Discount Calculator
Calculate sale prices, find original prices, or determine discount percentages. Free, instant, and no signup required.
Last updated: January 2025
Quick discount presets:
Common Discount Calculations
Quick reference table showing common discount percentages on a $100 item
| Discount | Original | You Save | Final Price |
|---|---|---|---|
| 10% off | $100 | -$10 | $90 |
| 15% off | $100 | -$15 | $85 |
| 20% off | $100 | -$20 | $80 |
| 25% off | $100 | -$25 | $75 |
| 30% off | $100 | -$30 | $70 |
| 40% off | $100 | -$40 | $60 |
| 50% off | $100 | -$50 | $50 |
| 75% off | $100 | -$75 | $25 |
How to Calculate Discounts
Choose Calculation Type
Select whether you want to find the final price, original price, or discount percentage.
Enter Your Values
Input the known values - prices and/or discount percentage.
Get Instant Results
See your complete breakdown with savings and final price instantly.
Discount Formulas Explained
Calculate Final Price
Example: $100 with 20% off = $100 × 0.80 = $80
Find Original Price
Example: $75 after 25% off = $75 ÷ 0.75 = $100
Calculate Discount %
Example: $100 to $70 = (30÷100) × 100 = 30% off
Types of Discounts for Businesses
Understanding different discount strategies helps you price products effectively
Percentage Discount
The most common type. A fixed percentage off the original price (e.g., 20% off). Works well for all price points.
Dollar Amount Discount
A fixed dollar amount off (e.g., $10 off). More effective for lower-priced items where percentages seem small.
Buy One Get One (BOGO)
Buy one item, get another free or at a discount. Effectively 50% off when buying two items.
Volume/Bulk Discount
Discounts that increase with quantity purchased. Encourages larger orders (e.g., 10% off 5+, 20% off 10+).
Seasonal/Clearance
Deep discounts (40-75% off) to clear out old inventory. Common during end-of-season sales.
Early Payment Discount
B2B discount for paying invoices early (e.g., 2/10 net 30 = 2% off if paid within 10 days).
Frequently Asked Questions
How do I calculate a discount percentage?
To calculate the discount amount, multiply the original price by the discount percentage divided by 100. For example, a 20% discount on $100 would be: $100 × (20/100) = $20 savings, making the final price $80.
What is the formula for calculating discount?
The discount formula is: Discount Amount = Original Price × (Discount Percentage ÷ 100). The final price is then: Final Price = Original Price - Discount Amount.
How do I calculate 20% off a price?
To calculate 20% off, multiply the original price by 0.20 (or divide by 5). Then subtract that amount from the original price. For example, 20% off $50 = $50 × 0.20 = $10 discount, so the final price is $40.
How do I calculate 25% off a price?
To calculate 25% off, multiply the original price by 0.25 (or divide by 4). For example, 25% off $80 = $80 × 0.25 = $20 discount, making the final price $60.
How do I calculate 30% off a price?
To calculate 30% off, multiply the original price by 0.30. For example, 30% off $150 = $150 × 0.30 = $45 discount, so the final price is $105.
How do I calculate 50% off a price?
Calculating 50% off is simple - just divide the original price by 2. For example, 50% off $200 = $200 ÷ 2 = $100 final price.
How do I find the original price from a sale price?
To find the original price, divide the sale price by (1 - discount/100). For example, if something costs $75 after a 25% discount: $75 ÷ (1 - 0.25) = $75 ÷ 0.75 = $100 original price.
How do I calculate what percent off something is?
To find the discount percentage: Subtract the sale price from the original price to get savings, divide savings by original price, then multiply by 100. Example: Original $80, Sale $60 → ($80-$60)/$80 × 100 = 25% off.
What is the difference between discount and markup?
A discount reduces the selling price from the original price, while markup increases the cost price to set a selling price. Discounts are calculated from the selling price, markups are calculated from the cost price.
How do I calculate a double discount?
For stacked discounts, apply them sequentially. For 20% off then 10% off on $100: First discount = $100 × 0.80 = $80. Second discount = $80 × 0.90 = $72. Note: This is NOT the same as 30% off ($70).
What is the difference between discount percentage and discount amount?
Discount percentage is the rate of reduction (e.g., 20% off), while discount amount is the actual dollar value saved (e.g., $20 off). The same percentage gives different amounts depending on the original price.
How do businesses decide on discount percentages?
Businesses typically consider profit margins, competitor pricing, inventory levels, and sales goals. Common promotional discounts range from 10-25%, while clearance sales may go 50-75% off to move inventory quickly.
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