THC mg to Percentage Calculator
Convert between mg of THC and THC % for any sample weight — useful for reading lab results.
Edit any field — the others update automatically.
Per gram
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Per ounce (28.35 g)
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Formula: mg = weight (g) × 1000 × (THC% / 100). For edible dosing use the full edible calculator.
Example conversions
- 1 g at 18% THC = 180 mg total THC
- 1000 mg in 5 g sample = 20% THC
- 1 oz (28.35 g) at 22% = ~6,237 mg THC