1 milligram/liter (mg/L) equals 1,000 part/billion (ppb) (ppb). Enter any value below to convert from mg/L to ppb.
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1 mg/L = 1,000 ppb
All Concentration - Solution units
From 1 mg/L
Unit
Value
Kilogram/liter kg/L
0.000001
Gram/liter g/L
0.001
Milligram/liter mg/L
1
Part/million (ppm) ppm
1
Part/billion (ppb) ppb
1,000
Grain/gallon (US) gr/gal (US)
0.0584178313
Grain/gallon (UK) gr/gal (UK)
0.0701568926
Pound/gallon (US) lb/gal (US)
0.0000000083
Pound/gallon (UK) lb/gal (UK)
0.00000001
Pound/million gallon (US) lb/Mgal (US)
0.0083454045
Pound/cubic foot lb/ft³
0.0000000624
Pound/cubic inch lb/in³
0
Kilogram/cubic meter kg/m³
0.001
Gram/cubic meter g/m³
1
Milligram/cubic meter mg/m³
1,000
Recent conversions
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Formula
mg/L to ppb conversion formula
Use this relationship for a direct conversion:
ppb = mg/L x 1,000
Worked example
2 mg/L = 2,000 ppb.
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.
Quick reference
Milligram/liter to Part/billion (ppb) table
Milligram/liter (mg/L)
Part/billion (ppb) (ppb)
0.01
10
0.1
100
1
1,000
2
2,000
5
5,000
10
10,000
25
25,000
50
50,000
100
100,000
1,000
1,000,000
From unit
About the milligram/liter
Milligram/liter (mg/L) is a metric prefix submultiple of the Kilogram/liter (kg/L). 1 kg/L = 1,000,000 mg/L.
Symbol: mg/L
To unit
About the part/billion (ppb)
Part/billion (ppb) (ppb) is a unit of Concentration - Solution. 1 ppb = 1e-9 kg/L
How do you convert milligram/liter to part/billion (ppb)?
Use the formula ppb = mg/L x 1,000. 1 milligram/liter (mg/L) equals 1,000 part/billion (ppb) (ppb).
Is the mg/L to ppb conversion exact?
SI relationships follow the cited reference. Conventional and domain-specific factors use the established ConvertWin factor inventory; verify safety-critical work against the governing standard.