Business decision tool
Economic Order Quantity Calculator
Calculate the order quantity that balances annual ordering and inventory holding costs.
Inputs and results stay in this browser. Currency symbols are illustrative; use any consistent currency.
Understand Economic order quantity
One idea, three depths
Choose how deeply to explain Economic order quantity
Economic order quantity: Calculate the order quantity that balances annual ordering and inventory holding costs.
Age 5Explain it to a 5-year-oldStart with a picture
Imagine using Economic order quantity to answer this question: calculate the order quantity that balances annual ordering and inventory holding costs? Enter Annual unit demand (D), Cost per order (S), Annual holding cost per unit (H); the calculator shows Economic order quantity. Try changing one number and watch what happens to Economic order quantity. The answer tells you Economic order quantity.
Age 15Explain it to a 15-year-oldConnect it to the formula
The classic EOQ model assumes steady demand, constant order cost, immediate replenishment and constant annual holding cost per unit. The rule is EOQ = √(2DS ÷ H). Its input values are Annual unit demand (D), Cost per order (S), Annual holding cost per unit (H), and the main result is Economic order quantity. Try changing one number and watch what happens to Economic order quantity.
CollegeExplain it at college levelState the model precisely
This tool models one operating decision from explicitly supplied company assumptions. The implemented relation is EOQ = √(2DS ÷ H), evaluated from Annual unit demand (D), Cost per order (S), Annual holding cost per unit (H) to produce Economic order quantity. The classic EOQ model assumes steady demand, constant order cost, immediate replenishment and constant annual holding cost per unit. The model omits unentered taxes, cash timing, legal constraints and market uncertainty. Compare the output with company records and a downside scenario before committing resources.
The decision this tool supports
Calculate the order quantity that balances annual ordering and inventory holding costs.
Why the business model works
The classic EOQ model assumes steady demand, constant order cost, immediate replenishment and constant annual holding cost per unit.
Inputs and operating assumptions
This model uses Annual unit demand (D) (at least 0), Cost per order (S) (at least 0), Annual holding cost per unit (H) (at least 0.01). Keep currencies, accounting treatment and time periods consistent with one another.
The formula
EOQ = √(2DS ÷ H)
What the calculator produces
The primary output is Economic order quantity; it also exposes Orders per year, Average cycle inventory, Annual ordering plus holding cost. Change one assumption at a time so the comparison remains explainable.
Before using the result in a decision
This compact model cannot capture every tax, accounting, legal, market or operational condition. Compare the output with current company records, cash timing and the downside scenario before committing resources.
Supporting sourcesAcademic referencesPrimary standards, textbooks and complete citations
Standards, reading and academic references
Use the calculator as the worked interaction, then consult the primary standards and academic textbooks listed below. MW SysArc links to the original sources; the explanation on this page is original and does not reproduce them.
Introduction to Business 2e
Read the free OpenStax business textbookCite this book
- APA 7
- Gitman, L. J., McDaniel, C., Shah, A., Reece, M., Koffel, L., Talsma, B., & Hyatt, J. C. (2026). Introduction to business 2e. OpenStax. https://openstax.org/books/introduction-business-2e/pages/1-introduction
- MLA 9
- Gitman, Lawrence J., et al. Introduction to Business 2e. OpenStax, 2026, https://openstax.org/books/introduction-business-2e/pages/1-introduction.
- Chicago author-date
- Gitman, Lawrence J., Carl McDaniel, Amit Shah, Monique Reece, Linda Koffel, Bethann Talsma, and James C. Hyatt. 2026. Introduction to Business 2e. Houston, TX: OpenStax. https://openstax.org/books/introduction-business-2e/pages/1-introduction.
OpenStax entries are free to read online. Follow the licence shown on each linked source before redistributing or adapting its content.
Reuse the page responsiblyCite this pageAPA, MLA, Chicago, Harvard, BibTeX and RIS
These formats cite this calculator page itself. They are separate from the academic references above, which support the mathematical method and terminology.
APA 7
MW SysArc. (2026, July 21). Economic Order Quantity Calculator. MW SysArc Tools. https://business.mwsysarc.com/economic-order-quantity
MLA 9
MW SysArc. “Economic Order Quantity Calculator.” MW SysArc Tools, 21 July 2026, https://business.mwsysarc.com/economic-order-quantity. Accessed 30 Aug. 2026.
Chicago 17
MW SysArc. “Economic Order Quantity Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 30, 2026. https://business.mwsysarc.com/economic-order-quantity.
Harvard
MW SysArc (2026) ‘Economic Order Quantity Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://business.mwsysarc.com/economic-order-quantity (Accessed: 30 August 2026).
BibTeX and RIS records
BibTeX
@misc{mwsysarc_economic_order_quantity_2026,
author = {{MW SysArc}},
title = {Economic Order Quantity Calculator},
howpublished = {MW SysArc Tools},
year = {2026},
url = {https://business.mwsysarc.com/economic-order-quantity},
note = {Published July 21, 2026; accessed August 30, 2026}
}RIS
TY - ELEC
AU - MW SysArc
TI - Economic Order Quantity Calculator
T2 - MW SysArc Tools
PY - 2026
DA - 2026-07-21
Y2 - 2026-08-30
UR - https://business.mwsysarc.com/economic-order-quantity
N1 - Published July 21, 2026
ER -Clear answers
Frequently asked questions
What does the Economic order quantity do?
Calculate the order quantity that balances annual ordering and inventory holding costs.
How does the Economic order quantity work?
The calculator applies EOQ = √(2DS ÷ H). The classic EOQ model assumes steady demand, constant order cost, immediate replenishment and constant annual holding cost per unit.
What can I learn from the Economic order quantity?
It connects company inputs to a transparent business result. Change one value at a time to compare operating scenarios.
Does MW SysArc receive or store what I enter?
No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.
How should I use the result?
Use the result as a practical reference. Review the inputs, assumptions and stated limitations before relying on it.
Last reviewed . Calculations tested .