| Discount & Sales Tax Calculator | |
| Original Price ($) | |
| Discount (%) | |
| Sales Tax Rate (%) | |
| Quantity | |
| Price Breakdown | |
| Discount Amount | -- |
| Sale Price (before tax) | -- |
| Sales Tax Amount | -- |
| Final Price (after tax) | -- |
| Total Savings | -- |
| Unit Price Comparison | |
| Product A: Price ($) | |
| Product A: Size / Quantity | |
| Product B: Price ($) | |
| Product B: Size / Quantity | |
| Unit of Measurement | |
| Product A: Price per Unit | -- |
| Product B: Price per Unit | -- |
| Better Deal | -- |
| Savings by Choosing Better Deal | -- |
A shopping calculator is a practical tool that helps you make smarter purchasing decisions. It calculates discounts, sales tax, and final prices so you know exactly what you will pay at the register. This shopping calculator also includes a unit price comparison feature to help you find the best deal when comparing products of different sizes or quantities.
The shopping calculator uses simple arithmetic to compute discounts, apply sales tax, and compare unit prices. All calculations are performed instantly as you type.
The shopping calculator first computes the discount and sale price. It then applies the sales tax rate that you select from the dropdown, which includes common US state and city tax rates. The final price is the after-tax amount multiplied by the quantity. The unit price comparison section divides each product's price by its size to determine which product offers the better value.
The shopping calculator instantly computes how much you save with a percentage-off discount. Enter the original price and the discount percentage, and the calculator shows the discount amount, the sale price, and your total savings. This works for any discount from a small markdown to a major clearance sale.
Sales tax varies significantly across the United States, from 0% in states like Delaware and Oregon to over 10% in some cities. The shopping calculator includes a dropdown with common US tax rates so you can estimate your out-the-door price accurately. This is especially useful when shopping across state lines or online.
Larger packages are not always the better deal. The shopping calculator's unit price comparison divides the price by the size or quantity to show the cost per unit. This makes it easy to compare, for example, a 16 oz package at $5.49 versus a 24 oz package at $7.99. The calculator tells you which one is cheaper and how much you save by choosing the better deal.
Multiply the original price by the discount percentage divided by 100. For example, 25% off a $79.99 item gives a discount of $79.99 × 0.25 = $20.00. The sale price is $79.99 - $20.00 = $59.99. This shopping calculator does all the math for you automatically.
Multiply the sale price by the sales tax rate. For example, a $59.99 item with 7.25% sales tax (California) has a tax of $59.99 × 0.0725 = $4.35, making the final price $64.34. This shopping calculator includes a dropdown with common US tax rates for accurate estimates.
Divide the price by the quantity or size to find the price per unit. For example, a 16 oz product at $5.49 costs $0.343 per oz while a 24 oz product at $7.99 costs $0.333 per oz. The larger package is the better deal. This shopping calculator includes a side-by-side comparison tool.
Not always. While larger packages typically offer a lower price per unit, this is not guaranteed. Stores sometimes price smaller packages more competitively during sales. The unit price comparison in this shopping calculator lets you verify which size actually offers the best value.