Natural Rate of Unemployment Calculator (NAIRU)
Calculate cyclical unemployment and estimate the GDP output gap from Okun's law by comparing the actual unemployment rate to the NAIRU (non-accelerating inflation rate of unemployment).
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Unemployment above (+) or below (−) the natural rate due to the business cycle
- 1
Output gap (Okun's law)
−2 × (5.5 − 4) = -3Each extra percentage point of cyclical unemployment implies roughly λ% of lost GDP output. - 2
Cyclical unemployment
5.5 − 4 = 1.50
How does this calculator work?
Cyclical unemployment = actual rate − NAIRU. GDP output gap ≈ −2 × cyclical unemployment (Okun's law, λ ≈ 2). The NAIRU (roughly 4–5% in the US in 2024 per the CBO) is the unemployment rate consistent with stable inflation, comprising frictional + structural unemployment. All values in this calculator are editable estimates.
Formula
How this is calculated
Full employment in macroeconomics does not mean zero unemployment. There is always a baseline "natural" rate — economists call it the NAIRU (Non-Accelerating Inflation Rate of Unemployment). It consists of frictional unemployment (people voluntarily between jobs) and structural unemployment (skills or location mismatch). The NAIRU is the unemployment rate consistent with stable, non-accelerating inflation; falling below it tends to push wages and prices up, while rising above it usually signals the economy is running below capacity.
Cyclical unemployment is the difference between the actual rate and the NAIRU. A positive value means the economy is in a downturn (actual > natural); a negative value means it is overheating (actual < natural). The output gap — how far real GDP is below or above its potential — is estimated via Okun's law: each extra percentage point of unemployment above the NAIRU corresponds to roughly 2% of lost GDP. The coefficient λ ≈ 2 is the classic Okun estimate for the US; European economies with rigid labour markets often have a lower coefficient (around 1–1.5).
The NAIRU cannot be observed directly — it is estimated by central banks and budget offices using complex models. The 2024 US Congressional Budget Office (CBO) estimate is approximately 4.4%. All inputs here are editable estimates. Adjust them to reflect your country, time period, and preferred estimate. The distribution curve centres on the natural rate and marks where actual unemployment falls.
Frequently asked questions
NAIRU stands for Non-Accelerating Inflation Rate of Unemployment — the unemployment rate at which inflation is stable. When unemployment falls below it, competition for workers pushes wages and then prices higher; when it rises above it, there is slack and inflation tends to ease. The US CBO estimated it at roughly 4.4% in 2024.
A negative output gap (actual unemployment above the natural rate) means the economy is producing less than its potential — spare capacity, weak investment, and above-average unemployment. A positive gap means demand exceeds supply potential, often associated with rising inflation and labour shortages.
No — Okun's law is a statistical regularity, not a physical constant. The coefficient varies by country, period, and recession depth. The classical estimate of λ ≈ 2 for the US comes from Arthur Okun's 1962 paper; more recent research puts the US value at 1.5–2.5, and European estimates are generally lower.
Also known as
TG we-Calculate Editorial Team. (2026). Natural Rate of Unemployment Calculator (NAIRU) [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/natural-rate-of-unemployment-calculator
TG we-Calculate Editorial Team. "Natural Rate of Unemployment Calculator (NAIRU)." TG we-Calculate. 2026. https://we-calculate.com/calculator/natural-rate-of-unemployment-calculator.
TG we-Calculate Editorial Team, "Natural Rate of Unemployment Calculator (NAIRU)," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/natural-rate-of-unemployment-calculator
@misc{wecalculate_natural_rate_of_unemployment_calculator, title = {Natural Rate of Unemployment Calculator (NAIRU)}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/natural-rate-of-unemployment-calculator}}, year = {2026}, note = {TG we-Calculate} }
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