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$80.00
Sale Price
$20.00 savings
20%
Discount
$100
Original
You save $20.00. Final price: $80.00
$75.00
Sale Price
$25.00 savings
25%
Equivalent Discount
You save $25.00. Final price: $75.00
$72.00
Final Price
$28.00 total savings
28%
Total Discount
$80.00
After 1st Discount
20% off = $80, then 10% off = $72 final. Total 28% off.
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No history yet. Save a calculation to get started.
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Discount Calculator: The Ultimate Guide to Saving Money
Welcome to the Discount Calculator — the most comprehensive discount tool on the internet. Whether you're shopping Black Friday sales, using a coupon code, comparing deals, or running a business promotion, this calculator helps you understand exactly how much you'll pay and how much you'll save.
📊
Percent Off
Calculate percentage discounts instantly
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Fixed Amount Off
Calculate dollar-amount discounts
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Multiple Discounts
Stackable discounts (extra 10% off sale)
⚡
Instant Savings
See exactly how much you save
💾
Save History
Never lose your calculations
📎
Export Reports
Download CSV/JSON files
🎓 Pro Tip: For quick mental math: 10% off = move decimal left once. 20% off = double that. 15% off = 10% + 5%. For $50: 10% = $5, 20% = $10, 15% = $7.50 savings.
How to Calculate Discounts
Percentage Discount Formula
Sale Price = Original Price × (1 - Discount % ÷ 100)
Example: $100 item at 20% off = $100 × 0.80 = $80
Savings = Original Price × (Discount % ÷ 100)
Example: $100 × 0.20 = $20 savings
Fixed Amount Discount Formula
Sale Price = Original Price - Discount Amount
Example: $100 - $25 = $75
Multiple Discounts Formula
Apply sequentially: First discount, then second discount on the new price.
Example: $100 with 20% off = $80, then additional 10% off = $80 × 0.90 = $72
Important: Two 20% discounts = 36% off total, NOT 40% off.
Common Discount Examples
Original Price
10% Off
15% Off
20% Off
25% Off
30% Off
50% Off
$20
$18
$17
$16
$15
$14
$10
$50
$45
$42.50
$40
$37.50
$35
$25
$100
$90
$85
$80
$75
$70
$50
$200
$180
$170
$160
$150
$140
$100
$500
$450
$425
$400
$375
$350
$250
Discount Scenarios Explained
Black Friday & Cyber Monday
Biggest discounts of the year (often 30-50% off). Stacking codes may be limited. Doorbusters are limited quantity. Our calculator helps you compare deals across stores.
Clearance Sales
Often "extra 20% off clearance price" — use multiple discount mode. Example: $100 clearance + 20% off clearance = final $80.
Buy One Get One (BOGO)
BOGO 50% off = 25% off total if items are equal price. BOGO free = 50% off total.
Coupon Codes
Many coupon sites show "$10 off $50" — use fixed amount mode to see if percentage or fixed is better.
Savings Tips for Smart Shoppers
Compare percentage vs fixed discount: For expensive items, percentage off usually saves more. For cheap items, fixed amount may be better.
Stack when possible: Use store coupon + manufacturer coupon + cashback app for maximum savings.
Check return policies: Discounted items may have different return windows.
Price matching: Many stores match competitor discounts — know the final price before asking.
Seasonal timing: Best discounts: January (clearance), July (summer sales), November (Black Friday).
Frequently Asked Questions
How do I calculate 20% off a price? ▼
Multiply the original price by 0.80. For $50: $50 × 0.80 = $40. Or calculate 10% ($5) and double it ($10 savings).
How do multiple discounts work? ▼
Apply discounts sequentially. 20% off $100 = $80. Then additional 10% off $80 = $72. Total discount = 28%, not 30%.
What's better: $10 off or 10% off? ▼
It depends on the price. For items under $100, $10 off is better (10% of $80 = $8). For items over $100, 10% off is better (10% of $150 = $15).
How do I calculate the original price from the sale price? ▼
Divide sale price by (1 - discount %). Example: $80 sale at 20% off = $80 ÷ 0.80 = $100 original.
Do discounts apply before or after tax? ▼
Discounts apply before tax in almost all cases. Tax is calculated on the discounted sale price.
What is a "stackable" discount? ▼
A discount that can be combined with other offers. Use our multiple discounts mode to calculate stacked savings.
How accurate is this discount calculator? ▼
100% accurate to the cent. Uses exact arithmetic for all discount types.