Suspended solids to nephelometric turbidity units
Type a value in mg/L to get it in NTU instantly.
2.128NTU
That's 7.1× as cloudy as treated drinking water, while the drinking water limit is 2.4× cloudier. That is within the usual drinking water limit.
Convert the other way: NTU to mg/L
What it means
How cloudy is it?
Suspended solids and Secchi depth are correlations, not conversions: the same NTU from fine clay and from algae gives quite different figures.
The math
How to convert mg/L to NTU
To convert suspended solids to nephelometric turbidity units, multiply by 0.425532.
Example: 5 mg/L × 0.425532 = 2.12766 NTU.
In the other direction, 1 NTU = 2.35 mg/L.
Every unit
Your turbidity in every unit
Tables
mg/L to NTU conversion table
| mg/L | NTU |
|---|---|
| 0.1 mg/L | 0.0425532 NTU |
| 0.3 mg/L | 0.12766 NTU |
| 1 mg/L | 0.425532 NTU |
| 4 mg/L | 1.70213 NTU |
| 5 mg/L | 2.12766 NTU |
| 10 mg/L | 4.25532 NTU |
| 50 mg/L | 21.2766 NTU |
| 100 mg/L | 42.5532 NTU |
| 500 mg/L | 212.766 NTU |
| 1,000 mg/L | 425.532 NTU |
| 4,000 mg/L | 1,702.13 NTU |
NTU to mg/L conversion table
| NTU | mg/L |
|---|---|
| 0.1 NTU | 0.235 mg/L |
| 0.3 NTU | 0.705 mg/L |
| 1 NTU | 2.35 mg/L |
| 4 NTU | 9.4 mg/L |
| 5 NTU | 11.75 mg/L |
| 10 NTU | 23.5 mg/L |
| 50 NTU | 117.5 mg/L |
| 100 NTU | 235 mg/L |
| 500 NTU | 1,175 mg/L |
| 1,000 NTU | 2,350 mg/L |
| 4,000 NTU | 9,400 mg/L |
Quick answers
Quick answers
- How many NTU is 1 mg/L?
- 1 mg/L is 0.425532 NTU.
- How many NTU is 10 mg/L?
- 10 mg/L is 4.25532 NTU.
- How many NTU is 5 mg/L?
- 5 mg/L is 2.12766 NTU.
The units
About these units
Suspended solids (mg/L)
Roughly correlated: about 2.35 mg/L per NTU.
Nephelometric turbidity units (NTU)
The standard, measured by scattering at 90 degrees.
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