Cost Per Fluid Ounce Calculator
Compare drinks, refill packs, bottles, cans, and other liquid products by cost per fluid ounce, including sale and multi-buy offers.
Choose a deal only if the shelf tag changes the price.
Use the final shelf offer, like 2 for $5.
Recent comparison
How to use this cost per fluid ounce calculator
- Enter the liquid product price or choose a deal type.
- Enter the pack count and volume per bottle, can, or refill.
- Add another option to compare the cost per fluid ounce and find the better value.
Cost per fluid ounce formula
price after deal / total fluid ounces = cost per fluid ounce
Use total liquid volume when comparing drinks, bottles, cans, refill packs, and multipacks.
Evergreen example
Product A costs $5 for 64 fluid ounces. Product B costs $8 for 120 fluid ounces. Product A is about $0.078 per fluid ounce, while Product B is about $0.067 per fluid ounce, so Product B is cheaper by liquid volume.
What can mislead you
- Bottle size: compare the actual volume, not just bottle count.
- Can count: a larger pack is not always cheaper per fluid ounce.
- Concentrate: compare the amount you will actually use.
- Refill packs: refill packaging can still cost more per fluid ounce.
- Multipacks: count total volume across the full bundle.