Per-Unit Price Comparison Calculator
Is the 750 g box at $4.29 cheaper than the 1.2 kg bag at $6.49? Add each option with its price and size, even in different units, and Toolra ranks them by true unit price.
Products
Comparison
Big bag
$19.50 for 1 kg
$1.95 / 100 g
Best value
Small bag
$8.99 for 12 oz
$2.6426 / 100 g
35.5% more expensive
How to use the Per-Unit Price Calculator
- 1
Add two or more products.
- 2
Enter price, size and unit.
- 3
See the cheapest option and how much you save.
Helpful examples
- Coffee: 12 oz for $8.99 vs 1 kg for $19.50
- Detergent: 1.5 L for $7.20 vs 64 fl oz for $10.99
- Batteries: 8-pack for $6.49 vs 24-pack for $16.99
Mixing units
Weights are converted to grams, volumes to milliliters and counts stay as items, so you can compare ounces with kilograms or fluid ounces with liters fairly.
How savings are shown
Toolra shows each option's price per 100 g, 100 ml or per item, highlights the best value and shows how much more expensive every other option is in percent.
Frequently asked questions
Can I compare weight with volume?
No, that would need the product's density. Compare weight with weight, or volume with volume.
Are US fluid ounces used?
Yes, 1 fl oz = 29.5735 ml. Weight ounces are 28.3495 g.
How many products can I compare?
Up to 8 at once.