Tools
Free calculators for the numbers that matter.
Each tool starts from an example with realistic numbers, shows the formula and works without signing up. The calculation runs in your browser: the values you enter never leave the page.
Calculators in the guides
Each calculator sits inside its guide, next to the formula and the worked example it starts from.
- DSO calculatorMonthly, quarterly and countback DSO, from open receivables and the last three months of sales.In the guide “DSO calculation: formula, the countback method and a calculator”
- Weighted pipeline calculatorTotal and probability-weighted pipeline, the weighted share and coverage of the period's target.In the guide “Sales pipeline: how to manage it and which KPIs to use”
- Contribution margin calculatorUnit and total margin, operating result, break-even point and margin of safety.In the guide “Contribution margin: formula, break-even point and a calculator”
- Churn rate calculatorChurn for the period, monthly and yearly, retention, net growth and average customer lifetime.In the guide “Customer churn rate: formula, worked example and calculator”
- Forecast error calculatorMAE, MAPE, WAPE and bias of a forecast compared with actual sales over four periods.In the guide “Demand forecasting: methods, forecast error and a calculator”
- Stock coverage calculatorDays of stock coverage, the reorder point and the days left before reordering.In the guide “Days of inventory coverage: the reorder point and safety stock”
- OTIF calculatorOn-time, in-full and OTIF rates, with a check that the counts are consistent.In the guide “Supplier OTIF: what it is, how to calculate it and how to use it in vendor rating”
- MTBF and MTTR calculatorMTBF, MTTR, inherent availability and reliability over a mission time.In the guide “MTBF and MTTR: formulas, calculation and a practical example”
- Cp and Cpk calculatorCp, Cpk and the expected parts per million out of tolerance, from the specification limits, the mean and the standard deviation.In the guide “Cp and Cpk: formulas, difference and calculator”
The tools are free and ask for no email address. Calculations and downloads are generated in your browser: the values you enter are neither sent to Muvia nor stored.
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