Sales velocity calculator
Units sold per store per day.
Formula
Sales velocity = units sold ÷ (number of stores × days in store)
Runs in your browser. Nothing is sent anywhere.
Sales velocity
0.487
units per store per day
Worked example
18,400 units across 420 stores over 90 days is 0.487 units per store per day. Small numbers are normal here: a rate below one still moves roughly 178 units a year through each door.
When you reach for this
The number a category manager uses to decide whether you keep the shelf. It normalizes for door count and time, so you can compare a small launch fairly against an established item.
How to read the number
Calculate it only over the period the product was on shelf. Counting days from the PO date rather than from confirmed set instructions will understate velocity and can cost you the listing.
Metrics that travel with it
Questions operators ask about this metric
When does the clock start?
At confirmed set. Days the product spent in transit or waiting in a back room are days it had no chance to sell, and counting them drags the rate down at exactly the wrong review.
Why normalize by store and by day?
Because door count and time on shelf both vary. Raw unit volume only tells you which product sat in more stores for longer, which is not a performance measure.
What counts as a store?
Doors actually carrying the item rather than the retailer’s total count. Including doors that never received stock is the most common way this figure gets understated.
What does the category manager do with it?
Ranks you against the items competing for the same space. If you want more facings, bring this alongside profit dollars per linear inch.
Stop calculating this by hand
Every number on this page comes out of data you already have — orders, shipments, inventory, deductions. Endless keeps those in one source of truth instead of four exports, so the metric updates on its own and agents watch it for you.