Macroeconomics
Okun's Law Calculator
Estimate an unemployment-rate change from actual and potential output growth.
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Understand Okun's law
One idea, three depths
Choose how deeply to explain Okun's law
Okun's law: Estimate an unemployment-rate change from actual and potential output growth.
Age 5Explain it to a 5-year-oldStart with a picture
Imagine using Okun's law to answer this question: estimate an unemployment-rate change from actual and potential output growth? Enter Actual real GDP growth, Potential GDP growth, Okun coefficient, and 1 other input; the calculator shows Estimated unemployment-rate change. Try changing one number and watch what happens to Estimated unemployment-rate change. The answer tells you Estimated unemployment-rate change.
Age 15Explain it to a 15-year-oldConnect it to the formula
Okun's law is an empirical rule of thumb. Its coefficient varies across countries, periods and labour-market institutions. The rule is Change in unemployment = −Okun coefficient × (actual growth − potential growth). Its input values are Actual real GDP growth (%), Potential GDP growth (%), Okun coefficient, Starting unemployment rate (%), and the main result is Estimated unemployment-rate change. Try changing one number and watch what happens to Estimated unemployment-rate change.
CollegeExplain it at college levelState the model precisely
This calculator evaluates a macroeconomics relationship while holding unmodelled conditions constant. The implemented relation is Change in unemployment = −Okun coefficient × (actual growth − potential growth), evaluated from Actual real GDP growth (%), Potential GDP growth (%), Okun coefficient, Starting unemployment rate (%) to produce Estimated unemployment-rate change. Okun's law is an empirical rule of thumb. Its coefficient varies across countries, periods and labour-market institutions. The result depends on comparable definitions, units, populations and time periods. It estimates a relationship; it does not establish causation or replace current primary data.
The economic question
Estimate an unemployment-rate change from actual and potential output growth.
Why this relationship is useful
Okun's law is an empirical rule of thumb. Its coefficient varies across countries, periods and labour-market institutions.
Inputs that must be comparable
- Actual real GDP growth measured in %.
- Potential GDP growth measured in %.
- Okun coefficient (minimum 0).
- Starting unemployment rate (minimum 0) measured in %.
Use one market, firm, population and time period throughout; mixing definitions can make a correctly calculated number economically meaningless.
The model
Change in unemployment = −Okun coefficient × (actual growth − potential growth)
From inputs to output
The calculator combines Actual real GDP growth, Potential GDP growth, Okun coefficient, Starting unemployment rate and reportsEstimated unemployment-rate change together with Estimated new unemployment rate. Change one assumption at a time to identify what actually drives the estimate.
How to read Estimated unemployment-rate change
Read the sign, magnitude, unit and period together. The result quantifies the relationship in “estimate an unemployment-rate change from actual and potential output growth”; it does not by itself prove that one input caused another.
Where interpretation can fail
Do not use the result when the input definitions, units or formula assumptions do not match the real situation. This is an educational model, not financial, investment, tax or policy advice; verify material decisions against primary data and professional guidance.
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.
Principles of Economics 3e
Read the free OpenStax economics textbookCite this book
- APA 7
- Greenlaw, S. A., Shapiro, D., & MacDonald, D. (2022). Principles of economics 3e. OpenStax. https://openstax.org/books/principles-economics-3e/pages/1-introduction
- MLA 9
- Greenlaw, Steven A., et al. Principles of Economics 3e. OpenStax, 2022, https://openstax.org/books/principles-economics-3e/pages/1-introduction.
- Chicago author-date
- Greenlaw, Steven A., David Shapiro, and Daniel MacDonald. 2022. Principles of Economics 3e. Houston, TX: OpenStax. https://openstax.org/books/principles-economics-3e/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). Okun's Law Calculator. MW SysArc Tools. https://economics.mwsysarc.com/macro/okuns-law
MLA 9
MW SysArc. “Okun's Law Calculator.” MW SysArc Tools, 21 July 2026, https://economics.mwsysarc.com/macro/okuns-law. Accessed 31 Aug. 2026.
Chicago 17
MW SysArc. “Okun's Law Calculator.” MW SysArc Tools. Published July 21, 2026. Accessed August 31, 2026. https://economics.mwsysarc.com/macro/okuns-law.
Harvard
MW SysArc (2026) ‘Okun's Law Calculator’, MW SysArc Tools. Published 21 July 2026. Available at: https://economics.mwsysarc.com/macro/okuns-law (Accessed: 31 August 2026).
BibTeX and RIS records
BibTeX
@misc{mwsysarc_okuns_law_2026,
author = {{MW SysArc}},
title = {Okun's Law Calculator},
howpublished = {MW SysArc Tools},
year = {2026},
url = {https://economics.mwsysarc.com/macro/okuns-law},
note = {Published July 21, 2026; accessed August 31, 2026}
}RIS
TY - ELEC
AU - MW SysArc
TI - Okun's Law Calculator
T2 - MW SysArc Tools
PY - 2026
DA - 2026-07-21
Y2 - 2026-08-31
UR - https://economics.mwsysarc.com/macro/okuns-law
N1 - Published July 21, 2026
ER -Clear answers
Frequently asked questions
What does the Okun's law do?
Estimate an unemployment-rate change from actual and potential output growth.
How does the Okun's law work?
The calculator applies this formula: Change in unemployment = −Okun coefficient × (actual growth − potential growth). Okun's law is an empirical rule of thumb. Its coefficient varies across countries, periods and labour-market institutions.
What can I learn from the Okun's law?
It helps you explore the relationship described by this tool: Estimate an unemployment-rate change from actual and potential output growth. Change one input at a time to observe how it affects the result.
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 an estimate or educational aid. Check important financial, business or policy decisions with qualified sources and current data.
Last reviewed . Calculations tested .