This calculator gives you a confidence-banded dose per serving — not a single suspiciously precise number. Real-world extraction efficiency varies between 60% and 90% depending on method and equipment, and we show you the whole range so you can dose with the actual margin of error in mind. Beginner-safe mode (on by default) shows the strongest likely outcome — the number that matters when you decide how much to eat.
Strong effects. Experienced users only.
Low and Slow
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One-page PDF: dose reference table, the only two equations you need, volume conversions, the five rules for first-timers, and a "why your batch failed" diagnostic on the back. Print it. Stick it on your fridge.
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Worked Examples
Brownie Batch (Standard)
7g flower at 20% THC → cannabutter (240ml) → 2 tbsp in a 12-brownie recipe
Tincture Microdose
7g flower at 20% THC → tincture (120ml ethanol) → sublingual drops
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Measurement Conversion Reference
| Measurement | Milliliters (ml) | Notes |
|---|---|---|
| 1 drop | ~0.05 ml | Standard dropper drop |
| 1 dropper (full) | ~1.0 ml | ~20 drops |
| ½ teaspoon | 2.46 ml | Common sublingual dose |
| 1 teaspoon | 4.93 ml | ~76 drops |
| 1 tablespoon | 14.79 ml | 3 teaspoons |
| ¼ cup | 60 ml | 4 tablespoons |
| ½ cup | 120 ml | 8 tablespoons |
| 1 cup | 240 ml | 16 tablespoons |
Dosage Guidelines
| Level | THC (mg) | Typical Effect |
|---|---|---|
| Microdose | 1–2.5 mg | Mild relief, focus, creativity. No impairment. |
| Low | 2.5–5 mg | Relaxation, mild euphoria. Good starting point. |
| Standard | 5–10 mg | Moderate effects. Common recreational dose. |
| Strong | 10–25 mg | Strong effects, experienced users. |
| Very Strong | 25–50+ mg | Very potent. High tolerance only. |
Understanding the Inputs
Flower Weight: The dry weight of cannabis used in your infusion, in grams.
THC / CBD Percentage: The total cannabinoid content of your flower, typically found on lab test results or dispensary labels. Average flower is 15–25% THC; CBD-dominant strains range 8–20% CBD.
Carrier Volume: The total volume of butter, oil, or alcohol used as the carrier, in milliliters. 1 cup ≈ 240ml.
Why a 60–90% Range? Real-world extraction efficiency varies. Stovetop butter typically lands at 60–75%. Slow cooker: 75–85%. Ardent FX and alcohol tinctures: 85–90%+. Showing you the full range is more honest than picking a single number and pretending it's exact.
Beginner-safe Mode: Displays the high-band number as your "dose to plan around." If your batch turned out average, you'll have eaten less than expected — which is always recoverable. The opposite isn't.
If Something Went Wrong
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