PPM to PPB converter (ppm to ppb)
Convert PPM (ppm) to PPB (ppb) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
How to convert PPM to PPB
1 ppm = 1000 ppb.
ppb = ppm × 1000
Multiply ppm by 1000:
Example: Convert 1 ppm to ppb:
1 × 1000 = 1000 ppb
What is a PPM?
The PPM (ppm) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
What is a PPB?
The PPB (ppb) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
This page converts number systems from PPM into PPB. One ppm equals 1000 ppb.
PPM to PPB conversion table
Common ppm values and the matching ppb result, calculated with the same factor as the widget. Highlight a nearby row if you want a quick check without entering a number.
| PPM (ppm) | PPB (ppb) |
|---|---|
| 0.001 ppm | 1 ppb |
| 0.01 ppm | 10 ppb |
| 0.1 ppm | 100 ppb |
| 1 ppm | 1000 ppb |
| 10 ppm | 10000 ppb |
| 100 ppm | 100000 ppb |
| 1000 ppm | 1000000 ppb |
How this calculator works
The form on this page is a PPM-to-PPB converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the ppb result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many ppb are in 1 ppm?
1 ppm = 1000 ppb.
How do I convert PPM to PPB?
Multiply ppm by 1000:
Is this ppm to ppb converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.