Buy One Get One
Work out the effective price when a store offers a buy-one-get-one deal.
About Buy One Get One
A buy-one-get-one deal charges full price for some items and heavily discounts the others, lowering the average cost per item. Per-item cost reveals the real value of a BOGO deal, which changes based on whether you buy an odd or even number of items.
Formula
Buy One Get One
Total = full-price items + discounted second items
- free discount
- How much the second item is marked down
Worked example
With the default values below, Buy One Get One returns Total Cost of $12.00. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Item price
- 12
- Items boughtminimum 1
- 2
- Second-item discountaccepts 0–100 %
- 100 %
Results
- Total Cost
- $12.00
- Per-Item Cost
- $6.00
- Effective Discount
- 50.00%
Step by step
- 1Values used
- 2Buy One Get One
- 3Total Cost= 12.00
- 4Per-Item Cost= 6.00
- 5Effective Discount= 50.00
Assumptions and limits
- The result is derived only from the 3 inputs listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Buy One Get One calculated?
Total = full-price items + discounted second items A buy-one-get-one deal charges full price for some items and heavily discounts the others, lowering the average cost per item.
Why does Buy One Get One matter?
Per-item cost reveals the real value of a BOGO deal, which changes based on whether you buy an odd or even number of items.
What values do I need to enter?
This calculator takes 3 inputs: Item price, Items bought, Second-item discount. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.