Packaging Reorder Point Calculator
Calculate a simple replenishment trigger from daily demand, supplier lead time and explicitly chosen safety stock.
Use a saved product specification (optional)
Enter your values
First time using this calculator?
Replace the example values with figures from your supplier sheet or measurements. Choose the unit beside each value. Results update as you type; fix any highlighted field before using the result.
GSM means grams per square metre. Net weight excludes the core and other packaging. MOQ means the minimum order quantity. An optional field can stay blank unless the result you need depends on it.
Prices keep the selected currency; changing its label does not convert an exchange rate. Save or export the result after checking your inputs.
Reorder inventory position
Daily usage and lead time must use the same operating-day or calendar-day basis.
Safety stock is entered, not inferred from a service level or demand distribution.
Does not calculate order quantity, EOQ, supplier reliability or a guaranteed stockout probability.
Reorder point = ceil(Daily usage × Lead time + Safety stock)
Inputs: Average usage per day = 1000 units/day; Supplier lead time = 15 days; Chosen safety stock = 5000 units. Result: Reorder inventory position = 20000 units; Expected lead-time demand = 15000 units.Saved calculations stay in this browser. No account or cloud backup is created.
Save to a product project (optional)
Choose or create a saved product project ↗This is an illustrative example. Saved or transferred values must be checked against your job.
Calculated from your inputs. Confirm specifications with your supplier.
How sensitive is this result to your assumptions?
Vary one input and inspect reorder inventory position
All other entered inputs stay fixed. Ranges are your scenarios, not statistical confidence or supplier performance predictions. This uses the same validated calculator engine.
The formula, made clear.
The trigger covers expected demand while replenishment is in transit, plus the safety stock you choose. Compare the trigger with inventory position: usable on-hand stock plus confirmed inbound orders less outstanding demand.
How to use this calculator
- 01
Enter average usage per day, supplier lead time, chosen safety stock.
- 02
Use a consistent unit and cost boundary across inputs.
- 03
Review the result, whole-unit rounding and limitations before placing an order.
A calculation you can check
At 1,000 units per day, 15 days lead time and 5,000 safety units, the reorder trigger is 20,000 units.
- Average usage per day
- 1000 units/day
- Supplier lead time
- 15 days
- Chosen safety stock
- 5000 units
Inputs: Average usage per day = 1000 units/day; Supplier lead time = 15 days; Chosen safety stock = 5000 units. Result: Reorder inventory position = 20000 units; Expected lead-time demand = 15000 units.Check the displayed formula and units against your quotation. Use measured GSM, net weight and actual layout dimensions where available. Default densities are planning assumptions, not certified material properties. Calculated cost does not certify strength, compatibility or safe loading.
Method, units and material assumptions ↗