Free · No sign-up · Nothing stored
14 calculators for small-business decisions
Each calculator runs entirely in your browser. Nothing you type is transmitted, logged or stored, and none of them ask for an email address.
- Websites
Website Cost Estimator
Estimate a realistic build range from your page count, design approach, content readiness and features — plus the annual running cost most quotes leave out.
- Marketing
Google Ads Budget Calculator
Work backwards from average sale value, margin and close rate to the cost per click and monthly budget your business can actually sustain.
- Pricing
Profit Margin Calculator
Convert between cost, price, gross margin and markup — and see the price required to hit a target margin.
- Finance
Break-Even Calculator
Turn fixed costs, price and variable cost per sale into a monthly and weekly break-even target, with your margin of safety.
- Pricing
Hourly Rate Calculator
Set a defensible hourly rate from your target income, overheads, realistic billable hours and a profit buffer.
- Finance
Cash Flow Calculator
Project your closing cash balance month by month from opening cash, money in and money out — and see how long your balance lasts if you are burning cash.
- Marketing
ROI Calculator
Turn what you spent and what it returned into a clear return on investment, an annualised figure you can compare, and a payback period.
- Finance
Loan Payment Calculator
Work out the monthly repayment, total interest and total cost of a business loan from the amount, interest rate and term.
- Finance
Business Valuation Calculator
Estimate an indicative value range for an owner-run business from adjusted earnings and a realistic multiple, sense-checked against turnover.
- Finance
Debt Repayment Calculator
See how long a balance takes to clear at your current payment, how much interest it costs, and what overpaying each month saves you.
- Pricing
Gross Profit Calculator
Convert revenue and direct costs into gross profit and gross margin, so you can see whether the work itself is priced properly.
- Finance
Net Profit Calculator
Take revenue through direct costs, overheads and tax to an estimated net profit and net margin.
- Pricing
Markup Calculator
Apply a markup to your cost to get a selling price, and see the gross margin it actually produces.
- Finance
Revenue Growth Calculator
Measure total revenue growth between two periods, the average growth per year, and where the same rate would take you next year.
In development
We would rather publish five calculators that work properly than a dozen rough ones. These are next, and they use the same architecture:
- Business Expenses Tracker — Category-level monthly expense planning
- Cash Flow Forecaster — 13-week rolling forecast