Free interactive tool
Reorder Point Calculator
Demand × lead time + safety stock — order before the shelf goes empty.
Order before you run out
Set demand, delivery time, and safety stock; the sawtooth shows stock falling, orders landing, and how close you come to empty.
The reorder point is a promise about the future: enough stock to survive the wait for delivery, plus a buffer for the days that do not behave.
- Raise daily demand until a stockout appears, then repair it with safety stock.
- Which raises the reorder point faster — longer lead time or higher demand?
The reorder point is a promise about the future: enough stock to survive the wait for delivery, plus a buffer for the days that misbehave. ROP = daily demand × lead time + safety stock.
The sawtooth chart runs 60 days of your numbers — push demand up or stretch the lead time and watch how close the line comes to a stockout.
How much safety stock is right?
Enough to cover your worst realistic demand spike during one lead time — start small and tune from reality.
What hurts more, demand jumps or slow suppliers?
They multiply — which is why long lead times make every forecast error expensive.