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Inventory Turnover

Inventory Turnover = COGS ÷ Average Inventory

Inventory turnover counts how many times a year the company sells through its average stock pile. High usually means fresher goods and less cash trapped on shelves. Too low can mean stale inventory. Too high can mean empty shelves.

01 Feel it first

Same warehouse, different sell-through

Pick retail fast, manufacturer, or luxury slow, or slide COGS and inventory. Watch turns and approximate days on shelf.

Inventory turnover
8.0×

02 Break the intuition

"Higher turnover is always better."

Company A runs shelves at 8× turnover. Reveal what happens when speed leaves no safety stock.

COMPANY A
~46 days on shelf
Stock depthThin
Fast mover
STOCKOUT RISK
Empty shelf
Demand spike, no backup
Lost salesYes
Speed without buffer
Company A turns inventory (about 46 days on shelf). That is fast, but shelves run thin. One supply hiccup and revenue stops while Company B at still has depth to sell through.

03 Race it

Fast 8× vs slow 2×

Company A and Company B hold similar inventory. Hit Race and see how many times each sells through in a year.

Hit Race to compare the lanes side by side.

04 Scrub the scale

Is 4× turnover healthy?

Drag the turnover slider. The same multiple can look stale, normal, or dangerously fast depending on context.

Inventory turnover
4.0×
Normal band
4.0×
0.5×12.0×

A luxury jeweler at 0.8× and a grocer at 10× can both be normal for their peer group. Always compare inside the same kind of business.

05 Two flavors

Turnover vs days on shelf

Turnover and days inventory are the same story flipped. One counts turns per year. The other counts days sitting on the shelf.

COGS ÷ average inventory. A grocer at sells through the pile eight times a year. Higher usually means less cash trapped in stock, all else equal.

06 The catch

Typical turnover by industry

Grocers run hot. Luxury and heavy manufacturing run slow. Always compare within peers.

Grocery / fast retail
~8–12×
General retail
~4–6×
Manufacturing
~2–4×
Luxury / slow goods
~0.5–1.5×

Illustrative inventory turnover by sector. Live benchmarks available on Amsflow.

07 Check yourself

Five quick checks

Question 1 of 5
Quick checkCOGS $400, average inventory $50. Inventory turnover is:
8× is right. Turnover = COGS ÷ inventory = 400 ÷ 50.

08 Where it breaks

When inventory turnover misleads

LIFO vs FIFO changes the COGS pile

Accounting method shifts cost of goods sold. Turnover can move without any real change in how fast goods sell.

One snapshot misses the season

Retailers stock up before holidays. Year-end inventory can look bloated or thin depending on timing.

Very high turnover can mean stockouts

Shelves running too lean lose sales when demand spikes or supply hiccups. Speed is not free.

Different goods mix unlike businesses

One division selling perishables and another selling spare parts blend into one turnover number that hides both stories.

See inventory turnover on a live stock.

Open any ticker for efficiency context, then screen peers by how fast they move goods off the shelf.