DSO & DPO Calculator — Days Outstanding + Cash Conversion Gap
Free DSO + DPO calculator. AR ÷ credit sales × 365 = DSO. AP ÷ COGS × 365 = DPO. The gap (DSO − DPO) is what you fund out of working capital.
DSO & DPO — Days Sales / Payables Outstanding
DSO (days to collect)
46 days
DPO (days to pay)
42 days
Cash conversion gap
4 days
Target DSO: under 45 days for most B2B; under 30 for B2C. Cash conversion gap = DSO − DPO. A 30+ day gap means you're funding your customers' cash flow out of your own pocket — every day of that gap costs working-capital interest.
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Calculate DSO, DPO and the cash-conversion gap
Enter receivables, payables, revenue and COGS to get your Days Sales Outstanding (DSO) and Days Payable Outstanding (DPO) — plus the gap between them, which is what really drives your working-capital needs.
DSO vs DPO
- DSO — average days to collect cash from customers after a sale. Lower is better.
- DPO — average days you take to pay suppliers. Higher (within terms) keeps cash in your business longer.
- The gap — when DSO > DPO you're funding customers before suppliers pay you, which ties up cash.
Worked example
DSO = (Accounts Receivable ÷ Revenue) × 365; DPO = (Accounts Payable ÷ COGS) × 365. If you collect in 45 days but pay in 30, that 15-day gap has to be financed from working capital. Shortening DSO or extending DPO (without straining suppliers) frees up cash. Everything is computed in your browser.
How to use the DSO & DPO Calculator
Takes about a minute. No signup, no download, your data stays in your browser.
- 1Open the tool. Scroll up to the DSO & DPO Calculator above — it loads instantly in your browser, no install needed.
- 2Enter your values. The fields come pre-filled with realistic defaults so you can see how it works — replace them with your own numbers.
- 3Read the result. The output updates instantly. Copy or share it — nothing is uploaded to a server, everything stays on your device.
Frequently asked questions
Common questions about the DSO & DPO Calculator.
Is the DSO & DPO Calculator free to use?
Yes. The DSO & DPO Calculator on 7BusyBoss is completely free — no signup, no paywall, no usage cap.
Do I need to sign up to use the DSO & DPO Calculator?
No. The DSO & DPO Calculator works instantly in your browser — no account needed. Signing in with Google is optional and only unlocks features like saving favorites and higher AI build limits.
Does the DSO & DPO Calculator work on mobile?
Yes. Every tool on 7BusyBoss is mobile-responsive and works in any modern browser — Chrome, Safari, Firefox, Edge — on phones, tablets and desktops.
Is my data safe when I use the DSO & DPO Calculator?
Yes. The DSO & DPO Calculator runs entirely in your browser — your inputs never leave your device unless the tool explicitly fetches public data (e.g. currency rates). We don't store the values you type.
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