Mass per volume density.
Carats per Milliliter to Pounds per Gallon Converter — ct/mL to lb/gal
Convert Carat per Milliliter (ct/mL) to Pound per Gallon (lb/gal) using the exact conversion factor (1 carat per milliliter = 1.66908089 pound per gallon). See the formula, worked examples, conversion table, and common uses.
Carats per Milliliter to Pounds 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 200 / 119.8264273.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Carats per Milliliter to Pounds per Gallon
Carat per Milliliter and Pound 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
pounds per gallon = carats per milliliter × 1.6690808904
This factor comes from each unit's defined relationship to the category's base unit: 1 carat per milliliter equals 200 base units, and 1 pound per gallon equals 119.826427317 base units, so dividing one by the other gives the direct carat per milliliter-to-pound per gallon factor of 1.6690808904.
Simple example
1 ct/mL × 1.66908089 = 1.66908089 lb/gal
1 carat per milliliter = 1.66908089 pounds per gallon.
Real-world example
1,000 ct/mL × 1.66908089 = 1,669.08089 lb/gal
1,000 carats per milliliter = 1,669.08089 pounds per gallon.
Conversion table
| Carat per Milliliter (ct/mL) | Pound per Gallon (lb/gal) |
|---|---|
| 0.1 ct/mL | 0.166908089 lb/gal |
| 1 ct/mL | 1.66908089 lb/gal |
| 10 ct/mL | 16.6908089 lb/gal |
| 100 ct/mL | 166.908089 lb/gal |
| 1,000 ct/mL | 1,669.08089 lb/gal |
| 10,000 ct/mL | 16,690.8089 lb/gal |
Reverse conversion: Pound per Gallon to Carat per Milliliter
1.66908089 lb/gal × 0.5991321366 = 0.9999999998 ct/mL
1.66908089 pounds per gallon = 0.9999999998 carats per milliliter.
carats per milliliter = pounds per gallon × 0.599132136584
For a page dedicated to this direction, see Pound per Gallon to Carat per Milliliter.
Understanding the Carat per Milliliter (ct/mL)
Mass per volume density.
Understanding the Pound per Gallon
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Where it's used: United States (paint, fuel, and industrial liquid density specifications)
lb/gal vs. lb/ft³. Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.
Uses of the Pound per Gallon today
- US paint and coatings density specifications
- US fuel and petroleum liquid density specs
- Industrial liquid handling and shipping weight calculations
Pound per Gallon — sources
- NIST Handbook 44 — General tables of units including US customary density measures.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many pounds per gallon are in 1 carat per milliliter?
1 carat per milliliter equals 1.66908089 pounds per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert carat per milliliter to pound per gallon?
Multiply the carat per milliliter value by 1.66908089. The converter above does this instantly to whatever precision you set.
How do I convert pound per gallon back to carat per milliliter?
Use the reverse factor: 1 pound per gallon equals 0.5991321366 carats per milliliter. You can also use the swap control in the converter above to flip the direction instantly.
What is a carat per milliliter?
Carat per Milliliter (ct/mL) is a unit of density.
What is a pound per gallon?
Pound per Gallon (lb/gal) measures density. The US customary unit for liquid density, based on the US gallon (231 cubic inches). It is classified as a US customary density unit.
Is the carat per milliliter to pound per gallon conversion exact?
Yes. Both carat per milliliter and pound per gallon are defined by fixed standards rather than physical artifacts, so the factor of 1.66908089 used above is exact to as many digits as you choose to display.
What is the difference between lb/gal vs. lb/ft³?
Both are US customary density units; they're related through the real, fixed relationship between the US gallon and the cubic foot (1 cubic foot ≈ 7.48 US gallons), not a round conversion factor.