inventoryturnover.calc
ATLAS / NAICS 4413

Auto Parts inventory turnover.

Hub-and-spoke replenishment offsets a long-tail SKU profile to a 60-day cycle.

Median turnover
6.0x
DIO
61 days
Top quartile
8.5x
Bottom quartile
4.2x
CENSUS-NAICS 2026Verified 2026-06-20

Where the 6.0x median comes from

The 6.0x figure is the cross-firm median for auto parts as of 2026-06-20, derived from U.S. Census NAICS source data. Top-quartile operators in this category clear 8.5x; the bottom quartile sits at 4.2x.

At the median, average inventory equals roughly 61 days of cost of goods sold. A business under bank-covenant review should compare its trailing-twelve-month ratio against this median first, then against the 8.5x top-quartile mark before setting a working-capital target.

Benchmark band

The band below plots a hypothetical 6.0x ratio against the industry axis. Colour bands flag whether a result is within fifteen percent of the median (caution), above it (healthy), or more than fifteen percent below it (risk).

0x5x10x15x20x

Five-year trend

The auto parts median has moved from 5.4x in the earliest comparable year to 6.0x in the latest pull, a gradual lift of 0.6 turns.

How to use this number

  • Pull trailing-twelve-month COGS and the matching average inventory balance from the GL.
  • Compute your turnover with the calculator on the homepage. Select the Auto Parts benchmark.
  • If your ratio is below 6.0x by more than fifteen percent, start the playbook at diagnose low turnover.
  • If you sit above 8.5x, confirm stock-out frequency before declaring victory. See high vs low turnover.

Try the calculator with the Auto Parts benchmark

INPUTS
TERMINAL READOUT
Inventory turnover
0.0x
Days inventory outstanding
0days
Working capital freed at median
$0
Your ratio vs Auto Parts median (6.0x)CENSUS-NAICS 2026
0x5x10x15x20x