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Calcimator

Cannabis Yield Estimator Calculator

Expected yield from plant count, genetics, and environment.

Inputs

Results

Estimated yield (g)

855

Estimated yield (oz)30.2
Estimated yield (lbs)1.88
Conservative estimate (g)570
Optimistic estimate (g)1,140
Grams per plant85.5
Grams per watt0.43
How to Use This Calculator
  1. Enter plant count, total light wattage (actual wall draw), and grow medium type.
  2. Set your experience level (beginner, intermediate, expert) and veg period in weeks.
  3. Review Estimated Yield (g), Conservative and Optimistic estimates, Grams per Plant, and Grams per Watt.
  4. Use the grams-per-watt metric to evaluate lighting efficiency and set improvement targets.

How the result changes with Total light wattage

Total light wattageEstimated yield (g)
100,00028,785
350,000100,035
650,000185,535
900,000256,785

What each input means

Number of plants
Total plant count in the grow.
Total light wattage
Combined wattage of all grow lights (actual wall draw).
Grow medium (0-3)
0 = Soil, 1 = Coco coir, 2 = DWC hydro, 3 = Aeroponics.
Experience level (0-2)
0 = Beginner, 1 = Intermediate, 2 = Expert.
Veg period (weeks)
Weeks of vegetative growth before flipping to flower.

What each result means

Estimated yield (g)
Average of conservative and optimistic yield estimates in grams.
Estimated yield (oz)
Estimated yield in ounces.
Estimated yield (lbs)
Estimated yield in pounds.
Conservative estimate (g)
Lower-bound estimate based on limiting factor.
Optimistic estimate (g)
Upper-bound estimate assuming ideal conditions.
Grams per plant
Average yield per plant.
Grams per watt
Light efficiency metric (higher is better).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Number of plants = 10, Total light wattage = 2000, Grow medium (0-3) = 0, Experience level (0-2) = 1 = 5 input(s) provided
  2. Calculate Estimated yield
    Estimated yield = (conservativeG + optimisticG) / 2
    855 = 855
  3. Calculate Estimated yield
    Estimated yield = estimatedG / 28.3495
    30.2 = 30.2
  4. Calculate Estimated yield
    Estimated yield = estimatedOz / 16
    1.88 = 1.88

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