9% Off $31
9% discount on $31: You save $2.79. Sale price: $28.21. Free discount calculator.
Discount = $31 x (9/100) = $2.79. Sale price = $31 - $2.79 = $28.21.
How This Was Calculated
Percentage Discount:Sale Price = Original Price - (Original Price x Discount%)
Fixed Amount Discount:Sale Price = Original Price - Discount Amount
Reverse Original Price:Original Price = Sale Price / (1 - Discount%)
Savings Percentage:Savings% = (Discount Amount / Original Price) x 100
Quick Reference Table
| Input | Result |
|---|---|
| 31 / 4 | $29.76 |
| 31 / 7 | $28.83 |
| 31 / 8 | $28.52 |
| 31 / 10 | $27.90 |
| 31 / 11 | $27.59 |
| 31 / 14 | $26.66 |
Frequently Asked Questions
How do I calculate a 20% discount?
Multiply the original price by 0.20 to get the discount amount, then subtract from the original price. For example, 20% off $100 = $20 discount, sale price = $80.
What is the difference between discount and markup?
A discount reduces the price from the original. A markup increases the price above the cost. Discount is customer-facing; markup is business-facing.
Can I stack multiple discounts?
Yes, but be careful. A 20% discount followed by a 10% discount is NOT 30% off. It is 20% off, then 10% off the reduced price. Use the reverse calculator to find the original price after stacked discounts.