Convert Between Units of Unitless
Unitless conversions support interpretation of ratios, coefficients, and normalized values.
Popular Unitless Conversions
Based on conversions run in the last 60 days.
- ppb to ppm · 1
About Unitless Conversions
Helpful context and notes for converting Unitless units.
Unitless quantities appear across engineering disciplines in formulas, charts, and reports.
Even unitless values can be misinterpreted. Clearly document meaning and context when reporting results.
Frequently Asked Questions
Unitless conversions are exact but depend on correct interpretation of the underlying quantity.
Yes, but context and definition are critical.
Examples include ratios, coefficients, and normalized values.
Misinterpretation can lead to incorrect conclusions.
They may be dimensionless mathematically but still carry physical meaning.
Fun Fact
A computer 'mickey' is 0.1 millimeter — the scientific unit of 'my mouse moved but I swear I didn’t touch it.'
Supported Units
Common and engineering-specific units supported for this conversion.
- 1 (Ones)
- ppb (Parts per Billions)
- ppm (Parts per Millions)
- ppt (Parts per Trillions)
- % (Percents)
Unit Categories
Explore the types of units you can convert on this site.