Membrane

Operations metric

Weeks of inventory on hand

How many weeks your stock would last at your recent pace of sales.

  1. 1 · How we calculate it

    Units on hand divided by average weekly units sold.

    Weeks of inventory=Units on hand÷Average weekly units sold

    We divide the units on hand at the latest stock snapshot by the average units sold per week over the last 3 complete months.

    Every channel counts, in stock and in sales.

  2. 2 · Where the data comes from

    It needs 2 kinds of data, each from a system you connect.

    DataFrom
    Units on handShopify, Amazon Seller Central, ShipHero
    Orders and refunds on every sales channelShopify, Amazon Seller Central, TikTok Shop
  3. 3 · What we compare it with

    Public direct-to-consumer brands hold a median of 19 weeks.

    11.3 weeks25th percentile
    19.0 weeksMedian · Eightx
    24.1 weeks75th percentile

    Eightx counted 133 days of inventory at the median of 11 public brands, and 79 to 169 days for the middle half.1 We divide the days by 7.

    Their basisThey divide inventory at cost by a year’s cost of goods. We divide units on hand by units sold.
    Their periodEach brand’s latest fiscal year. Ours uses the last 3 complete months of sales.
    Who they count11 public direct-to-consumer and consumer-goods brands.
    Example · Northwind Pet Co, an invented brand with an invented number
    19.0 weeks medianNorthwind Pet Co · 16.0 weeks
    0.0 weeks30.0 weeks

    Inside their middle half

    Eightx, Apr 30, 2026 →

Sources

Every page was read on Sep 30, 2026.

Published figures

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