Free browser-based calculators for small businesses, freelancers, and ecommerce sellers.
- Pricing calculators: profit margin, markup, margin vs markup, discount, cost-plus pricing.
- Tax and fee calculators: sales tax, VAT, PayPal fee, Stripe fee, marketplace fee.
- Freelance calculators: hourly rate, project rate, billable hours, retainer fee.
- Finance and planning calculators: break-even, contribution margin, ROI, loan payment, cash flow, startup cost.
- Document tool: simple invoice generator.
- Marketplace fee calculator includes platform presets, payment fees, ads, refunds, shipping, packaging, profit margin, and break-even sale price.
- Freelance hourly rate calculator includes taxes, business expenses, benefits, retirement savings, risk buffer, and billable utilization.
- Loan payment calculator includes extra monthly payments, payoff months, interest saved, and origination fees.
- Cash flow calculator supports a 12-month forecast with lowest cash balance and runway risk.
- Startup cost calculator separates launch costs, monthly burn, runway reserve, and contingency funding.
This is a static site with no build step. It can be deployed directly to GitHub Pages.
All calculators run in the browser. Results are estimates for planning and educational use, not professional financial, tax, legal, or accounting advice.