How many days of stock do you have left?
Enter what you have and what you sold. You get the days of cover, the date the product runs out at its current pace, and the day you have to place the order to have it back in time.
What you have right now, for one product or one variant.
From your Shopify admin: Analytics → Reports → Sales by product.
Fill in stock and 30-day sales to see the projection.
Optional — but this is where it gets interesting. See below.
Days between placing the order and the stock being back on your shelf.
Nothing is sent anywhere. The calculation runs in your browser.
How this is calculated
No black box. Four rules, and you can check every one of them by hand.
- 01
- The pace comes from your sales, not from a model
- Units sold divided by the number of days in the window. Nothing is smoothed, weighted or seasonally adjusted — a number you cannot reproduce on paper is a number you cannot trust.
- 02
- When two paces disagree, the earlier warning wins
- If you give both windows, the projection uses the faster of the 7-day and 30-day pace. Between two honest estimates, the useful one is the one that warns you sooner.
- 03
- Days of cover, not units
- 400 units of something that sells 60 a day is a tighter position than 12 units of something that sells one a week. Units answer “how much”; days answer “how long”, and only the second one is a deadline.
- 04
- The order date is the only number you act on
- “Runs out in 6 days” is an observation. “Order by Thursday” is a decision. It is simply the stockout date minus your lead time — and when it lands in the past, it says so instead of showing zero.
What this does not do
- It does not suggest a quantity to order. That depends on your margins, your cash and your supplier minimums — none of which are on this page.
- It reads one product. A catalogue is a different problem: the question is not “is this one at risk” but “which of my 455 are, and which one costs me the most”.
- It assumes your selling pace holds. A promotion, a mention, or a seasonal peak breaks that assumption — which is exactly why the 7-day window is worth filling in.
Coming from Stocky? Here is what the native Shopify admin took over, and what it did not.
One product took you thirty seconds. You have four hundred.
StockPulse runs this calculation on every product and variant you sell, updates it daily, and emails you on the mornings something needs your attention. Seven days free, then $19 a month.