Parts per million to parts per thousand
Type a value in ppm to get it in ppt instantly.
0.5ppt
That's about the same as the drinking water guideline. That is ordinary tap water, within the usual guidelines.
What it means
How pure is that water?
A TDS meter does not measure solids. It measures conductivity and multiplies, so anything dissolved that does not conduct — sugar, for instance — is invisible to it.
The math
How to convert ppm to ppt
To convert parts per million to parts per thousand, multiply by 0.001.
Example: 500 ppm × 0.001 = 0.5 ppt.
In the other direction, 1 ppt = 1,000 ppm.
The table below uses NaCl scale (× 0.5).
Every unit
Your reading in every unit
Tables
ppm to ppt conversion table
| ppm | ppt |
|---|---|
| 10 ppm | 0.01 ppt |
| 50 ppm | 0.05 ppt |
| 100 ppm | 0.1 ppt |
| 250 ppm | 0.25 ppt |
| 500 ppm | 0.5 ppt |
| 800 ppm | 0.8 ppt |
| 1,000 ppm | 1 ppt |
| 1,500 ppm | 1.5 ppt |
| 3,000 ppm | 3 ppt |
| 10,000 ppm | 10 ppt |
| 35,000 ppm | 35 ppt |
ppt to ppm conversion table
| ppt | ppm |
|---|---|
| 10 ppt | 10,000 ppm |
| 50 ppt | 50,000 ppm |
| 100 ppt | 100,000 ppm |
| 250 ppt | 250,000 ppm |
| 500 ppt | 500,000 ppm |
| 800 ppt | 800,000 ppm |
| 1,000 ppt | 1,000,000 ppm |
| 1,500 ppt | 1,500,000 ppm |
| 3,000 ppt | 3,000,000 ppm |
| 10,000 ppt | 10,000,000 ppm |
| 35,000 ppt | 35,000,000 ppm |
Quick answers
Quick answers
- How many ppt is 1 ppm?
- 1 ppm is 0.001 ppt.
- How many ppt is 10 ppm?
- 10 ppm is 0.01 ppt.
- How many ppt is 500 ppm?
- 500 ppm is 0.5 ppt.
The units
About these units
Parts per million (ppm)
Total dissolved solids, as a TDS meter reports it.
Parts per thousand (ppt)
How oceanographers report salinity. Seawater is 35.
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