Free Cannabis Calculators

Accurate tools for edible dosing, growing, and more. Privacy-first, completely free, and easy to use.

Calculate THC and CBD mg per serving for homemade edibles and infusions

Tolerance Break Calculator

Determine optimal tolerance break duration based on your usage frequency

Calculate optimal time and temperature for activating THC and CBD

Calculate required wattage and PPFD coverage for your grow space

Calculate Vapor Pressure Deficit for optimal growing conditions

Calculate nutrient concentrations and EC for hydroponic systems

Track growing expenses and calculate your cost per gram and ROI

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All calculations happen in your browser. No data is stored or shared. Ever.

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Instant calculations with no server delays. Get results as you type.

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No subscriptions, no hidden fees, no accounts required. Just free tools.