Free cannabis tools, no catch
Genuinely useful, free, and honest. No sign-up, no upsell, just tools we wish existed when we were figuring this out. Share them anywhere they help someone.
Edible Dosing Calculator
How much THC should you take? Tell it your tolerance and your goal, get a sensible starting dose in milligrams, with onset, duration, and safety built in.
Open the toolDrug testsHow Long Does Weed Stay in Your System?
An honest detection-window estimator by test type and how often you use, plus the real factors that change it and why there's no overnight flush.
Open the toolTimingHow Long Does a Weed High Last?
An honest onset, peak, and total-duration estimator by method — smoking, vaping, dabs, edibles, tinctures — plus how long to wait before driving.
Open the toolEdiblesCannabutter & Edible Potency Calculator
Work out the milligrams of THC per serving in homemade edibles — plus the full maker's guide: decarb temps, infusion efficiency, dosing, and storage.
Open the toolReference & Data
More on the way. Want the reading instead? Browse the Journal.