Free Business Calculators for Ecommerce and SaaS

Find how many units you need to sell each month to cover fixed costs, with payment fees, refunds and chargebacks included in the contribution margin.

Divide customers lost by customers at the start of the period to get churn, retention, annualized churn and implied customer lifespan, plus how many left through a chargeback.

Divide conversions by visitors to get your conversion rate, compare it with benchmarks, and see the net rate after refunds and chargebacks take orders back.

Calculate your monthly card processing cost, compare nine processors on your real volume, and check what a surcharge would net you.

Divide sales and marketing spend by new customers to get CAC, then see payback months and LTV:CAC, net of refunds and chargebacks.

Calculate LTV for an ecommerce or subscription business, compare it with CAC, and see the chargeback-adjusted LTV that reflects revenue you actually keep.

Add up listing, transaction, payment processing and Offsite Ads fees on any Etsy sale, see your profit, or work backwards to the price that hits your target.

Set a markup on your cost and see the selling price, gross margin and the profit you keep after fees, refunds and chargebacks.

Search merchant category codes by number or business type, and see which ones the card networks treat as high risk or watch for disputes.

Enter revenue, cost of goods and operating expenses to get net profit and net margin, with payment fees, refunds and chargebacks broken out as their own lines.

See how many months an investment takes to pay for itself from monthly net cash inflow, simple or discounted, with payment leakage included when you model it from unit sales.

See exactly what PayPal takes from any payment, what you keep, and what a refund or dispute would cost you on top.

Enter your cost and price to see gross margin, markup and profit per unit, then add fees, refunds and chargebacks to see the margin you actually keep.

Build a plain-language refund policy for your store, digital products, subscription or services, written to prevent the disputes that policies usually cause.

Divide ad revenue by ad spend to get ROAS, find your break-even ROAS from gross margin, and see net ROAS after refunds and chargebacks take orders back.

Work out Square's fee for any in-person, online, keyed or invoice payment, and the price to charge to net a target amount.