Business Calculators

Sales margin and net profit, monthly break-even revenue, Korean VAT and ad profitability (ROAS), calculated in your browser. Nothing you enter is sent anywhere.

The business calculators work out the numbers you enter only inside your browser. Business details such as prices, costs and fees are never sent to a server or stored, so you can try your own figures with confidence.

The sales margin calculator takes the selling price, cost, shipping, packaging, fees and ad spend and shows the estimated net profit and margin, plus the break-even price and quantity. It calculates with whole numbers, so there are no rounding errors in won.

The monthly break-even calculator works out break-even revenue and estimated monthly profit from fixed costs and the variable cost ratio, the VAT calculator converts between net amounts and VAT-inclusive totals in both directions, and the ad profitability (ROAS) calculator works out ROAS, ad profit and break-even ROAS from ad spend and ad-driven revenue.

You have to check platform fee rates and taxes yourself and enter them. The calculator is a simple calculation based on the values you enter and may differ from the actual settlement.