Replenishment intelligence
What to order, when, and how much. Monte Carlo simulation meets purchase order planning — all in your browser.
| SKU ▲ | Stock ▲ | Demand/day ▲ | Lead Time ▲ | Safety Stock ▲ | ROP ▲ | Days Left ▲ | Stockout Risk ▲ | Suggested ▲ | Vendor ▲ |
|---|---|---|---|---|---|---|---|---|---|
| Load the sample store or upload a CSV to see your inventory overview. | |||||||||
Safety Stock = Z × σ(LT) — covers demand uncertainty during lead time. Uses 1.65σ (95th percentile).
Reorder Point = (Demand/day × Lead Time) + Safety Stock — the stock level that triggers a replenishment order.
Days Left = Median days until stockout across 20,000 Monte Carlo simulations.
Stockout Risk = Percentage of simulations where stock hits zero before the forecast horizon.
Suggested Units = P95 demand over the replenishment cycle minus current stock plus safety stock.
Demand volatility is modeled as log-normal, calibrated from your sales history standard deviation.
Lead time variance models real-world supplier unpredictability — delays, early deliveries, and everything in between.