Discount & Sale Price Calculator
Calculate final sale price and total dollar savings.
Last reviewed by the myCalculator Editorial Team
Input Parameters
Calculation Results
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Formula & How Discount & Sale Price Calculator Works
To find a sale price, multiply the original price by (1 − discount ÷ 100). A $200 jacket at 25% off is 200 × 0.75 = $150, so you save $50. Successive discounts do not add: 20% off followed by another 10% off is 0.8 × 0.9 = 0.72, a total discount of 28%, not 30%. To find the original price from a sale price, divide by (1 − discount): a $150 price after 25% off was 150 ÷ 0.75 = $200. In Australia, advertised prices must include GST, so you can compare shelf prices directly. Check the price per unit as well, because a bigger discount on a smaller pack is not always the better value.
- Enter Original List Price ($): Input your target parameter value.
- Enter Discount Percentage (%): Input your target parameter value.
- Apply Formula: Calculate using
Sale Price = Price × (1 - Discount / 100). - Review Results: View exact computed answers, metrics, and worked mathematical proofs.
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Frequently Asked Questions (FAQs)
How to calculate 30% off $100?
30% of $100 is $30 savings, so sale price is $70.
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Authoritative Standards & Verified Reference Citations
Calculations and mathematical logic on this page are grounded in published statutory rules, regulatory standards, and official government data published by the following bodies:
Open government data, scientific datums, and public sector mathematical reference datasets.
Australia's national authority on physical, chemical, and biological metric measurement standards.
Dedicated Australian home loans, borrowing capacity, mortgage repayments & refinance modeling.