Auto repair shops run on estimates, invoices, and booked bays — and the shop-management software is expensive. These free tools for auto repair shops cover the daily grind with no signup and no budget: estimate math, invoicing, booking, and shop admin in your browser.
| Task | Free tool | Why it wins |
|---|---|---|
| Estimate math | Discount Calculator | Parts and labor pricing, fast |
| Markup | Percentage Calculator | Parts markup and labor rates |
| Sales tax | Sales Tax Calculator | Job tax at any rate, any state |
| Torque/size math | Unit Converter | Metric/imperial conversions |
| Invoicing | InvoiceForge | Professional invoices, free tier, no watermark |
| Bay booking | BookEase | Booking links for service slots, free tier |
| Bank statements | BankToCSV | Statement PDF → CSV for books and parts |
| Warranty dates | Date Difference | Warranty and service intervals |
Are these auto shop tools really free? Yes — the free tiers cover daily use with no watermark.
Is customer data uploaded? No — everything runs in your browser, so job info stays on your device.
Does the CSV work with my accounting? Yes — BankToCSV output imports into QuickBooks, Xero, and spreadsheets.
What about paid upgrades? Pro plans start at $5/mo with lifetime deals and crypto payments.