ZapToolsDiscount Calculator
See the final sale price and your savings for any discount percentage.
Advertisement
How discounts work
Sale price = original price × (1 − discount%). A 25% discount on $100 saves you $25 — you pay $75. Stack multiple discounts by applying them one after another, not by adding percentages.
Frequently Asked Questions
How do I calculate 30% off $80?
$80 × 0.70 = $56. You save $24.
Do two 20% discounts equal 40% off?
No — sequential discounts multiply: 20% then 20% = 36% off total.
Does sales tax apply before or after discount?
After — tax is calculated on the discounted price in most places.