Mass per volume density.
Micrograms per Gallon to Hectograms per Gallon Converter — ug/gal to hg/gal
Convert Microgram per Gallon (ug/gal) to Hectogram per Gallon (hg/gal) using the exact conversion factor (1 microgram per gallon = 1e-8 hectogram per gallon). See the formula, worked examples, and conversion table.
Micrograms per Gallon to Hectograms per Gallon 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 2.64172052e-7 / 26.41720524.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micrograms per Gallon to Hectograms per Gallon
Microgram per Gallon and Hectogram per Gallon 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
hectograms per gallon = micrograms per gallon × 1e-8
This factor comes from each unit's defined relationship to the category's base unit: 1 microgram per gallon equals 2.641721e-7 base units, and 1 hectogram per gallon equals 26.4172052358 base units, so dividing one by the other gives the direct microgram per gallon-to-hectogram per gallon factor of 1e-8.
Simple example
1 ug/gal × 1e-8 = 1e-8 hg/gal
1 microgram per gallon = 1e-8 hectograms per gallon.
Real-world example
1,000 ug/gal × 1e-8 = 0.00001 hg/gal
1,000 micrograms per gallon = 0.00001 hectograms per gallon.
Conversion table
| Microgram per Gallon (ug/gal) | Hectogram per Gallon (hg/gal) |
|---|---|
| 0.1 ug/gal | 1e-9 hg/gal |
| 1 ug/gal | 1e-8 hg/gal |
| 10 ug/gal | 1e-7 hg/gal |
| 100 ug/gal | 0.000001 hg/gal |
| 1,000 ug/gal | 0.00001 hg/gal |
| 10,000 ug/gal | 0.0001 hg/gal |
Reverse conversion: Hectogram per Gallon to Microgram per Gallon
1e-8 hg/gal × 100000000 = 1 ug/gal
1e-8 hectograms per gallon = 1 micrograms per gallon.
micrograms per gallon = hectograms per gallon × 100000000
For a page dedicated to this direction, see Hectogram per Gallon to Microgram per Gallon.
Understanding the Microgram per Gallon (ug/gal)
Mass per volume density.
Understanding the Hectogram per Gallon (hg/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectograms per gallon are in 1 microgram per gallon?
1 microgram per gallon equals 1e-8 hectograms per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert microgram per gallon to hectogram per gallon?
Multiply the microgram per gallon value by 1e-8. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per gallon back to microgram per gallon?
Use the reverse factor: 1 hectogram per gallon equals 100,000,000 micrograms per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a microgram per gallon?
Microgram per Gallon (ug/gal) is a unit of density.
What is a hectogram per gallon?
Hectogram per Gallon (hg/gal) is a unit of density.
Is the microgram per gallon to hectogram per gallon conversion exact?
Yes. Both microgram per gallon and hectogram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 1e-8 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.