Micrograms per cubic meter to parts per billion
Type a value in µg/m³ to get it in ppb instantly.
43.65ppb
Nothing on our list is smaller: clean country air is 11× higher. That is about one molecule of it in every 22,910,000 of air.
Convert the other way: ppb to µg/m³
What it means
What is in the air?
Weight-per-volume figures assume 25 °C and one atmosphere. A hot or high-altitude measurement needs its own molar volume.
The math
How to convert µg/m³ to ppb
Volume becomes weight through the molar mass: mg/m³ = ppm × molar mass ÷ 24.45 at 25 °C. The figures below use the gas selected above.
Example: 50 µg/m³ = 43.6451 ppb.
The table below is for Carbon monoxide, CO (28.01 g/mol), using its molar mass.
Every unit
Your concentration in every unit
Tables
µg/m³ to ppb conversion table
| µg/m³ | ppb |
|---|---|
| 0.1 µg/m³ | 0.0872903 ppb |
| 0.5 µg/m³ | 0.436451 ppb |
| 1 µg/m³ | 0.872903 ppb |
| 5 µg/m³ | 4.36451 ppb |
| 10 µg/m³ | 8.72903 ppb |
| 25 µg/m³ | 21.8226 ppb |
| 50 µg/m³ | 43.6451 ppb |
| 100 µg/m³ | 87.2903 ppb |
| 200 µg/m³ | 174.581 ppb |
| 500 µg/m³ | 436.451 ppb |
| 1,000 µg/m³ | 872.903 ppb |
ppb to µg/m³ conversion table
| ppb | µg/m³ |
|---|---|
| 0.1 ppb | 0.11456 µg/m³ |
| 0.5 ppb | 0.572802 µg/m³ |
| 1 ppb | 1.1456 µg/m³ |
| 5 ppb | 5.72802 µg/m³ |
| 10 ppb | 11.456 µg/m³ |
| 25 ppb | 28.6401 µg/m³ |
| 50 ppb | 57.2802 µg/m³ |
| 100 ppb | 114.56 µg/m³ |
| 200 ppb | 229.121 µg/m³ |
| 500 ppb | 572.802 µg/m³ |
| 1,000 ppb | 1,145.6 µg/m³ |
Quick answers
Quick answers
- How many ppb is 1 µg/m³?
- 1 µg/m³ is 0.872903 ppb.
- How many ppb is 10 µg/m³?
- 10 µg/m³ is 8.72903 ppb.
- How many ppb is 50 µg/m³?
- 50 µg/m³ is 43.6451 ppb.
The units
About these units
Micrograms per cubic meter (µg/m³)
The air quality standard for outdoor pollution.
Parts per billion (ppb)
For trace pollutants such as ozone and nitrogen dioxide.
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