Unit Price Calculator

What is the Unit Price Calculator?

Compare two products by unit price to find the better deal. Unit price shows the cost per ounce, gram or item, which reveals the cheaper option when package sizes differ.

How to use the Unit Price Calculator

1. Enter your item a price, your item a quantity, your item b price, your item b quantity.
2. Results update automatically as you type; you can also press Calculate.
3. Read the output: better deal, item a unit price, item b unit price, savings with the better deal.
4. Use the 📊 chart to see the result visually, then copy or share it.

Formula and method

Worked example

With item a price = $4.99, item a quantity = 16, item b price = $7.49, item b quantity = 28, the Unit Price Calculator returns better deal: Item B is cheaper per unit; item a unit price: $0.3119; item b unit price: $0.2675.

Where the Unit Price Calculator helps in real life

A 32-oz bottle of olive oil costs $6.40 and a 20-oz bottle costs $4.50. The calculator shows the larger bottle costs 20 cents an ounce against 22.5 cents, so it is the better value.

You are deciding whether a warehouse club’s bulk pack of paper towels is worth the membership. Comparing unit prices with your usual store shows the real savings per roll.

Common mistakes to avoid

• Comparing prices for different units, such as ounces and grams.
• Buying in bulk items you will not use before they spoil.
• Assuming the largest package is always cheapest.
• Forgetting coupons when comparing.

💡 Practical tip: Bigger packages are not always cheaper per unit — always compare before buying.

Tips for better results

• Compare the same units for both products.
• Consider how quickly you will use the product.
• Check shelf labels, which often show unit price.

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