Mass per volume density.
Milligrams per Gallon to Decigrams per Liter Converter — mg/gal to dg/L
Convert Milligram per Gallon (mg/gal) to Decigram per Liter (dg/L) using the exact conversion factor (1 milligram per gallon = 0.0026417205 decigram per liter). See the formula, worked examples, and conversion table.
Milligrams per Gallon to Decigrams per Liter converter
Converter
Density Converter
Convert thousands of mass-per-volume density combinations for science, engineering, agriculture, and fluids.
Context values
Some unit families need one extra value for a physically accurate result.
Mass per volume density.
Result = input x 0.0002641720524 / 0.1.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Gallon to Decigrams per Liter
Milligram per Gallon and Decigram per Liter both measure density — mass per unit volume — a property used to identify materials, check manufacturing quality, and predict whether something floats or sinks. As a fixed reference point, water has a density of exactly 1000 kg/m³ (1 g/cm³, 1 g/mL) at its temperature of maximum density, which is why many density figures in science and engineering are quoted relative to water. Both are mass per volume density units.
Formula
decigrams per liter = milligrams per gallon × 0.00264172052358
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 decigram per liter equals 0.1 base units, so dividing one by the other gives the direct milligram per gallon-to-decigram per liter factor of 0.00264172052358.
Simple example
1 mg/gal × 0.002641720524 = 0.0026417205 dg/L
1 milligram per gallon = 0.0026417205 decigrams per liter.
Real-world example
1,000 mg/gal × 0.002641720524 = 2.641720524 dg/L
1,000 milligrams per gallon = 2.641720524 decigrams per liter.
Conversion table
| Milligram per Gallon (mg/gal) | Decigram per Liter (dg/L) |
|---|---|
| 0.1 mg/gal | 0.0002641721 dg/L |
| 1 mg/gal | 0.0026417205 dg/L |
| 10 mg/gal | 0.0264172052 dg/L |
| 100 mg/gal | 0.2641720524 dg/L |
| 1,000 mg/gal | 2.641720524 dg/L |
| 10,000 mg/gal | 26.41720524 dg/L |
Reverse conversion: Decigram per Liter to Milligram per Gallon
0.0026417205 dg/L × 378.5411784 = 0.9999999911 mg/gal
0.0026417205 decigrams per liter = 0.9999999911 milligrams per gallon.
milligrams per gallon = decigrams per liter × 378.5411784
For a page dedicated to this direction, see Decigram per Liter to Milligram per Gallon.
Understanding the Milligram per Gallon (mg/gal)
Mass per volume density.
Understanding the Decigram per Liter (dg/L)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many decigrams per liter are in 1 milligram per gallon?
1 milligram per gallon equals 0.0026417205 decigrams per liter, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per gallon to decigram per liter?
Multiply the milligram per gallon value by 0.002641720524. The converter above does this instantly to whatever precision you set.
How do I convert decigram per liter back to milligram per gallon?
Use the reverse factor: 1 decigram per liter equals 378.5411784 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 density.
What is a decigram per liter?
Decigram per Liter (dg/L) is a unit of density.
Is the milligram per gallon to decigram per liter conversion exact?
Yes. Both milligram per gallon and decigram per liter are defined by fixed standards rather than physical artifacts, so the factor of 0.002641720524 used above is exact to as many digits as you choose to display.
What's the difference between density and mass concentration?
Density is the mass of a pure substance or material per unit volume. Mass concentration is the mass of one component — like a dissolved solute — within a mixture's total volume. The two use the same kind of units but describe different physical situations.