howmanysales.

Contribution margin and profit calculator

01 / YOUR INPUTS
Product, payment fees, shipping and other per-sale costs.
Costs for the same period as your goal.

Use the same month for your goal and costs. Changing period relabels; it does not convert inputs. Use consistent tax-exclusive amounts. Currency changes formatting, not exchange rates. Inputs reset when you leave or reload this page.

02 / YOUR PLANLive calculation

Total contribution

$6,000.00

for your month

Contribution / unit$30.00
Contribution margin60%
Operating profit / loss$5,000.00

Contribution subtracts all costs that vary with sales, including variable delivery, fees and acquisition costs. It then covers fixed overhead. Negative contribution means each additional unit increases the loss. This model assumes one product or a stable average sales mix.

No sign-up. No financial inputs sent to a server.

Planning estimates. Use consistent tax-exclusive inputs. See the formula and assumptions