Economic order quantity calculator
Estimate batch sizes with explicit model assumptions.
How to use Economic order quantity calculator
The economic order quantity calculator estimates the order size that balances ordering and holding costs using the classic EOQ formula, the square root of two times annual demand times cost per order, divided by annual holding cost per unit. With the defaults of 10,000 units, 50 per order and 2 holding cost, EOQ is about 707 units.
- Enter the requested values in the settings panel.
- Set annual unit demand, cost per order, annual holding cost per unit.
- Run economic order quantity calculator, review the output, then use the available copy or download controls.
What this tool supports
Estimate batch sizes with explicit model assumptions.
- Annual unit demand
- Range: 0 to 1000000000000
- Cost per order
- Range: 0 to 1000000000000
- Annual holding cost per unit
- Range: 0.000001 to 1000000000000
Limits and processing
Local bounded calculations. Numeric inputs must be finite and within the visible ranges. Lists and tables have operation-specific limits. Models, estimates and supplied rates must be checked against your intended use.
Frequently asked questions
What assumptions does the EOQ calculator use?
It assumes constant demand, a fixed cost for every order, and no stockouts or quantity discounts. The result shows this note, since real purchasing with price breaks or variable demand may need a different order size.
Why can't holding cost be zero in the EOQ calculator?
Holding cost is the divisor in the EOQ formula, so zero would make the result infinite. The field requires a value of at least 0.000001 per unit per year.
Does the EOQ result round to whole units?
No. The calculator shows the exact formula result, which is usually fractional, such as about 707.1 units for the defaults. Round it to a practical pack or pallet size when placing orders.
Where is my input processed?
This operation processes its source in your browser. Copy and download are explicit actions; source input is not saved in an account or history.
What are the input limits?
Local bounded calculations. Numeric inputs must be finite and within the visible ranges. Lists and tables have operation-specific limits. Models, estimates and supplied rates must be checked against your intended use.