Mass per volume density.
Hectograms per Gallon to Grams per Imperial gallon Converter — hg/gal to g/imp gal
Convert Hectogram per Gallon (hg/gal) to Gram per Imperial gallon (g/imp gal) using the exact conversion factor (1 hectogram per gallon = 120.0949926 gram per imperial gallon). See the formula, worked examples, and conversion table.
Hectograms per Gallon to Grams per Imperial 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 26.41720524 / 0.2199692483.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectograms per Gallon to Grams per Imperial gallon
Hectogram per Gallon and Gram per Imperial 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
grams per imperial gallon = hectograms per gallon × 120.09499255
This factor comes from each unit's defined relationship to the category's base unit: 1 hectogram per gallon equals 26.4172052358 base units, and 1 gram per imperial gallon equals 0.219969248299 base units, so dividing one by the other gives the direct hectogram per gallon-to-gram per imperial gallon factor of 120.09499255.
Simple example
1 hg/gal × 120.0949926 = 120.0949926 g/imp gal
1 hectogram per gallon = 120.0949926 grams per imperial gallon.
Real-world example
1,000 hg/gal × 120.0949926 = 120,094.9926 g/imp gal
1,000 hectograms per gallon = 120,094.9926 grams per imperial gallon.
Conversion table
| Hectogram per Gallon (hg/gal) | Gram per Imperial gallon (g/imp gal) |
|---|---|
| 0.1 hg/gal | 12.00949926 g/imp gal |
| 1 hg/gal | 120.0949926 g/imp gal |
| 10 hg/gal | 1,200.949926 g/imp gal |
| 100 hg/gal | 12,009.49926 g/imp gal |
| 1,000 hg/gal | 120,094.9926 g/imp gal |
| 10,000 hg/gal | 1,200,949.926 g/imp gal |
Reverse conversion: Gram per Imperial gallon to Hectogram per Gallon
120.0949926 g/imp gal × 0.008326741846 = 1 hg/gal
120.0949926 grams per imperial gallon = 1 hectograms per gallon.
hectograms per gallon = grams per imperial gallon × 0.00832674184629
For a page dedicated to this direction, see Gram per Imperial gallon to Hectogram per Gallon.
Understanding the Hectogram per Gallon (hg/gal)
Mass per volume density.
Understanding the Gram per Imperial gallon (g/imp gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per imperial gallon are in 1 hectogram per gallon?
1 hectogram per gallon equals 120.0949926 grams per imperial gallon, using the exact defined conversion factor rather than an estimate.
How do I convert hectogram per gallon to gram per imperial gallon?
Multiply the hectogram per gallon value by 120.0949926. The converter above does this instantly to whatever precision you set.
How do I convert gram per imperial gallon back to hectogram per gallon?
Use the reverse factor: 1 gram per imperial gallon equals 0.0083267418 hectograms per gallon. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectogram per gallon?
Hectogram per Gallon (hg/gal) is a unit of density.
What is a gram per imperial gallon?
Gram per Imperial gallon (g/imp gal) is a unit of density.
Is the hectogram per gallon to gram per imperial gallon conversion exact?
Yes. Both hectogram per gallon and gram per imperial gallon are defined by fixed standards rather than physical artifacts, so the factor of 120.0949926 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.