actually have, and what result would help you make the decision.
Measured canopy data, equipment nameplates, utility tariffs, and commissioned environmental data remain authoritative.