mg per mL (CBD Concentration)
Also known as: CBD concentration, mg/mL, CBD strength per mL
mg per mL is CBD concentration: the milligrams of CBD in each milliliter of oil, found by dividing the bottle's total CBD milligrams by its volume in milliliters, so 1,500mg in 30 mL is 50 mg per mL.
Total mg and concentration are two different numbers. Total mg is how much CBD is in the whole bottle. Concentration is how much is in each milliliter, and that is what decides how strong one dropper is. The math is total mg divided by mL. Our 1,500mg full spectrum oil is 1,500 / 30 = 50 mg per mL. The 500mg bottle is about 16.7 mg per mL, the 3,000mg is 100, and the 6,000mg is 200. A full dropper is about 1 mL, which is why we list roughly 17, 50, 100 and 200 mg per full dropper.
Two bottles can share a total and still differ. 1,500mg in 30 mL is 50 mg per mL. 1,500mg in 15 mL is 100 mg per mL, so each drop is twice as strong and the bottle runs out in half the time. The reverse also happens: a big bottle with a big total can have a modest concentration. Always read both the total mg and the bottle size. If a label gives only one of them, or lists strength per ounce, do the division yourself or move on. Concentration also tells you how many drops make a serving, so start low, go slow, and talk to your doctor if you take medication.
To compare value, divide the price by total mg. Our 500mg full spectrum is $30, about $0.06 per mg. The 1,500mg is $65, about $0.043 per mg. The 6,000mg THC-free broad spectrum is $165, about $0.0275 per mg. Bigger bottles cost less per mg, but only buy strength you will use, because a high concentration means smaller measured servings and an oil you may not finish. Price per mg also says nothing about quality, so check the batch COA to confirm the label matches the lab.
Related terms
- BioavailabilityBioavailability is the percentage of a dose that actually reaches your bloodstream. CBD's bioavailability varies dramatically by delivery method.
- COA (Certificate of Analysis)A COA is a document from an accredited third-party lab certifying what is — and isn't — in a CBD product.
- TinctureA tincture is a liquid herbal extract, traditionally made by soaking plant material in alcohol. Modern CBD 'tinctures' usually use a fat-based carrier (MCT oil) instead.
- Full Spectrum CBDFull spectrum CBD contains all cannabinoids and terpenes naturally present in the hemp plant, including up to 0.3% THC.
- Broad Spectrum CBDBroad spectrum CBD contains the full cannabinoid and terpene profile of the hemp plant with the THC removed.