Cash Conversion Cycle Calculator: How Fast Cash Returns

Is a 79.08-day cash conversion cycle healthy?

On the defaults — $150,000.00 of average inventory, $900,000.00 of cost of goods sold, $300,000.00 of average receivables, $1,200,000.00 of net credit sales and $180,000.00 of average payables — the days inventory outstanding is 60.83 days, the days sales outstanding is 91.25 days, the days payable outstanding is 73.00 days, and the cash conversion cycle is 79.08 days. The cash conversion cycle — days inventory outstanding plus days sales outstanding minus days payable outstanding — is the whole cycle: how many days your cash is tied up between paying for stock and collecting from customers. Typical cycles vary by industry: retail often 30–60 days, manufacturing 60–120 days, construction longer because invoices are large and payment terms are long. A cycle of 79.08 days sits in the manufacturing band — not fast, not alarming, but worth watching: every day shaved off the cycle is a day of cash freed. A cycle that is too short can mean stockouts, rushed orders and strained suppliers — the goal is a healthy cycle, not the shortest possible one.

Four things about the model are worth stating plainly. First, the days inventory outstanding is the average inventory divided by the cost of goods sold, times 365 — $150,000.00 ÷ $900,000.00 × 365 = 60.83 days. Second, the days sales outstanding is the average receivables divided by the net credit sales, times 365 — $300,000.00 ÷ $1,200,000.00 × 365 = 91.25 days. Third, the days payable outstanding is the average payables divided by the cost of goods sold, times 365 — $180,000.00 ÷ $900,000.00 × 365 = 73.00 days. And fourth, the cash conversion cycle is the three legs combined — 60.83 + 91.25 − 73.00 = 79.08 days; all listed in Accuracy & limitations.

The worked example, line by line

Setup: $150,000.00 of average inventory, $900,000.00 of cost of goods sold, $300,000.00 of average receivables, $1,200,000.00 of net credit sales, $180,000.00 of average payables, target cycle 100.00 days.

Line 1 — the days inventory outstanding. The days inventory outstanding is $150,000.00 ÷ $900,000.00 × 365 = 60.83 days.

Line 2 — the days sales outstanding. The days sales outstanding is $300,000.00 ÷ $1,200,000.00 × 365 = 91.25 days.

Line 3 — the days payable outstanding. The days payable outstanding is $180,000.00 ÷ $900,000.00 × 365 = 73.00 days.

Line 4 — the cash conversion cycle. The cash conversion cycle is 60.83 + 91.25 − 73.00 = 79.08 days.

Line 5 — the inventory the target needs. The average inventory needed for a 100.00-day cycle is $201,575.34.

Line 6 — the payables the target needs. The average payables needed for a 100.00-day cycle is $128,424.66.

Line 7 — the check. 60.83 + 91.25 − 73.00 = 79.08 days, the cash conversion cycle.

Every branch, checked

Cost of goods sold $1,200,000: Days inventory outstanding 45.63 days; days sales outstanding 91.25 days; days payable outstanding 54.75 days; cash conversion cycle 82.13 days — With cost of goods sold of $1,200,000.00 the days inventory outstanding falls to 45.63 days and the days payable outstanding to 54.75 days, and the cycle rises to 82.13 days — the payables leg shrinks faster than the inventory leg.

Average receivables $200,000: Days inventory outstanding 60.83 days; days sales outstanding 60.83 days; days payable outstanding 73.00 days; cash conversion cycle 48.67 days — With average receivables of $200,000.00 the days sales outstanding falls to 60.83 days and the cycle drops to 48.67 days — collecting faster is the quickest way to shorten the cycle.

Average inventory $300,000: Days inventory outstanding 121.67 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 139.92 days — With average inventory of $300,000.00 the days inventory outstanding doubles to 121.67 days and the cycle rises to 139.92 days — stock sitting on shelves ties cash up.

Average payables $300,000: Days inventory outstanding 60.83 days; days sales outstanding 91.25 days; days payable outstanding 121.67 days; cash conversion cycle 30.42 days — With average payables of $300,000.00 the days payable outstanding rises to 121.67 days and the cycle drops to 30.42 days — supplier credit is the cheapest cash there is.

Net credit sales $1,500,000: Days inventory outstanding 60.83 days; days sales outstanding 73.00 days; days payable outstanding 73.00 days; cash conversion cycle 60.83 days — With net credit sales of $1,500,000.00 the days sales outstanding falls to 73.00 days and the cycle drops to 60.83 days.

Average payables $0: Days inventory outstanding 60.83 days; days sales outstanding 91.25 days; days payable outstanding 0.00 days; cash conversion cycle 152.08 days — With no payables the days payable outstanding is 0.00 days and the cycle is 152.08 days — paying cash for everything is the longest possible cycle.

Average inventory $0: Days inventory outstanding 0.00 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 18.25 days — With no inventory the days inventory outstanding is 0.00 days and the cycle is 18.25 days — the cycle is just the sales leg minus the payables leg.

The reverses, worked backwards

Smallest whole-dollar average inventory for the CCC to reach 100.00 days: At the displayed $201,576 the figures are Days inventory outstanding 81.75 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 100.00 days; average inventory needed for the 100.00-day target $201,575.34; average payables needed for the 100.00-day target $180,000.66. At the displayed $201,576 the cash conversion cycle is 100.00 days (unrounded 100.000267). At $201,575 the inventory is $1 short of the $201,576 needed — and the unrounded cycle is 99.999861, which displays as 100.00 days after rounding, so $201,576 is the smallest whole-dollar average inventory for the CCC to reach 100.00 days.

Smallest whole-dollar average payables for the CCC to fall to 60.00 days or below: At the displayed $227,055 the figures are Days inventory outstanding 60.83 days; days sales outstanding 91.25 days; days payable outstanding 92.08 days; cash conversion cycle 60.00 days; average inventory needed for the 60.00-day target $150,000.21; average payables needed for the 60.00-day target $227,054.79. At the displayed $227,055 the cash conversion cycle is 60.00 days (unrounded 59.999917). At $227,054 the payables are $1 short of the $227,055 needed — and the unrounded cycle is 60.000322, which displays as 60.00 days after rounding, so $227,055 is the smallest whole-dollar average payables for the CCC to fall to 60.00 days or below.

Smallest whole-dollar net credit sales for the CCC to fall to 75.00 days or below: At the displayed $1,256,215 the figures are Days inventory outstanding 60.83 days; days sales outstanding 87.17 days; days payable outstanding 73.00 days; cash conversion cycle 75.00 days; average inventory needed for the 75.00-day target $150,000.15; average payables needed for the 75.00-day target $179,999.85. At the displayed $1,256,215 the cash conversion cycle is 75.00 days (unrounded 74.999941). At $1,256,214 the sales are $1 short of the $1,256,215 needed — and the unrounded cycle is 75.000010, which displays as 75.00 days after rounding, so $1,256,215 is the smallest whole-dollar net credit sales for the CCC to fall to 75.00 days or below.

Largest whole-dollar average inventory for the CCC to STAY at or below 90.00 days: At the displayed $176,917 the figures are Days inventory outstanding 71.75 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 90.00 days; average inventory needed for the 90.00-day target $176,917.81; average payables needed for the 90.00-day target $179,999.19. At the displayed $176,917 the cash conversion cycle is 90.00 days (unrounded 89.999672). At $176,918 the inventory is $1 over the $176,917 allowed — and the unrounded cycle is 90.000078, which displays as 90.00 days after rounding, so $176,917 is the largest whole-dollar average inventory for the CCC to stay at or below 90.00 days.

Largest whole-dollar cost of goods sold for the CCC to STAY at or below 70.00 days: At the displayed $515,294 the figures are Days inventory outstanding 106.25 days; days sales outstanding 91.25 days; days payable outstanding 127.50 days; cash conversion cycle 70.00 days; average inventory needed for the 70.00-day target $150,000.01; average payables needed for the 70.00-day target $179,999.99. At the displayed $515,294 the cash conversion cycle is 70.00 days (unrounded 69.999995). At $515,295 the costs are $1 over the $515,294 allowed — and the unrounded cycle is 70.000036, which displays as 70.00 days after rounding, so $515,294 is the largest whole-dollar cost of goods sold for the CCC to stay at or below 70.00 days.

Smallest whole-dollar average receivables for the CCC to reach 85.00 days: At the displayed $319,453 the figures are Days inventory outstanding 60.83 days; days sales outstanding 97.17 days; days payable outstanding 73.00 days; cash conversion cycle 85.00 days; average inventory needed for the 85.00-day target $149,999.29; average payables needed for the 85.00-day target $180,000.71. At the displayed $319,453 the cash conversion cycle is 85.00 days (unrounded 85.000288). At $319,452 the receivables are $1 short of the $319,453 needed — and the unrounded cycle is 84.999983, which displays as 85.00 days after rounding, so $319,453 is the smallest whole-dollar average receivables for the CCC to reach 85.00 days.

A warning about the neighbours: every neighbour above shows as the target when rounded to two decimals, but its unrounded cycle is a hair above or below the target. A lender underwriting on the unrounded cycle would still say no where the unrounded figure misses the line. The page prints the unrounded neighbour value in full so the rounding does not mislead you: 99.999861, 60.000322, 75.000010, 90.000078, 70.000036 and 84.999983.

What the defaults assume

The defaults are $150,000.00 of average inventory, $900,000.00 of cost of goods sold, $300,000.00 of average receivables, $1,200,000.00 of net credit sales, $180,000.00 of average payables and a target cycle of 100.00 days — Days inventory outstanding 60.83 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 79.08 days; average inventory needed for the 100.00-day target $201,575.34; average payables needed for the 100.00-day target $128,424.66. With Cost of goods sold $1,200,000, Days inventory outstanding 45.63 days; days sales outstanding 91.25 days; days payable outstanding 54.75 days; cash conversion cycle 82.13 days. With Average receivables $200,000, Days inventory outstanding 60.83 days; days sales outstanding 60.83 days; days payable outstanding 73.00 days; cash conversion cycle 48.67 days. With Average inventory $300,000, Days inventory outstanding 121.67 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 139.92 days. With Average payables $300,000, Days inventory outstanding 60.83 days; days sales outstanding 91.25 days; days payable outstanding 121.67 days; cash conversion cycle 30.42 days. With Net credit sales $1,500,000, Days inventory outstanding 60.83 days; days sales outstanding 73.00 days; days payable outstanding 73.00 days; cash conversion cycle 60.83 days. With Average payables $0, Days inventory outstanding 60.83 days; days sales outstanding 91.25 days; days payable outstanding 0.00 days; cash conversion cycle 152.08 days. With Average inventory $0, Days inventory outstanding 0.00 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 18.25 days. With Average inventory $0, average receivables $0, average payables $0, Days inventory outstanding 0.00 days; days sales outstanding 0.00 days; days payable outstanding 0.00 days; cash conversion cycle 0.00 days. With Cost of goods sold $0, Days inventory outstanding — (undefined: no cost of goods sold to divide by); days sales outstanding 91.25 days; days payable outstanding — (undefined: no cost of goods sold to divide by); cash conversion cycle — (undefined). With Average inventory $123,456, cost of goods sold $876,543, average receivables $234,567, net credit sales $1,098,765, average payables $98,765, Days inventory outstanding 51.41 days; days sales outstanding 77.92 days; days payable outstanding 41.13 days; cash conversion cycle 88.20 days. With Average receivables $600,000, Days inventory outstanding 60.83 days; days sales outstanding 182.50 days; days payable outstanding 73.00 days; cash conversion cycle 170.33 days. With Average inventory $450,000, Days inventory outstanding 182.50 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 200.75 days. With Average inventory $201,575, Days inventory outstanding 81.75 days; days sales outstanding 91.25 days; days payable outstanding 73.00 days; cash conversion cycle 100.00 days. With What-if bars — average inventory halved, average receivables halved, average payables doubled, average inventory halved to $75,000: days inventory outstanding 30.42 days, cash conversion cycle 48.67 days; average receivables halved to $150,000: days sales outstanding 45.63 days, cash conversion cycle 33.46 days; average payables doubled to $360,000: days payable outstanding 146.00 days, cash conversion cycle 6.08 days.

A note on the rounding: with average inventory of $123,456, cost of goods sold of $876,543, average receivables of $234,567, net credit sales of $1,098,765 and average payables of $98,765, the unrounded days inventory outstanding is 51.408134, which rounds half-up to 51.41 days; the unrounded days sales outstanding is 77.921080, which rounds to 77.92 days; the unrounded days payable outstanding is 41.126590, which rounds to 41.13 days; and the unrounded cash conversion cycle is 88.202623, which rounds to 88.20 days. With average inventory of $201,575 the unrounded cycle is 99.999861, which rounds to 100.00 days — but it is still below the 100-day line. The page prints the unrounded values so the rounding does not mislead you.

Output · formula · meaning

Who uses this

• The small-business owner checking the year: they learn $150,000.00 of average inventory on $900,000.00 of cost of goods sold gives 60.83 days in stock — and they check the $201,576 reverse to see the smallest inventory for a 100.00-day cycle.
• The finance manager whose customers pay late: they learn 91.25 days sales outstanding is the longest leg of the cycle — and they check the $227,055 reverse to see how much supplier credit pulls the cycle down to 60.00 days.
• The manufacturer whose cycle stretched to 139.92 days: they learn doubling the inventory doubles the days inventory outstanding to 121.67 days — and they check the $176,917 reverse to see the largest inventory that stays at or below 90.00 days.
• The retailer running near zero: they learn a cycle near zero or even negative is normal when customers pay before suppliers are paid — and they check the $515,294 reverse to see the largest cost of goods sold that stays at or below 70.00 days.

Accuracy & limitations

The math is first-principles: the days inventory outstanding is the average inventory divided by the cost of goods sold, times 365; the days sales outstanding is the average receivables divided by the net credit sales, times 365; the days payable outstanding is the average payables divided by the cost of goods sold, times 365; the cash conversion cycle is the three legs combined; the average inventory needed at the target is (target cycle − days sales outstanding + days payable outstanding) × cost of goods sold ÷ 365; the average payables needed at the target is (days inventory outstanding + days sales outstanding − target cycle) × cost of goods sold ÷ 365 — all rounded to two decimals half-up. The reverses are judged on the UNROUNDED cycle: a neighbour one dollar short or over shows as the target when rounded to two decimals, but its unrounded cycle is above or below the target, so it does not meet the bar — the page prints the unrounded neighbour value in full. What the model cannot do is judge the business: use net credit sales, never total revenue, because cash sales are already collected; use cost of goods sold for the inventory and payables legs, never revenue; the averages are (opening + closing) ÷ 2, a simple average that hides swings inside the period; with cost of goods sold of $0 the days inventory outstanding and days payable outstanding are undefined — the calculator shows “—” with a note, never Infinity or NaN, and the days sales outstanding is still 91.25 days; with net credit sales of $0 the days sales outstanding is undefined and the cycle cannot be computed; a cycle that is too short can mean stockouts, rushed orders and strained suppliers — the goal is a healthy cycle, not the shortest possible one; and the same cycle means different things by industry, so compare within an industry, not across them. The cycle and the operating cycle are related: the operating cycle is days inventory plus days sales (before subtracting what you owe suppliers) — the cash conversion cycle is the operating cycle minus days payable. Use it to see how long your cash is tied up — then read the rest of the statements.

Frequently asked questions