Often listed as mg/ml (e.g. 20 mg/ml) or as a percent (2%). 10 mg/ml ≈ 1%. Adult products only — follow local law.
Strength labels describe the bottle, not how much nicotine someone absorbs. Use WINDBAR calculators for conversion and planning — not medical advice.
20 mg/ml is roughly 2% nicotine by volume.
Also called: mg/ml, nicotine %
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Related terms
Nicotine strength questions
How do I convert mg/ml to percent?
Roughly divide by ten: 20 mg/ml ≈ 2%. Use the nicotine strength calculator for dilution math, not medical dosing advice.
Is salt nicotine measured the same way?
Bottles still list mg/ml or percent. Device and coil choice changes experience — the label describes liquid concentration only.
Educational glossary for adults 21+ only. Not medical advice. Follow manufacturer instructions and local laws.