Start with one workflow, then move only when the result supports the next decision.
When Should I Reorder Inventory?
Enter your daily sales, current stock, and lead time. Get your reorder point instantly — know exactly when to order and how much.
Sales Velocity
Average units sold per day
Inventory
Supplier Timing
Days from order to delivery
Buffer for demand spikes or delays
Optional
Supplier's minimum order quantity
🟡 Soon
Reorder within a week
Current Stock
200
units
Reorder Point
140
units
Days Until Stockout
20
days
Days Until Reorder
6
days
Timeline
Reorder By
Jul 5
Delivery
Jul 12
Stockout
Jul 19
Recommended Order Quantity
440 units
Next decision: launch viability
Inventory timing needs attention, but you can still check whether the broader launch case is worth funding.
How it works
The reorder point is calculated as your daily sales multiplied by (lead time + safety days). This ensures you have enough stock to cover the period between placing an order and receiving it, plus a buffer for unexpected demand or delays.
The recommended order quantity is calculated to provide approximately 30 days of stock after the lead time and safety buffer are covered. If your supplier has a minimum order quantity (MOQ), the calculator will adjust accordingly.
Next Decision
Keep moving through the operating model instead of treating this tool as a one-off calculation.
Check Launch Viability