CalculynHow it works
Multiply the price by (1 − discount). Stacked discounts apply one after another, so 20% + 10% off is 28% off, not 30%.
Formula
Sale price = Price × (1 − d₁) × (1 − d₂)
Example
25% off $80 is $60 — you save $20.
Assumptions & limitations
- Results are rounded for display.
Frequently asked questions
Is 50% + 50% off free?
No. Stacked, it's 75% off: half of half.