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A/R Days Calculator

decimal

Result

Calculated result 266.6666666667 Based on the values entered.
↗ Finance

A/R Days Calculator (DSO) The A/R Days Calculator finds days sales outstanding (DSO) — how long, on average, it takes to collect payment after a sale. The formula used is: A/R Days = (Accounts Receivable ÷ Revenue) × Days in Period. — free online calculator.

Formula

A/R Days = (A/R ÷ Revenue) × Days
  • A/R Days Calculator calculates its result from Days, Revenue, A, Rate (decimal). It uses the formula A/R Days = (A/R ÷ Revenue) × Days. Change any input to recalculate the result instantly.
  • The main inputs are Days, Revenue, A, Rate. Enter them in the units and format shown in the calculator.
  • Use monetary amounts, rates and time periods exactly as labeled; the result reflects the assumptions entered on this page.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: A/R Days

Inputs
  • Days: 10
  • Revenue: 3
  • A: 4
  • Rate: 0.05 decimal

Using Days = 10, Revenue = 3, A = 4, Rate (decimal) = 0.05, the calculated result is 266.6666666667.

Sample result: Calculating…

Frequently asked questions

What does the A/R Days calculate?

A/R Days Calculator (DSO) The A/R Days Calculator finds days sales outstanding (DSO) — how long, on average, it takes to collect payment after a sale. The formula used is: A/R Days = (Accounts Receivable ÷ Revenue) × Days in Period. — free online calculator.

Which values should I enter?

Enter Days, Revenue, A, Rate using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: A/R Days = (A/R ÷ Revenue) × Days.

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 7, 2026