Everyday
Buy One Get One Discount Calculator
Calculate the effective price and discount for a buy-one-get-one offer when the second equal-priced item is discounted.
- Free to use
- Runs in your browser
- Level A · Standard formula
- Last reviewed 2026-08-16
Calculator guide
How to use the Buy One Get One Discount Calculator
Calculate the effective price and discount for a buy-one-get-one offer when the second equal-priced item is discounted. Enter the requested values and select Calculate. The result and supporting values are produced locally in your browser.
Formula
Worked example
For two $20 items with the second item free (100% off), the pair costs $20 and the effective discount across both items is 50%.
What to keep in mind
- This assumes both items have the same regular price.
- Retailers may apply the discount to the lower-priced item when products differ.
Methodology
This calculator uses deterministic arithmetic and performs the calculation locally in your browser. Verify assumptions, units, and source values for your specific use case.
Review standard: Level A · Standard formula. How calculator reviews work.
Frequently asked questions
What does this calculator calculate?
Calculate the effective price and discount for a buy-one-get-one offer when the second equal-priced item is discounted.
How is the result calculated?
Pair Price = Item Price + Item Price × (1 − Second-Item Discount % ÷ 100).
Can I use the result for an important decision?
Use the result as a calculation aid and verify the inputs, assumptions, and applicable professional or regulatory requirements before relying on it for an important decision.
Does CalculateMeasure store the values I enter?
The calculator performs its arithmetic in your browser. The calculator itself does not need to send your entered values to a server to produce the result.