The WooCommerce Reorder Calculator estimates the inventory level at which a replenishment order should be placed. It combines expected demand during supplier lead time with a safety-stock buffer and compares that threshold with current inventory.
The result helps merchants avoid waiting until stock is nearly gone. It is most reliable when demand and lead-time inputs are updated to reflect recent operating conditions.
1. Set the reporting scope
Enter average unit demand per day for the SKU.
2. Enter the primary value
Enter the supplier lead time from order placement to sellable receipt.
3. Add supporting inputs
Add safety stock to protect against demand or delivery variation.
4. Review the result
Enter current on-hand inventory to see how far it is from the threshold.
5. Compare and act
Place or plan the replenishment order when available inventory approaches the reorder point.
Where:
The calculator uses the entered values directly and rounds only for display.
Use the result as a planning estimate and compare it with consistent historical data.
Actual WooCommerce reports may differ because of tax settings, refunds, fees, timing, and data definitions.
They affect inventory position, but this basic calculator compares the threshold with current stock only. Account for reliable inbound units separately.
Update it when sales trends, promotions, or seasonality materially change. Fast-moving products may need more frequent review.
Yes. Include every day until inventory is actually available for sale.
The result indicates replenishment should already be initiated, subject to open orders and backorders.
It can be based on service-level models, historical variability, or a practical buffer. This calculator accepts the chosen unit amount rather than deriving it.