Unit Price Calculator
Compare two products by cost per unit to find the better deal.
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Product A
Product B
Result
About Unit Price Calculator
This unit price calculator compares two products by cost per unit so you can see which one gives better value for the same type of item.
It is useful for grocery shopping, bulk-pack comparisons and product size decisions where the cheaper sticker price does not always mean the better deal.
Common Unit Conversions
| From | To | Multiplier |
|---|---|---|
| 1 lb | 453.59 g | 453.59 |
| 1 oz | 28.35 g | 28.35 |
| 1 kg | 2.205 lb | 2.205 |
| 1 gal (US) | 3.785 L | 3.785 |
| 1 fl oz (US) | 29.57 ml | 29.57 |
Frequently Asked Questions
- How do I calculate unit price manually?
- Divide price by quantity. Example: $5.99 for 500g means 5.99 / 500 = $0.01198 per gram, or about $11.98 per kg.
- Should I compare by weight or volume?
- Compare like with like: weight for solids, volume for liquids. Convert both products to the same unit before deciding.
- Does bulk always mean better value?
- No. Bulk packs are often cheaper per unit, but promotions and brand pricing can flip the result. Always check the unit price.
- How do I handle different unit sizes?
- Convert both items to one base unit first, such as grams or liters. Then compare price per unit on the same scale.
- What if the products have different quality?
- Unit price only measures cost. You should still consider quality, shelf life, and whether you'll actually use the larger pack.
- Is unit price useful for non-food items?
- Yes. It also works well for batteries, paper, detergent, cables, and other products sold in different pack sizes.