Seller & Business
Seller & Business Calculators
Price products, compare marketplace fees, protect margin, and plan freelance work.
28 tools
Related growth hubs
Start with the hub when you want a decision path, not just one calculator.
Amazon FBA Revenue Calculator
Amazon FBA calculator: compute product revenue, seller fees, and profit margin from any sale price and landed cost. Free, private, no signup, runs locally.
Depop Fee Calculator
Depop fee calculator: see the 10% selling fee, payment processing, and boosted listing costs, then your net payout per sale. Free, in your browser, no signup.
Gumroad Fee Calculator
Gumroad fee calculator shows exactly what you take home from each sale after Gumroad fees, VAT, and payouts. Editable rates, free, runs in your browser.
Mercari Fee Calculator
Mercari fee calculator: see the selling fee, payment processing fee, and your net payout for any list price. Free, private, editable rates, no signup.
Poshmark Fee Calculator
Poshmark fee calculator: see the exact seller fee, shipping, and your net profit for any sale price. Free, editable rates, no signup, runs in your browser.
Shopify Fee Calculator
Shopify fee calculator: total transaction and payment processing costs by plan, including Shopify Payments and third-party rates. Free, editable rates.
Square Fee Calculator
Square fee calculator: the 2.6% plus 10 cents card-present processing fee and your net payout for any sale amount. Editable rates, free, in your browser.
eBay Fee Calculator
eBay fee calculator: see exactly what eBay takes on a sale: final value fees, insertion fee, shipping, cost, then your real profit per listing.
Break-Even Units Calculator
Break-even units calculator: find how many units you must sell to cover fixed costs, plus required revenue and margin of safety. Free, runs locally, no signup.
Cash-Flow Runway Calculator
Cash flow runway calculator: turn burn rate and cash balance into months of runway so you know when your startup needs funding. Free, runs in your browser.
Commission Calculator
Commission calculator: break down sales commissions by flat rate, tiered thresholds, or progressive brackets. Free, private, runs in your browser, no signup.
Customer Lifetime Value Calculator
Customer lifetime value calculator: compute CLV from gross contribution, churn, and CAC, with your LTV to CAC ratio. Free, runs in your browser, no signup.
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
Reorder point calculator: combine lead time demand and safety stock to find exactly when to reorder inventory. Editable inputs, free, runs in your browser.
Marketplace Advertising Break-Even Calculator
Marketplace ad break even calculator: find break even ROAS and ACOS from product price, platform fees, and shipping costs. Free, editable rates, no signup.
PayPal & Stripe Fee Calculator
PayPal and Stripe fee calculator: reverse processing fees to find the exact amount to charge for your target payout. Editable rates, free, runs in your browser.
Percent Off Calculator
Percent off calculator: stack multiple discounts, apply a coupon, then add sales tax to see the true final price. Free, private, runs in your browser.
Price Increase Impact Calculator
Price increase calculator: model how a price rise affects demand, volume, and contribution profit so you can see the real impact before you raise. Free, private.
Subscription Churn Impact Calculator
Churn calculator: measure how subscription churn cuts monthly recurring revenue and lifetime value, and what retention gains are worth. Free, no signup.
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
CPM calculator: convert ad spend, impressions, and revenue into cost per mille and publisher RPM to price any campaign. Free, private, runs in your browser.
Freelance Hourly Rate Calculator
Freelance hourly rate calculator: set a rate covering expenses, taxes, billable hours, and target income so freelance work actually pays. Free, no signup.
Invoice Generator
Invoice generator: create professional invoices with line items, tax, and instant PDF download in minutes. Free, editable, in your browser, no signup.
Invoice Late Fee Calculator
Invoice late fee calculator: charge monthly interest or flat penalties on overdue invoices from the due date to today. Free, editable rates, no signup.
Profit Margin and Markup Calculator
Profit margin calculator and markup calculator: get margin, markup, and gross profit from cost and price, or price from target margin. Free, no signup.
Sales Tax and VAT Calculator
Sales tax and VAT calculator: add tax to a net price or run a reverse calculation to remove VAT from a total. Editable rates, private, in your browser.
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
eBay fee calculator: final value fees by category, the $0.30/$0.40 per-order fee, tiered rates above $7,500, insertion and international fees, plus net profit, margin, and break-even. 2026 rates, fully editable.