The table below shows conversions between water conductivity and resistivity. It also converts resistivity to conductivity, and to parts per million or milligrams per liter (ppm, mg/L).
Water Quality Conductivity Conversion Table
mg/LSodiumChloride |
Total DissolvedSolids asmg/L CaCO3 |
SpecificConductance(Microsiemens/cm) |
SpecificResistanceMegaohm Ω |
Grainsper GallonSodium Chloride |
0.05 |
0.043 |
0.105 |
9.5238 |
0.0029 |
0.1 |
0.085 |
0.212 |
4.71698 |
0.0060 |
0.2 |
0.170 |
0.424 |
3.55849 |
0.012 |
0.3 |
0.255 |
0.637 |
1.56985 |
0.018 |
0.4 |
0.340 |
0.848 |
1.17924 |
0.023 |
0.5 |
0.425 |
1.06 |
0.943396 |
0.029 |
0.6 |
0.510 |
1.273 |
0.785545 |
0.035 |
0.7 |
0.595 |
1.985 |
0.6734 |
0.041 |
0.8 |
0.680 |
1.696 |
0.589622 |
0.047 |
0.9 |
0.765 |
1.908 |
0.524109 |
0.053 |
1 |
0.85 |
2.12 |
0.471698 |
0.06 |
2 |
1.70 |
4.24 |
0.235849 |
0.12 |
3 |
2.55 |
6.37 |
0.156985 |
0.18 |
4 |
3.40 |
8.48 |
0.117924 |
0.23 |
5 |
4.25 |
10.6 |
0.094339 |
0.29 |
6 |
5.10 |
12.73 |
0.078554 |
0.35 |
7 |
5.95 |
14.85 |
0.06734 |
0.41 |
8 |
6.80 |
16.96 |
0.058962 |
0.47 |
9 |
7.65 |
19.08 |
0.05241 |
0.53 |
10 |
8.5 |
21.2 |
0.047169 |
0.58 |
20 |
17.0 |
42.4 |
0.023584 |
1.17 |
30 |
25.5 |
63.7 |
0.015698 |
1.75 |
40 |
34.0 |
84.8 |
0.011792 |
2.34 |
50 |
42.5 |
106.0 |
0.009433 |
2.92 |
60 |
51.0 |
127.3 |
0.007855 |
3.51 |
70 |
59.5 |
148.5 |
0.006734 |
4.09 |
80 |
68.0 |
169.6 |
0.005896 |
4.68 |
90 |
76.5 |
190.8 |
0.005241 |
|
100 |
85 |
212 |
0.004716 |
5.85 |
200 |
170 |
410 |
0.002439 |
11.70 |
300 |
255 |
610 |
0.001639 |
17.5 |
400 |
340 |
812 |
0.001231 |
23.4 |
500 |
425 |
1,008 |
0.000992 |
29.2 |
600 |
510 |
1,206 |
0.000829 |
35.1 |
700 |
595 |
1,410 |
0.000709 |
40.9 |
800 |
680 |
1,605 |
0.000623 |
46.8 |
900 |
765 |
1,806 |
0.000553 |
52.6 |
1,000 |
850 |
2,000 |
0.0005 |
58.5 |
2,000 |
1700 |
3,830 |
0.000261 |
117 |
3,000 |
2550 |
5,760 |
0.000176 |
175 |
4,000 |
3400 |
7,500 |
0.000133 |
234 |
5,000 |
4250 |
9,240 |
0.000108 |
292 |
6,000 |
5100 |
10,950 |
0.000091 |
351 |
7,000 |
5950 |
12,650 |
0.000079 |
409 |
8,000 |
6800 |
14,340 |
0.000069 |
468 |
9,000 |
7650 |
16,000 |
0.000062 |
526 |
10,000 |
8500 |
17,600 |
0.000056 |
585 |
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