How reorder levels are calculated

Stockwik answers three questions for every product: when to reorder, how much to order, and how urgent it is. It does this from your real sales history — no guessing, no spreadsheets. This page explains exactly how those numbers are built so you can trust them and tune them with confidence.

Every product gets two levels:

a reorder point (the minimum — when to order), and
an order-up-to level (the maximum — how high to refill).

Both are driven by how fast the product sells, how long your supplier takes to deliver, and how much buffer you want to keep.

Note

All of this math uses Available stock (what's free to sell), not On hand. If you're unsure of the difference, see Inventory: on hand, available & committed.

The reorder point (minimum)

This is the stock level at which you should place a new order. The idea is simple: you want to reorder while you still have just enough stock to last until the new shipment arrives — plus a safety cushion.

Reorder point = daily sales × (supplier lead time + safety-stock days)

Daily sales — how many units you sell per day, on average (see How sales velocity works).
Supplier lead time — how many days your supplier takes to deliver after you place an order (set on each supplier; defaults to 7 days).
Safety-stock days — extra buffer days to protect against a sales spike or a late delivery (an org-wide default of 14 days, adjustable per product).

Plain English

"Order when I have just enough left to cover the delivery wait, with a couple of weeks of buffer on top."

The order-up-to level (maximum)

When you do reorder, this is the level you refill up to. It represents how much stock you want on the shelf when a shipment lands.

Order-up-to = daily sales × days of cover

Days of cover — how many days of demand you want to hold (an org-wide default of 90 days — about 12 weeks — adjustable per product).

Plain English

"Keep about 12 weeks of stock on hand."

A worked example

Say a product sells 0.5 units per day, your supplier's lead time is 7 days, your safety stock is 14 days, and your days of cover is 90:

Level	Math	Result
Reorder point	0.5 × (7 + 14)	≈ 10 units
Order-up-to	0.5 × 90	45 units

So: when this product's available stock drops to about 10, Stockwik flags it to reorder, and suggests buying enough to bring it back up to 45.

How the suggested order quantity is figured

On the Reorder page, Stockwik doesn't just tell you what to order — it tells you how much:

Suggested quantity = order-up-to − available − incoming

Incoming is anything already on an open purchase order, so you're never told to double-order.
The result is rounded up to your supplier's minimum order quantity (MOQ) and pack size, so you order whole cases or pallets rather than odd units.

Continuing the example: order-up-to is 45, you have 12 available and 0 incoming → suggested order ≈ 33 units. If you buy that item by the case of 12, Stockwik rounds up to 3 cases (36 units).

Tip

Products that are well-stocked ("Watch" or "Healthy") usually suggest 0 — they don't need ordering yet. You can still type in a quantity to add them to an order if you want to top up.

Seasonal products

Some products sell steadily; others spike at a certain time of year. Stockwik detects when a product has a strong seasonal peak and treats it differently:

During its peak season, the order-up-to level is calculated from the product's peak sales rate — so you stock up ahead of the rush.
Outside peak season, it uses the normal blended rate — so you don't carry peak-sized inventory all year and end up overstocked.

You don't have to configure this; it's detected automatically from the product's sales pattern. (More in How sales velocity works.)

When you want to override the math

The calculated levels are a strong default, but you're always in control. On a product's detail page (Replenishment rules tab) you can:

Pin a minimum or maximum to a fixed number — useful when a supplier has a hard minimum, or you simply always want a certain quantity on the shelf. A pinned value replaces the formula for that product.
Override days of cover or safety stock for just that product — e.g. raise safety stock on a critical item with an unreliable supplier, or lower days of cover on a slow mover to avoid dead stock.

Org-wide defaults live in Settings → Planning defaults; per-product overrides live on the product. See Planning defaults & overrides.

Note

When you pin an override, the Reorder page still shows you what the formula would have suggested, so you can compare.

What the statuses mean

On the Reorder page and the inventory list, each product carries a status based on these levels:

Status	What it means
Stockout risk	You'll run out before a new order could arrive — even if you order today. Act now.
Reorder	At or below the reorder point. Time to order.
Watch	Above the reorder point but trending toward it. No action needed yet.
Healthy	Comfortably stocked.
On order	Units are already incoming on an open purchase order.