Unit Price Comparison Calculator
Supermarkets love keeping you in the dark about actual unit prices. This calculator directly compares what you pay per unit for two packages — so you see the real deal without marketing tricks.
結果
20% goedkoper
Product 2 is better
- Product 1 per unit
- ￥0.05
- Product 2 per unit
- ￥0.04
How this was calculated
- 1Product 1 unit price￥5 ÷ 100 = ￥0.05
- 2Product 2 unit price￥8 ÷ 200 = ￥0.04
公式
Unit price = Total price ÷ Quantity. Compare both unit prices for the best value.
Real value doesn't depend on package size — it's about how much you pay per unit. By calculating both unit prices you instantly see which size offers the best deal. Bigger packages aren't always cheaper!
ステップ解説
- 1Enter the price of product 1 and its quantity.
- 2Enter the price of product 2 and its quantity.
- 3The calculator computes both unit prices for you.
- 4Compare and instantly see which product offers the best value.
計算例
2L milk: EUR 2.50 vs 1L milk: EUR 1.50
→ 2L: EUR 1.25/L (better!) vs 1L: EUR 1.50/L. Savings: 16.7%
Cereal box 375g: EUR 3.99 vs bulk 1kg: EUR 9.50
→ Box: EUR 10.64/kg vs bulk: EUR 9.50/kg. Bulk is better: 10.7% cheaper
Peanut butter 500g: EUR 4.20 vs 1kg: EUR 7.50
→ 500g: EUR 8.40/kg (more expensive!) vs 1kg: EUR 7.50/kg. 1kg is 10.7% cheaper
Reference table
| Product category | Small package | Large package | Advantage |
|---|---|---|---|
| Milk | EUR 1.50/L | EUR 1.25/L | 16.7% savings |
| Cereal | EUR 10.64/kg | EUR 9.50/kg | 10.7% savings |
| Peanut butter | EUR 8.40/kg | EUR 7.50/kg | 10.7% savings |
Unit price varies depending on package size — always compare!
よくある間違い
- Assuming "bulk" is always cheaper — not always true, many stores use confusing pricing.
- Not calculating the unit price — and losing money to visually appealing packaging.
- Not verifying quantities — stores use different units to make comparison impossible.
活用シーン
- Shopping cart comparison — see which brands and sizes truly offer better value.
- Brand comparison — determine if the pricier option truly offers better quality.
- Budget planning — know how much you can save by choosing smarter.
よくある質問
Why is the larger/smaller package more expensive per unit?
Various reasons: higher transport costs, premium pricing, brand imaging, or because the smaller package is subsidized. Always verify!
How can I compare unit prices for different units (kg vs liters)?
Convert everything to the same unit first (e.g. all to kg). Weigh products or check packaging info, calculate price per kg/L. This calculator does it automatically!
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