How do I calculate double discounts?

Multiply the discounts sequentially, not additively. A 20% off followed by a 10% coupon = 1 − (0.80 × 0.90) = 28% total discount, not 30%.

How do I find the original price from a discounted price?

Divide the sale price by (1 − discount rate). If a $60 item is 25% off, the original was 60 ÷ 0.75 = $80.

What is the difference between markup and discount?

Markup adds a percentage to cost to get the selling price. Discount removes a percentage from the selling price. They're applied to different base values.

TheCalci

Discount Calculator

Original price ($)

Discount (%)

Extra coupon / stacked discount (optional, %)

Percentage Tip VAT/GST