❓ How do you calculate the original price if you paid $80 after 20% off?
Divide the final price ($80) by (1 − 0.20 = 0.80). $80 / 0.80 = $100 original price.
Example Math Step: $80.00 / 0.80 = $100.00 Original List Price. (Savings = $20.00).
Original Price Calculator
Work backward to find the original list price before any percentage discount was applied.
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Discount Calculator
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Reverse Calculation Options
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FINAL RESULT SUMMARYUSD
Calculated Original Price
$100.00
Calculated Discount Percentage
20.00% OFF
Reverse Formula
Original = Final Paid / (1 - Discount%)Step 1: Convert Discount % to Decimal
100% − 20% = 0.80 factor
Step 2: Calculate Original List Price
$80.00 ÷ 0.80 = $100.00
Original Price Result:$100.00
The Three Reverse Discount Formulas
1. Find Original Price from Final Price & Discount %:
Original Price = Final Price / (1 − Discount % / 100) 2. Find Discount % from Original & Final Price:
Discount % = [ (Original Price − Final Price) / Original Price ] × 100 3. Find Final Price from Original & Discount %:
Final Price = Original Price × (1 − Discount % / 100) ❓ Frequently Asked Questions
How do I find the original price after a discount? ▼
Divide the final paid price by (1 − Discount Percentage / 100). Formula: Original Price = Final Price / (1 − Discount / 100).
If an item costs $80 after 20% off, what was the original price? ▼
Divide $80 by (1 − 0.20 = 0.80). $80 / 0.80 = $100 original price.
How do I reverse a percentage discount? ▼
Subtract discount % from 100%, convert to decimal, and divide final price by that decimal. For $150 after 25% off: $150 / 0.75 = $200 original price.
What is the formula for finding the original price? ▼
Original Price = Final Paid Price / (1 − Discount % / 100).
How do I calculate the discount percentage from original and final price? ▼
Subtract final price from original price, divide by original price, and multiply by 100. Formula: Discount % = [ (Original − Final) / Original ] × 100.