How this calculator works
Even in a healthy labour market some people are between jobs and some lack the skills that current vacancies require. Frictional unemployment covers the search and matching that takes time, and structural unemployment covers mismatches between the skills or locations employers need and those workers offer. Dividing their sum by the labour force gives the natural rate: the unemployment rate consistent with stable inflation and no cyclical shortfall in demand. It is an estimate built from labour market structure, not a measured constant, and it moves with benefits, matching technology, demographics and minimum wages. Cyclical unemployment from a recession sits on top of this rate.
Formula
Natural rate of unemployment = (frictionally unemployed + structurally unemployed) / labour force. The frictional and structural rates divide each group by the labour force. Rearranged, frictionally unemployed = natural rate x labour force - structurally unemployed, and the labour force = (frictional + structural) / natural rate.
Worked example
With 0.7 million frictionally unemployed, 0.5 million structurally unemployed and a labour force of 20 million, the natural rate is 1.2 / 20 = 6%. Frictional unemployment accounts for 3.5 percentage points and structural unemployment for 2.5 points.
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Frequently asked questions
Is the natural rate the lowest unemployment possible?
No. It is the rate at which inflation is expected to stay stable, not a floor. Actual unemployment can run below it for a time when demand is strong, but inflation usually accelerates.
Does this measure cyclical unemployment?
No. The natural rate excludes cyclical unemployment from a demand shortfall. Actual unemployment minus the natural rate is the cyclical part, which is what Okun's law links to the output gap.
Why are the inputs in millions?
Labour forces and unemployment counts are usually published in thousands or millions. Entering millions keeps the arithmetic readable; the ratio is the same whatever unit you use consistently.