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Free Tools & Calculators for Small Business

Handy, no-signup tools for busy business owners β€” generate documents, run the numbers, and build tracking links right in your browser. Nothing you enter is uploaded anywhere.

These free tools are built by StandupCRM, the CRM and Google Ads platform for device-repair shops. Each one runs entirely client-side β€” no account, no watermark, no catch. Use them to send a quick invoice, check your margins before you quote, work out sales tax both ways, or tag a campaign link so you know which ads bring paying customers. New tools are added regularly.

Documents

Calculators

Free Sales Tax Calculator

Add sales tax to a price, or work backwards from a tax-included total β€” instantly, with any rate.

Free Markup & Margin Calculator

Turn cost into price and see your margin β€” or enter a price and see the markup. Both directions, instantly.

Free Break-Even Calculator

Find out exactly how many units β€” and how much revenue β€” you need to cover your costs and start making a profit.

Free ROI Calculator

See the return on any investment as a clear percentage and dollar profit β€” plus an annualized rate if you enter a time period.

Free Discount Calculator

Work out the sale price and how much a customer saves β€” including two stacked discounts β€” instantly.

Free Customer Acquisition Cost Calculator

Find out what it really costs you to win one customer β€” and whether that’s sustainable against their lifetime value.

Free Customer Lifetime Value Calculator

Estimate how much revenue an average customer brings over the whole time they stay with you.

Free Freelance Hourly Rate Calculator

Work out the hourly rate you actually need to charge to hit your income goal after expenses, tax and time off.

Free VAT Calculator

Add VAT to a net amount, or strip VAT out of a gross (VAT-inclusive) amount β€” at any rate, instantly.

Free Overtime Pay Calculator

Work out regular pay, overtime pay and total for a pay period at any overtime multiplier.

Free Net Pay Calculator

Estimate take-home pay from gross by subtracting a tax percentage and any fixed deductions.

Free Cash Flow Calculator

Add up money in and money out to see your net cash flow and closing balance for the period.

PDF & Files

Marketing

Want these built into your workflow?

StandupCRM turns clicks into customers for repair shops β€” landing pages, lead capture, and a full CRM dashboard.

See a live demo β†’