Mass concentration.
Milligrams per Gallon to Grams per Liter Converter — mg/gal to g/L
Convert Milligram per Gallon (mg/gal) to Gram per Liter (g/L) using the exact conversion factor (1 milligram per gallon = 0.0002641721 gram per liter). See the formula, worked examples, conversion table, and common uses.
Milligrams per Gallon to Grams per Liter converter
Converter
Chemistry Converter
Convert concentration, molarity, amount, and laboratory scientific units by compatible family.
Context values
Some unit families need one extra value for a physically accurate result.
Mass concentration.
Result = input x 0.0002641720524 / 1.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Gallon to Grams per Liter
Milligram per Gallon and Gram per Liter both measure mass concentration — how much of a substance is dissolved or dispersed in a given volume — a core calculation for preparing lab solutions, checking water quality against a regulatory limit, or formulating a pharmaceutical dose. Both are mass concentration units.
Formula
grams per liter = milligrams per gallon × 0.000264172052358
This factor comes from each unit's defined relationship to the category's base unit: 1 milligram per gallon equals 0.000264172052358 base units, and 1 gram per liter equals 1 base unit, so dividing one by the other gives the direct milligram per gallon-to-gram per liter factor of 0.000264172052358.
Simple example
1 mg/gal × 0.0002641720524 = 0.0002641721 g/L
1 milligram per gallon = 0.0002641721 grams per liter.
Real-world example
100 mg/gal × 0.0002641720524 = 0.0264172052 g/L
100 milligrams per gallon = 0.0264172052 grams per liter.
Conversion table
| Milligram per Gallon (mg/gal) | Gram per Liter (g/L) |
|---|---|
| 0.001 mg/gal | 2.641721e-7 g/L |
| 0.01 mg/gal | 0.0000026417 g/L |
| 0.1 mg/gal | 0.0000264172 g/L |
| 1 mg/gal | 0.0002641721 g/L |
| 10 mg/gal | 0.0026417205 g/L |
| 100 mg/gal | 0.0264172052 g/L |
Reverse conversion: Gram per Liter to Milligram per Gallon
0.0002641721 g/L × 3785.411784 = 1.00000018 mg/gal
0.0002641721 grams per liter = 1.00000018 milligrams per gallon.
milligrams per gallon = grams per liter × 3785.411784
For a page dedicated to this direction, see Gram per Liter to Milligram per Gallon.
Understanding the Milligram per Gallon (mg/gal)
Mass concentration.
Understanding the Gram per Liter
Gram per Liter (g/L) measures mass concentration. One gram of a substance dissolved or dispersed per liter of total solution or mixture volume. It is classified as a metric derived concentration unit.
Where it's used: Standard unit for water-quality and laboratory concentration reporting worldwide
Uses of the Gram per Liter today
- Water-quality and environmental testing standards
- Laboratory solution preparation
- Beverage and food-industry concentration specifications
Gram per Liter — sources
- BIPM SI Brochure — Gram and litre as accepted units used to express mass concentration.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per liter are in 1 milligram per gallon?
1 milligram per gallon equals 0.0002641721 grams per liter, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per gallon to gram per liter?
Multiply the milligram per gallon value by 0.0002641720524. The converter above does this instantly to whatever precision you set.
How do I convert gram per liter back to milligram per gallon?
Use the reverse factor: 1 gram per liter equals 3,785.411784 milligrams per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a milligram per gallon?
Milligram per Gallon (mg/gal) is a unit of chemistry.
What is a gram per liter?
Gram per Liter (g/L) measures mass concentration. One gram of a substance dissolved or dispersed per liter of total solution or mixture volume. It is classified as a metric derived concentration unit.
Is the milligram per gallon to gram per liter conversion exact?
Yes. Both milligram per gallon and gram per liter are defined by fixed standards rather than physical artifacts, so the factor of 0.0002641720524 used above is exact to as many digits as you choose to display.
What's the difference between mass concentration and molarity?
Mass concentration expresses how much mass of a substance is present per unit volume (for example, grams per liter). Molarity expresses the amount in moles per liter instead, which accounts for the substance's molecular weight. This category converts mass-concentration units.