Unit Price Calculator
Compare unit prices to find the best value. Calculate price per ounce, pound, liter, or any unit for groceries, products, and bulk purchases.
💰 Shopping📐 Unit Price = Total Price / Quantity
Price of Item 1 ($)
Quantity (oz, lbs, units)
Price of Item 2 ($)
Quantity of Item 2
Please enter valid values.
Formula & Reference
| Variable | Formula | Units |
|---|---|---|
| Unit Price Calculator | Unit Price = Total Price / Quantity | $/unit |
Step-by-Step Examples
Example 1
Pasta Comparison
$3.99 for 16 oz vs $5.49 for 24 oz.
- $3.99/16 = $0.2494/oz
- $5.49/24 = $0.2288/oz
- 24-oz package is better value by $0.0206/oz
✓ $5.49/24oz is better value
Example 2
Cereal
$4.50/12 oz vs $7.99/24 oz.
- $4.50/12 = $0.3750/oz
- $7.99/24 = $0.3329/oz
- Larger box is cheaper per oz
✓ Bigger box wins
Example 3
Bulk vs Single
$12/100 count vs $0.25/single.
- Bulk: $0.12 each
- Single: $0.25 each
- Bulk saves 52%
✓ Bulk is half the price
Real-World Applications
Shoppers
Find the true best value when comparing different sizes.
Grocery Buyers
Compare store brand vs name brand per unit.
Bulk Buyers
Verify bulk value at Costco and Sam's Club.
Budget Shoppers
Maximize your grocery budget with unit price comparison.
Common Mistakes to Avoid
⚠️
Assuming bigger is always cheaper
Bulk is usually cheaper per unit but not always. Especially for perishables, a unit price calculation may show the smaller size is actually a better deal for your usage.
⚠️
Not considering waste for perishables
Buying 5 lbs of produce at a lower unit price but wasting 2 lbs is actually more expensive than buying 2 lbs at a higher price. Factor in realistic usage when buying bulk perishables.
⚠️
Forgetting to compare same units
Compare oz to oz, not oz to grams or pounds. Convert to the same unit before comparing.
Frequently Asked Questions
How to calculate unit price? ▾
Divide the price by the quantity in consistent units. $3.99 / 16 oz = $0.249/oz. $5.49 / 24 oz = $0.229/oz. Lower price per unit = better value.
Are unit prices shown in grocery stores? ▾
Yes, by law in many US states and countries. Look for the small shelf tag below the product showing price per ounce or pound. Some stores use per 100g (metric countries).
Is Costco always a better deal? ▾
Not always. Costco excels for non-perishables and staples. For perishables, store sales can beat Costco unit prices. Always compare and consider whether you'll use the full bulk quantity.
What is a good price per ounce for different foods? ▾
Highly variable. Examples: Peanut butter: $0.08-0.15/oz. Chicken breast: $0.25-0.40/oz raw. Pasta: $0.10-0.25/oz. Breakfast cereal: $0.20-0.45/oz. Track your reference prices and buy on sale.
Digital unit price comparison? ▾
Grocery store apps (Kroger, Walmart, Target) often show unit prices in-app. Add-ons like Flipp aggregate sales flyers. For in-store comparison, phone calculators work perfectly.