30 mL bottle planner
How long will your CBD oil bottle last?
All three bottles hold 30 mL. Enter the volume you already use per day to compare how long each lasts and how much a day costs.
CALCULATE MY BOTTLE
Plan one bottle
Use the daily volume from your own routine or package. Bottle strength changes the CBD per mL. Bottle volume determines the days of supply.
Enter milliliters (mL), the volume marked on a dropper. This calculator keeps the number in this browser tab.
Enter a positive volume in milliliters.
Days per 30 mL bottle
Enter your volumeDivide 30 mL by your daily volume to find your supply.
Compare your cost per day
One bottle at its current displayed price, before shipping or cart discounts. Each estimate uses the unrounded days of supply.
How the numbers work
Days of supply = 30 mL ÷ daily mL. For example, using 0.5 mL a day gives 60 days. This is an arithmetic example.
Cost per day = bottle price × daily mL ÷ 30 mL. A fractional result means the bottle covers part of the final day. Displayed costs are rounded to the nearest cent.
For storage and expiry dates, read the bottle storage guide. To compare prices per 100 mg of CBD, see the CBD oil price guide.
Explore the three bottles
Each USA Medical bottle contains 30 mL. The milligrams on the front refer to the total CBD in the bottle. Open a product to check its label, price and availability.
