EVERYDAY
Ratios & concentration
Dimensionless ratios, percentages and parts-per notation.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result0.0000001 %1 ppb = 0.0000001 %
EVERYDAY · ENGINEERING · SCIENCE
ppb to % Converter
Convert parts per billion (ppb) to percent (%). Enter a value for an instant result, or use the examples and reverse conversion below.
520units ready to convert
HOW IT IS CALCULATED
Convert through ratio
Enter a parts per billion value to calculate percent with full internal precision before display rounding.
Display PrecisionAuto · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| ratiofrom ppb | 1 | 0.000000001 |
| percentfrom ppb | % | 0.0000001 |
| per millefrom ppb | ‰ | 0.000001 |
| parts per millionfrom ppb | ppm | 0.001 |
| parts per billionfrom ppb | ppb | 1 |
| parts per trillionfrom ppb | ppt | 1000 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
ppb to % Conversion Reference
Parts Per Billion (ppb) and percent (%) are units of ratios & concentration. Use this page to convert in either direction.
Conversion Examples
| Parts Per Billion (ppb) | Percent (%) |
|---|---|
| 1 ppb | 0.0000001 % |
| 5 ppb | 0.0000005 % |
| 10 ppb | 0.000001 % |
| 100 ppb | 0.00001 % |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
% to ppb (percent to parts per billion)