18 free tools · no sign-up
Work out THC per serving, light and airflow for your grow room, plant timelines and more.
Size the room, set the light and air, and time the plants from seed to harvest.
THC per serving for homemade edibles, butter and oil. Math only, not medical advice.
Reference charts and state-by-state numbers, each with its sources.
Results are estimates. Check them against your own equipment, product labels and your state's rules.
They do the routine math for growing and cooking with cannabis: THC per serving in edibles, weight conversions, plant timelines, light levels and grow room airflow.
Each tool uses a published formula for its job (for example, DLI from PPFD and hours of light). Results are estimates and are only as good as the numbers you enter, so adjust them for your equipment, product and conditions.
Yes. The tools work for home and commercial grows. Commercial growers should check results against their equipment specifications and their state and local rules.
Yes. Every calculator and chart on this page is free to use, with no registration.
No. Each tool explains its inputs, so beginners and professionals can use them.
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