Discount Calculator

Calculate the final price after discount. Supports quick percentage buttons and double discounts.

Original Price ($)

Discount (%)

Additional Discount (%, optional)

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How to Calculate Discounts

To calculate a discount: Discounted Price = Original Price × (1 - Discount/100). For example, a $100 item at 25% off costs $100 × 0.75 = $75. You save $25.

Double Discounts

Double discounts apply sequentially. A 20% off + 10% off is NOT 30% off total. Instead, the second discount applies to the already-discounted price: $100 × 0.80 × 0.90 = $72 (effectively 28% off, not 30%).

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