Cash Conversion Cycle Calculator

Days between paying and being paid.

Days between paying and being paid. Cash leaves before it returns, and the gap has to be funded.

Written and maintained by Mohit PatelLast checked August 4, 2026How we build these

Currency

Average inventory at cost

Annual cost of goods sold

Average receivables

Annual revenue

Average payables

Cash conversion cycle

53 days

$107,663 of funding it requires

Days inventory outstanding91 days

Days sales outstanding8 days

Days payable outstanding−46 days

Cash tied up$107,663

Cash leaves 53 days before it returns, so every increase in run rate needs funding first. Cutting the cycle by ten days releases $20,384 permanently, the same effect as raising that much capital, with no interest.

How the Cash Conversion Cycle Calculator works

Cash leaves before it returns, and the gap has to be funded. Cutting the cycle by ten days releases the same cash as raising that much capital, with no interest and no dilution, which is why it is the most valuable finance work most small businesses never do.

Also known as: CCC calculator · cash cycle days · DIO plus DSO minus DPO

The three periods and what each one is

The cash conversion cycle is days inventory outstanding, plus days sales outstanding, minus days payable outstanding. It measures how long a pound spends tied up between leaving your bank and coming back.

Days inventory outstanding is how long stock sits before it sells. Days sales outstanding is how long customers take to pay after they buy. Days payable outstanding is how long you take to pay suppliers after you receive goods.

The subtraction is the important part and the one people find counterintuitive. Taking longer to pay suppliers shortens your cycle, because their money is funding your inventory. That is why the metric rewards slow payment, and why it should be read alongside supplier relationship health rather than in isolation.

What a typical ecommerce cycle looks like

For a direct-to-consumer seller, days sales outstanding is nearly zero because cards settle in two to five days. So the cycle is essentially inventory days minus payable days.

A seller holding 75 days of stock and paying suppliers in 30 has a 45 day cycle. Every pound of cost of goods is out of the bank for a month and a half. At £30,000 of monthly cost of goods that is roughly £45,000 permanently tied up in the cycle.

Importers usually have it worse, because the payment terms run the wrong way. Paying a 30% deposit on order and the balance before shipping, with 40 days on the water, means money leaves the account 40 to 70 days before the goods are even available to sell. That negative payable position adds directly to the cycle and it is the reason importing is so much more cash-hungry than domestic wholesale.

Translating days into pounds

The cycle in days becomes useful when converted to money: cycle days times daily cost of goods sold is the cash permanently locked in operations at current volume.

That figure is the answer to the question of how much funding the business actually needs, and it is a better answer than any rule of thumb. A business with a 60 day cycle and £1,200 daily cost of goods needs £72,000 of working capital to run at that level, before any growth.

It also prices improvement. Cutting the cycle by ten days releases ten days of cost of goods, permanently. On the same numbers that is £12,000 of cash freed without selling anything extra, which is usually easier than raising it.

Shortening it without breaking anything

On the inventory side, the honest levers are shorter lead times, better forecasting and clearing the tail. Ordering more frequently in smaller quantities cuts holding at the cost of unit price and freight, and the trade is worth calculating rather than assuming either way.

On the payables side, negotiate terms rather than simply paying late. Suppliers will often extend terms in exchange for volume commitment, longer contracts or reliable ordering, and the conversation goes better before you need it than after.

On the receivables side, for anyone with trade customers, the fix is usually process. Invoices sent the day of dispatch, terms stated on every document, a chase at seven days past due rather than thirty. Most late payment in small business is not deliberate; it is a queue that nobody joined.

The seasonal distortion

The cycle calculated on annual averages hides the shape that actually matters. A business building stock for Christmas has a cycle that balloons in September and October and collapses in December, and the annual average describes neither state.

Calculate it monthly and plot it. The peak is the number that determines how much funding you need and when, and it is frequently double the annual average in seasonal businesses.

This is also where the funding conversation belongs. A facility sized to the average will fail in September. One sized to the peak sits unused for eight months and costs arrangement fees for the privilege. A seasonal facility drawn when needed is the right instrument, and asking for it requires exactly this chart.

Where to go next

The Cash Conversion Cycle question rarely arrives on its own. These are the ones that usually come with it:

Working Capital Calculator — The quick ratio is the honest one.
Days Sales Outstanding Calculator — Revenue recognised, cash not received.
Days Payable Outstanding Calculator — Early payment discounts are worth more than they look.
Etsy Fee Calculator — Every Etsy fee on one sale, itemised.

Not financial advice. Marketplace fees change, and they vary by country, plan and seller status. Every rate here is an editable default, not a quoted price, check the platform's current fee schedule before you price a product against it. This is not tax or business advice.

Frequently asked questions

What is the cash conversion cycle?

Days inventory outstanding plus days sales outstanding minus days payable outstanding. It measures how long cash is tied up between paying suppliers and being paid by customers.

Can it be negative?

Yes, and it is the strongest cash position available, customers pay before you pay suppliers, so growth funds itself. Large retailers and subscription businesses often operate this way.

Which lever moves it most?

Usually inventory days, because it is the largest term for most product businesses and the most under your control. Supplier terms are next.

How much is a day worth?

Daily cost of goods sold. Cutting ten days releases ten times that permanently, which is why the exercise repays the effort of measuring it.

Put this calculator on your own site

Free to use, on any site, commercial or not. Paste this where you want it to appear. It is a plain iframe, so it works in WordPress, Squarespace, Wix, Webflow, Ghost and anything else that accepts HTML.

The one-line version

<iframe src="https://www.thecalclibrary.com/embed/cash-conversion-cycle-calculator" width="100%" height="640" style="border:1px solid #e2e8f0;border-radius:12px" loading="lazy" title="Cash Conversion Cycle Calculator"></iframe>
<p style="font:13px/1.5 system-ui,sans-serif;margin:6px 0 0;color:#64748b">Powered by <a href="https://www.thecalclibrary.com/cash-conversion-cycle-calculator" style="color:#64748b">Cash Conversion Cycle Calculator</a> from The Calc Library</p>

The only condition is that the credit line below the frame stays in place. That one line is what pays for the tool being free — it is how anyone else finds it.