Inventory calculator
Economic Order Quantity Calculator
Estimate an economic replenishment quantity from annual demand, cost per order, and annual holding cost per unit.
Your shipment details
Updates liveThe calculator applies the formula and unit conversion automatically.
Several shipments to calculate?
Use the $19 operations workbook for batch work.
Compare quotes and keep landed cost, pallet plans, DIM checks, and margin calculations in one editable Excel file.
Method & limits
How this estimate works
The result uses the formula below. Check the measurements, unit setting, and applicable carrier or supplier rule before using it.
The classic EOQ model assumes steady demand, stable costs, immediate replenishment, and no stockouts or quantity discounts.
This calculator is a planning aid, not a carrier quotation, engineering assessment, or professional advice. Verify critical figures against current supplier and carrier documentation.
Examples and guides