Seller & Business
Seller & Business Calculators
Price products, compare marketplace fees, protect margin, and plan freelance work.
27 tools
Related growth hubs
Start with the hub when you want a decision path, not just one calculator.
Depop Fee Calculator
Depop fee calculator: the 10% selling fee plus payment processing and your net.
Gumroad Fee Calculator
Gumroad fee calculator: the 10% creator fee plus payment processing.
Mercari Fee Calculator
Mercari fee calculator: the flat 10% selling fee and your net.
Poshmark Fee Calculator
Poshmark fee calculator: selling fees and net for any sale price.
Shopify Fee Calculator
Shopify fee calculator: monthly plan plus transaction fees on your sales volume.
Square Fee Calculator
Square fee calculator: the 2.6% + 10\u00a2 card-present fee and your net.
eBay Fee Calculator
eBay fee calculator: final value fees and net proceeds for a sale including shipping.
Break-Even Units Calculator
Find break-even units instantly: calculate contribution margin, required revenue, and units needed to cover costs and target profit.
Cash-Flow Runway Calculator
Model monthly cash runway, depletion month, lowest cash, and operating break-even from editable growth assumptions.
Commission Calculator
Calculate commission on sales using flat, threshold, or progressive tier rates. See total commission and a clear tier commission breakdown.
Customer Lifetime Value Calculator
Calculate gross-contribution customer lifetime value, implied lifetime, and a planning CAC ceiling from your inputs and LTV:CAC target.
Etsy Fee & Profit Calculator
Free Etsy fee calculator: estimate listing, transaction, and payment processing fees plus profit. Enter price and costs, see net earnings and margins. Privat.
Inventory Reorder Point Calculator
Calculate your inventory reorder point: lead time demand plus safety stock, then see whether current stock means reorder now.
Marketplace Advertising Break-Even Calculator
Calculate break-even ROAS and ACOS after product cost, marketplace fees, payment fees, fulfillment, shipping, returns allowance, and target profit.
PayPal & Stripe Fee Calculator
Calculate PayPal and Stripe fees, net proceeds, or the amount to charge. Use editable presets for Stripe 2.9% + $0.30 and PayPal 3.49% + $0.49.
Percent Off Calculator
Calculate stacked percent-off discounts, apply a coupon, then add tax to see your final sale price.
Price Increase Impact Calculator
Compare revenue and contribution after a price change and expected unit-volume response.
Subscription Churn Impact Calculator
Model customer and recurring-revenue trajectory from constant churn, acquisition, ARPU, and horizon assumptions.
Amazon Seller Fees Calculator
Free Amazon seller fee calculator: estimate referral, fulfillment, storage, and FBA fees plus net profit and margin , with editable 2026 assumptions.
CPM Calculator
Calculate CPM, campaign cost, impressions, or estimated ad revenue from pageviews and RPM. Any two values solve the third.
Freelance Hourly Rate Calculator
Estimate a sustainable freelance hourly rate from income goals, expenses, taxes, and billable hours.
Invoice Generator
Create a simple invoice and download as PDF.
Invoice Late Fee Calculator
Estimate a simple or monthly-compounded late fee from invoice balance, rate, and overdue time.
Profit Margin and Markup Calculator
Calculate profit, profit margin, markup on cost, and the selling price needed for a target margin from your cost and price.
Sales Tax and VAT Calculator
Sales tax calculator that adds or removes tax or VAT using your editable rate. Get the net amount, tax amount, and gross total instantly.
Shopify Profit Calculator
Free Shopify profit calculator: estimate payment processing, product, shipping, and ad costs plus net order profit and margin , with editable 2026 assumptions.
eBay Fee and Profit Calculator
Free eBay fee calculator: estimate final value, per-order, and promoted-listing fees plus net profit and margin , with editable 2026 fee rates.