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 $19 of the next order is lateness padding (Northwind Goods usually arrives 4 days late). Estimate from pace × unit cost (demo).
Canvas Tote — Natural RM-001 · Northwind Goods
OK No order suggested right now.
| Step | Math | Result |
|---|---|---|
| Velocity (in-stock days only) | 87 units ÷ 50 in-stock days (6 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 = 4 | 4 units |
| Reorder point | velocity 1.7 × lead time 14d + safety 4 | 29 units |
| Inventory position | on hand 67 + incoming 0 | 67 units |
| Days of cover | position 67 ÷ velocity 1.7 | 38.5 days |
| Order by | today + ⌊(position 67 − reorder point 29) ÷ velocity⌋, min today | Dec 5 |
| Suggested quantity | target 53 (velocity × (lead 14d + review 14d) + safety) − position 67; MOQ 0, case pack 1 | 0 units |
Demo stock history — the live app charts your own daily snapshots.
Stock history (60 days) 30 days recorded · 2 at zero · range 0–134
Max 134 on hand
Sep 16 Nov 14
Red = out of stock that day (excluded from sales-rate math). Gaps = no snapshot that day.