Price Per Ounce Calculator
Compare unit prices across package sizes.
Enter your values
Enter the product a price in $.
Enter the product a quantity in oz.
Enter the product b price in $.
Enter the product b quantity in oz.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Product A unit price
- $0.3744/oz
- Product B unit price
- $0.3389/oz
- Better deal
- Product B
- Savings choosing better deal
- $0.99 on largest size
Quick answer
Unit price is the total price divided by quantity, so lower price per ounce (or gram, litre, etc.) is the better deal.
unit price = total price / quantity
At a glance
| What it does | Compare unit prices across package sizes. |
|---|---|
| Category | Everyday |
| Inputs needed | Product A price, Product A quantity, Product B price, Product B quantity |
| Main output | Product A unit price |
| Formula | unit price = total price / quantity |
| Cost | Free — no sign-up, no download |
How to use the Price Per Ounce Calculator
- 1Enter the price and quantity for each product.
- 2The unit works for any consistent measure — ounces, grams, litres, count.
- 3Lower unit price is the better value, regardless of the total sticker price.
Inputs explained
- Product A price($)
- Enter the product a price in $.
- Product A quantity(oz)
- Enter the product a quantity in oz.
- Product B price($)
- Enter the product b price in $.
- Product B quantity(oz)
- Enter the product b quantity in oz.
Worked example
Using the values the calculator loads with:
Inputs
- Product A price5.99 $
- Product A quantity16 oz
- Product B price9.49 $
- Product B quantity28 oz
Results
- Product A unit price$0.3744/oz
- Product B unit price$0.3389/oz
- Better dealProduct B
- Savings choosing better deal$0.99 on largest size
Frequently asked questions
Why does the bigger size cost more overall but still win?
Total price includes more product; unit price normalizes for size so you compare fairly.
Does this work for count-based items?
Yes — enter number of items instead of ounces for things like paper towel sheets or diaper counts.
What do I need to enter into the Price Per Ounce Calculator?
Just 4 values: product a price, product a quantity, product b price, product b quantity. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Price Per Ounce Calculator work out the answer?
Unit price is the total price divided by quantity, so lower price per ounce (or gram, litre, etc.) is the better deal. It applies the formula unit price = total price / quantity and shows the working so you can check each step by hand.
Is the Price Per Ounce Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.