Live demo with sample store data. About Reorder Math, plans and install
Suggestions, you decide. Read-only. Reorder Math only suggests — you decide. It never changes your products, inventory, or orders. Showing demo data (preview only).
About $46 of the next order is lateness padding (Northwind Goods usually arrives 4 days late). Estimate from pace × unit cost (demo).
Leather Keychain RM-009 · Northwind Goods
Order now Suggest ordering 37 units by Nov 14 (≈ $252.34).
| Step | Math | Result |
|---|---|---|
| Velocity (in-stock days only) | 96 units ÷ 56 in-stock days (0 stockout days excluded) | 1.7 / day |
| Daily demand variability (σ) | sample std. dev. of units/day on in-stock days | 0.5 |
| Safety stock | z(95%) 1.65 × σ 0.5 × √lead time 14d = 3 | 3 units |
| Reorder point | velocity 1.7 × lead time 14d + safety 3 | 27 units |
| Inventory position | on hand 10 + incoming 4 | 14 units |
| Days of cover | position 14 ÷ velocity 1.7 | 8.2 days |
| Order by | today + ⌊(position 14 − reorder point 27) ÷ velocity⌋, min today | Nov 14 |
| Suggested quantity | target 51 (velocity × (lead 14d + review 14d) + safety) − position 14; MOQ 0, case pack 1 | 37 units |
Demo stock history — the live app charts your own daily snapshots.
Stock history (60 days) 30 days recorded · 2 at zero · range 0–28
Max 28 on hand
Sep 16 Nov 14
Red = out of stock that day (excluded from sales-rate math). Gaps = no snapshot that day.