Free Cannabis Growing Tools & Calculators
Everything you need to grow better cannabis, all in one place. These free interactive tools help you dial in your grow environment, estimate yields, plan a feeding schedule, and calculate costs — no sign-up required.
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Growing Tools
Yield Calculator
Estimate your harvest weight based on grow space, lighting, and plant count.
Grow Light Calculator
Calculate the DLI and PPFD your plants need and find the right light intensity for every growth stage.
Nutrient Deficiency Identifier
Select your plant's symptoms and get a likely diagnosis with corrective steps.
Dry & Cure Timer
Set up a drying and curing countdown so you never rush or forget a jar burp.
Grow Schedule Planner
Generate a week-by-week grow timeline from germination through harvest for any strain.
Info & Planning
Track Your Results with Grow Guide
Get AI plant diagnostics, grow journals, yield tracking, and personalized recommendations — all free.