Convert Milligrams per Liter to Pounds per Gallon
1 milligram per liter (mg/L) equals 0.000008345404452 pounds per gallon (lb/gal).
1 mg/L = 0.000008345404452 lb/gal
Type in either box. Scientific notation works: 1.5e-3.
Converting a list? Use the bulk milligram per liter to pound per gallon converter to paste a column from Excel.
How to Convert Milligram per Liter to Pound per Gallon
- 1 mg/L = 0.000008345404452 lb/gal
- 1 lb/gal = 119826.4273 mg/L
- Example: convert 15 mg/L to lb/gal: 15 mg/L = 15 × 0.000008345404452 lb/gal = 0.0001251810668 lb/gal
Reference conditions. lb/gal: Per US gallon (231 in³).
Formula
lb/gal = mg/L × 0.000008345404452019
or lb/gal = mg/L ÷ 119826.4273169
Derivation from SI units:
- 1 mg/L = 10⁻⁶ kg ÷ 10⁻³ m³ = 10⁻³ kg/m³
- 1 lb/gal = 0.45359237 kg ÷ 0.003785411784 m³ = 119.8264273 kg/m³
- 1 mg/L = 0.001 kg/m³ ÷ 119.8264273169 kg/m³ per lb/gal = 0.000008345404452019 lb/gal
Both units are defined exactly, so the factor is exact. Milligram per Liter definition: milligram per liter; Pound per Gallon definition: pound per gallon.
Worked examples
- A reading of 2 mg/L converts to 0.0000166908089 lb/gal.
2 mg/L × 0.000008345404452 = 0.0000166908089 lb/gal - A value of 50 mg/L is 0.0004172702226 lb/gal.
50 mg/L × 0.000008345404452 = 0.0004172702226 lb/gal
Milligram per Liter to Pound per Gallon conversion table
| Milligrams per Liter (mg/L) | Pounds per Gallon (lb/gal) |
|---|---|
| 0.01 mg/L | 8.345404452 × 10⁻⁸ lb/gal |
| 0.1 mg/L | 8.345404452 × 10⁻⁷ lb/gal |
| 0.5 mg/L | 0.000004172702226 lb/gal |
| 1 mg/L | 0.000008345404452 lb/gal |
| 2 mg/L | 0.0000166908089 lb/gal |
| 5 mg/L | 0.00004172702226 lb/gal |
| 8 mg/L | 0.00006676323562 lb/gal |
| 10 mg/L | 0.00008345404452 lb/gal |
| 50 mg/L | 0.0004172702226 lb/gal |
| 100 mg/L | 0.0008345404452 lb/gal |
| 250 mg/L | 0.002086351113 lb/gal |
| 500 mg/L | 0.004172702226 lb/gal |
| 1000 mg/L | 0.008345404452 lb/gal |
Where it's used
Milligrams per Liter are used for water quality (dissolved oxygen, nitrate, chlorine), while pounds per gallon appear in drilling-mud weight in the oil and gas industry (ppg). Both measure density (mass per unit volume) and mass concentration, so the conversion is a fixed factor.
Milligram per Liter to other density units
| Conversion | 1 mg/L equals |
|---|---|
| milligram per liter to kilogram per cubic meter | 0.001 kg/m³ |
| milligram per liter to gram per cubic centimeter | 0.000001 g/cm³ |
| milligram per liter to kilogram per liter | 0.000001 kg/L |
| milligram per liter to gram per liter | 0.001 g/L |
| milligram per liter to pound per cubic foot | 0.00006242796058 lb/ft³ |
| milligram per liter to pound per cubic inch | 3.6127292 × 10⁻⁸ lb/in³ |
| milligram per liter to pound per gallon | 0.000008345404452 lb/gal |
Frequently asked questions
How many pounds per gallon are in 1 milligram per liter?
1 mg/L = 0.000008345404452 lb/gal.
How do I convert milligrams per liter to pounds per gallon?
Multiply the value in mg/L by 0.000008345404452, or divide it by 119826.4273. For example, 15 mg/L × 0.000008345404452 = 0.0001251810668 lb/gal.
Is the mg/L to lb/gal conversion exact?
Yes. Both units are defined exactly, so the ratio is exact; its decimal form does not terminate and is shown here to 10 significant figures (more with the precision selector).
Sources
- The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 8 (litre) with SI prefix milli.
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound per gallon (U.S.)".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Convert Milligrams per Liter to Pounds per Gallon. Retrieved October 17, 2026, from https://scientificconverters.com/density/milligrams-per-liter-to-pounds-per-gallon/
IEEE
Scientific Converters, "Convert Milligrams per Liter to Pounds per Gallon," scientificconverters.com. Accessed: Oct. 17, 2026. [Online]. Available: https://scientificconverters.com/density/milligrams-per-liter-to-pounds-per-gallon/