Mass concentration.
Milligrams per Gallon to Grams per Gallon Converter — mg/gal to g/gal
Convert Milligram per Gallon (mg/gal) to Gram per Gallon (g/gal) using the exact conversion factor (1 milligram per gallon = 0.001 gram per gallon). See the formula, worked examples, and conversion table.
Milligrams per Gallon to Grams per Gallon 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 / 0.2641720524.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Milligrams per Gallon to Grams per Gallon
Milligram per Gallon and Gram per Gallon 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 gallon = milligrams per gallon × 0.001
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 gallon equals 0.264172052358 base units, so dividing one by the other gives the direct milligram per gallon-to-gram per gallon factor of 0.001.
Simple example
1 mg/gal × 0.001 = 0.001 g/gal
1 milligram per gallon = 0.001 grams per gallon.
Real-world example
100 mg/gal × 0.001 = 0.1 g/gal
100 milligrams per gallon = 0.1 grams per gallon.
Conversion table
| Milligram per Gallon (mg/gal) | Gram per Gallon (g/gal) |
|---|---|
| 0.001 mg/gal | 0.000001 g/gal |
| 0.01 mg/gal | 0.00001 g/gal |
| 0.1 mg/gal | 0.0001 g/gal |
| 1 mg/gal | 0.001 g/gal |
| 10 mg/gal | 0.01 g/gal |
| 100 mg/gal | 0.1 g/gal |
Reverse conversion: Gram per Gallon to Milligram per Gallon
0.001 g/gal × 1000 = 1 mg/gal
0.001 grams per gallon = 1 milligram per gallon.
milligrams per gallon = grams per gallon × 1000
For a page dedicated to this direction, see Gram per Gallon to Milligram per Gallon.
Understanding the Milligram per Gallon (mg/gal)
Mass concentration.
Understanding the Gram per Gallon (g/gal)
Mass concentration.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per gallon are in 1 milligram per gallon?
1 milligram per gallon equals 0.001 grams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert milligram per gallon to gram per gallon?
Multiply the milligram per gallon value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert gram per gallon back to milligram per gallon?
Use the reverse factor: 1 gram per gallon equals 1,000 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 gallon?
Gram per Gallon (g/gal) is a unit of chemistry.
Is the milligram per gallon to gram per gallon conversion exact?
Yes. Both milligram per gallon and gram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.001 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.