CBD tincture concentration and volume math
Convert a tincture label into CBD per mL, CBD per labeled serving, and implied servings per bottle. This calculator checks arithmetic only. It does not recommend how much CBD to take, predict effects, or determine whether a product is safe or legal.
Enter the Label Numbers
Optional. Use the serving volume printed by the seller.
Optional. Used only to compare the label’s arithmetic.
Optional. Example: a 0.5 mL mark on the supplied dropper.
What the Calculator Checks
For bottle labels, droppers and ingredient checks, read the CBD oils and tinctures guide.
- CBD concentration = total labeled CBD ÷ bottle volume.
- Implied labeled servings = bottle volume ÷ labeled serving volume.
- Calculated CBD per serving = CBD per mL × labeled serving volume.
- CBD at a marked volume = CBD per mL × the measurement volume you enter.
Arithmetic-only tool: A matching calculation does not verify the bottle’s contents or the accuracy of a laboratory report. Do not use this calculator as personal dosing advice. For package and laboratory evidence, see How to Read a CBD Label, How to Read a CBD COA, and the COA Red-Flag Checker.