Price Quantity Calculator
Compare unit prices across different package sizes to find the best deal and save money
Compare Product Prices
Option A (Smaller Package)
Option B (Larger Package)
Example Calculation
Flour Shopping Example
Option A: 1 kg for $1.00
Option B: 1.5 kg for $1.35
Unit Price Calculation
Option A: $1.00 ÷ 1 kg = $1.00/kg
Option B: $1.35 ÷ 1.5 kg = $0.90/kg
Result: Option B is better - saves $0.15 (15¢ per kg)
Smart Shopping Tip
The larger package costs 90¢ per kg vs $1.00 per kg for the smaller package. By choosing the larger package, you save 10¢ per kg (10% savings).
Smart Shopping Tips
Compare Unit Prices
Always calculate price per unit to find the real value.
Consider Storage
Don't buy more than you can store or use before expiry.
Check Quality
Ensure the quality is the same between different sizes.
Bulk Benefits
Larger packages often offer better value but require higher upfront cost.
Common Conversions
1 kg = 1000 g = 2.2 lb
1 L = 1000 mL = 33.8 fl oz
1 lb = 16 oz = 453.6 g
Use same units for accurate comparison
Understanding Unit Price Comparison
What is Unit Price?
Unit price is the cost per unit of measurement (per kilogram, per liter, per piece, etc.). It allows you to compare products of different sizes on an equal basis to determine which offers better value for money.
Why Compare Unit Prices?
- •Find the best value for your money
- •Make informed purchasing decisions
- •Save money on regular purchases
- •Compare products of different brands and sizes
Unit Price Formula
Unit Price = Total Price ÷ Quantity
Simply divide the total price by the quantity to get the price per unit. The product with the lower unit price offers better value.
Pro Tip: Consider factors beyond just unit price, such as storage space, product shelf life, and your actual consumption rate before making bulk purchases.
When Larger Isn't Always Better
Storage Limitations
Consider if you have adequate storage space for larger quantities.
Expiry Dates
Ensure you can consume perishable items before they expire.
Cash Flow
Consider the upfront cost and your current budget constraints.