Free Cannabis Tools & Calculators
Free THC calculators and weed tools to help you dose accurately, understand your products, and have a better cannabis experience. From marijuana dosage guides to edible potency calculators — no sign-up required.
Choose a cannabis calculator or guide
THC Dosage Calculator
Get a personalised dose recommendation for flower, edibles, concentrates, or tinctures based on your tolerance, body weight, and desired effect.
Use toolEdibles Potency Calculator
Calculate the THC per serving in your homemade cannabutter, brownies, gummies, or infused oil. Uses the standard 0.88 decarboxylation factor.
Use toolTHC Detox Calculator
Estimate how long THC stays in your system for urine, blood, saliva, and hair tests. Adjusted for body type, metabolism, and usage frequency.
Use toolTime to Peak Calculator
Find out when your edible will kick in, when effects peak, and how long they last. Personalised for your dose, stomach contents, and metabolism.
Use toolTHC Microdosing Guide
Get a personalised microdosing protocol for anxiety, sleep, focus, pain, or creativity. Includes dose ranges, schedules, and method recommendations.
Use toolPsilocybin Microdosing Guide
Personalised psilocybin microdose protocol adjusted for mushroom species, goal, and experience. Covers Fadiman, Stamets Stack, and more.
Use toolWhy we built these tools
Cannabis dosing is confusing. Product labels show THC percentages but don’t tell you how many milligrams you’re actually consuming. Edibles hit differently than flower. Tolerance changes everything. We built these free cannabis calculators because we wanted straightforward answers to the questions we kept hearing from our customers.
Every tool on this page is based on published pharmacokinetic research and designed to give you practical, real-world answers — not just numbers. Whether you’re a first-time consumer figuring out your starting dose or an experienced user dialling in a microdosing protocol, there’s a tool here for you.
These tools provide estimates and general guidance, not medical advice. Individual responses to cannabis vary. Always consult a healthcare professional for medical decisions.
Ready to shop?
Now that you know your ideal dose, explore our curated selection of lab-tested cannabis — shipped discreetly across Canada.