Business
Stock turnover & DSO Calculator
Measure inventory days and customer payment collection time. This free stock turnover & dso calculator shows the calculation and its assumptions so you can compare your own figures.
Your results
Measure inventory days and customer payment collection time.
Calculated outcomes
- Average Inventory
- €22,500.00
- Average Receivables
- €17,500.00
- Inventory Turnover
- 5.333×
Assumptions and estimates
- Inventory turnover uses COGS / average stock. DSO uses average trade receivables / credit sales × period days; enter credit revenue on a consistent VAT basis. Zero denominators return an undefined metric.
- Method: Inventory turnover = COGS ÷ average stock. DSO = average trade receivables ÷ credit sales × period days.
- Use credit sales for DSO. DSO measures receivables, not stock. Zero denominators return an unavailable metric rather than infinity.
Useful next steps
- Use Compare options to test an alternative side by side.
- Copy, print or download a record of this calculation when you need one.
Reports open your email app addressed to s@s1.ie with the public page address only. Your inputs are never added.
How the stock turnover & dso calculation works
Inventory turnover = COGS ÷ average stock. DSO = average trade receivables ÷ credit sales × period days.
Use credit sales for DSO. DSO measures receivables, not stock. Zero denominators return an unavailable metric rather than infinity.
Using this calculator
- Enter your own figures in the labelled inputs. Keep the currencies, units and time periods consistent.
- Choose any applicable rate profile, pattern or assumption shown for this tool. Open additional inputs when relevant.
- Review inventory days and dso days, then read the stated assumptions and eligibility conditions before using the result.
Worked example
This is a static example using illustrative inputs, not facts about you or today’s date. The displayed eligibility selections and assumptions apply only to this example.
See example inputs
- Period COGS (€)
- 120000
- Opening stock (€)
- 20000
- Closing stock (€)
- 25000
- Credit sales for period (€)
- 200000
- Opening trade receivables (€)
- 15000
- Closing trade receivables (€)
- 20000
- Days in accounting period
- 365
- Inventory Days
- 68.44
- DSO Days
- 31.94