Mass concentration.
Micrograms per Cubic Meter to Grams per Gallon Converter — ug/m3 to g/gal
Convert Microgram per Cubic Meter (ug/m3) to Gram per Gallon (g/gal) using the exact conversion factor (1 microgram per cubic meter = 3.785412e-9 gram per gallon). See the formula, worked examples, and conversion table.
Micrograms per Cubic Meter 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 1e-9 / 0.2641720524.
Mass Concentration units are compatible.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Cubic Meter to Grams per Gallon
Microgram per Cubic Meter 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 = micrograms per cubic meter × 3.785412e-9
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per cubic meter equals 1e-9 base units, and 1 gram per gallon equals 0.264172052358 base units, so dividing one by the other gives the direct microgram per cubic meter-to-gram per gallon factor of 3.785412e-9.
Simple example
1 ug/m3 × 3.785412e-9 = 3.785412e-9 g/gal
1 microgram per cubic meter = 3.785412e-9 grams per gallon.
Real-world example
100 ug/m3 × 3.785412e-9 = 3.785412e-7 g/gal
100 micrograms per cubic meter = 3.785412e-7 grams per gallon.
Conversion table
| Microgram per Cubic Meter (ug/m3) | Gram per Gallon (g/gal) |
|---|---|
| 0.001 ug/m3 | 3.785412e-12 g/gal |
| 0.01 ug/m3 | 3.785412e-11 g/gal |
| 0.1 ug/m3 | 3.785412e-10 g/gal |
| 1 ug/m3 | 3.785412e-9 g/gal |
| 10 ug/m3 | 3.785412e-8 g/gal |
| 100 ug/m3 | 3.785412e-7 g/gal |
Reverse conversion: Gram per Gallon to Microgram per Cubic Meter
3.785412e-9 g/gal × 264172052.4 = 1.000000057 ug/m3
3.785412e-9 grams per gallon = 1.000000057 micrograms per cubic meter.
micrograms per cubic meter = grams per gallon × 264172052.358
For a page dedicated to this direction, see Gram per Gallon to Microgram per Cubic Meter.
Understanding the Microgram per Cubic Meter (ug/m3)
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 microgram per cubic meter?
1 microgram per cubic meter equals 3.785412e-9 grams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per cubic meter to gram per gallon?
Multiply the microgram per cubic meter value by 3.785412e-9. The converter above does this instantly to whatever precision you set.
How do I convert gram per gallon back to microgram per cubic meter?
Use the reverse factor: 1 gram per gallon equals 264,172,052.4 micrograms per cubic meter. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per cubic meter?
Microgram per Cubic Meter (ug/m3) is a unit of chemistry.
What is a gram per gallon?
Gram per Gallon (g/gal) is a unit of chemistry.
Is the microgram per cubic meter to gram per gallon conversion exact?
Yes. Both microgram per cubic meter and gram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 3.785412e-9 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.