Discount Stack Savings Calculator
Combine two discounts and see the real total off.
Enter your values
Enter the original price in $.
Enter the first discount in %.
Enter the second discount in %.
Results update instantly as you type — no submit needed. Your values are remembered on this device, and the shareable link reopens the calculator with exactly these numbers.
- Final price
- $72
- Combined discount
- 28%
- Total saved
- $28
- Naive sum (wrong)
- 30%
Quick answer
Stacked discounts multiply, so two 20% discounts give 36% off total, not 40%.
final price = price x (1 - d1) x (1 - d2)
At a glance
| What it does | Combine two discounts and see the real total off. |
|---|---|
| Category | Business |
| Inputs needed | Original price, First discount, Second discount |
| Main output | Final price |
| Formula | final price = price x (1 - d1) x (1 - d2) |
| Cost | Free — no sign-up, no download |
How to use the Discount Stack Savings Calculator
- 1Enter the original price before any discount.
- 2Enter both discount percentages in the order they are applied.
- 3The combined discount is always less than simply adding the two percentages.
Inputs explained
- Original price($)
- Enter the original price in $.
- First discount(%)
- Enter the first discount in %.
- Second discount(%)
- Enter the second discount in %.
Worked example
Using the values the calculator loads with:
Inputs
- Original price100 $
- First discount20 %
- Second discount10 %
Results
- Final price$72
- Combined discount28%
- Total saved$28
- Naive sum (wrong)30%
Frequently asked questions
Does order matter?
No — multiplying two percentage discounts gives the same result regardless of order.
Can I stack three discounts?
Yes, keep multiplying by (1 - each discount) in sequence.
What do I need to enter into the Discount Stack Savings Calculator?
Just 3 values: original price, first discount, second discount. Every field starts with a realistic example, so you can change one number at a time and watch the result update instantly.
How does the Discount Stack Savings Calculator work out the answer?
Stacked discounts multiply, so two 20% discounts give 36% off total, not 40%. It applies the formula final price = price x (1 - d1) x (1 - d2) and shows the working so you can check each step by hand.
Is the Discount Stack Savings Calculator free, and do I need an account?
It is completely free with no sign-up, no download and no usage limit. Everything is calculated in your browser, so the numbers you type never leave your device.
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.