Calculator
Convert Tiny Concentrations And Rates
Convert between parts per billion (ppb), parts per million (ppm), permille, percent, and decimal values.
Formula: 1‰ = 1000 ppm = 1,000,000 ppb
Ratio Converter
Convert between permille, percent, decimal, basis points, ppm, and ppb.
Percent
Decimal
Basis points
PPM
PPB
What Your Result Means
This result maps your concentration or rate across ppm, ppb, permille, percent, and decimal. Use it to switch reporting scales without changing the underlying quantity.
FAQ
- Where is this converter used?
Air quality, water chemistry, manufacturing tolerance checks, and emissions reporting. - Can values exceed 1000‰?
For ratios and rates tied to a whole, permille usually ranges from 0 to 1000. For abstract concentration units, context matters.