Mass per volume density.
Pounds per Cup to Megagrams per Gallon Converter — lb/cup to Mg/gal
Convert Pound per Cup (lb/cup) to Megagram per Gallon (Mg/gal) using the exact conversion factor (1 pound per cup = 0.0072574779 megagram per gallon). See the formula, worked examples, and conversion table.
Pounds per Cup to Megagrams 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 1917.222837 / 264172.0524.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cup to Megagrams per Gallon
Pound per Cup and Megagram 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
megagrams per gallon = pounds per cup × 0.00725747792
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cup equals 1917.22283707 base units, and 1 megagram per gallon equals 264172.052358 base units, so dividing one by the other gives the direct pound per cup-to-megagram per gallon factor of 0.00725747792.
Simple example
1 lb/cup × 0.00725747792 = 0.0072574779 Mg/gal
1 pound per cup = 0.0072574779 megagrams per gallon.
Real-world example
1,000 lb/cup × 0.00725747792 = 7.25747792 Mg/gal
1,000 pounds per cup = 7.25747792 megagrams per gallon.
Conversion table
| Pound per Cup (lb/cup) | Megagram per Gallon (Mg/gal) |
|---|---|
| 0.1 lb/cup | 0.0007257478 Mg/gal |
| 1 lb/cup | 0.0072574779 Mg/gal |
| 10 lb/cup | 0.0725747792 Mg/gal |
| 100 lb/cup | 0.725747792 Mg/gal |
| 1,000 lb/cup | 7.25747792 Mg/gal |
| 10,000 lb/cup | 72.5747792 Mg/gal |
Reverse conversion: Megagram per Gallon to Pound per Cup
0.0072574779 Mg/gal × 137.7889139 = 0.9999999972 lb/cup
0.0072574779 megagrams per gallon = 0.9999999972 pounds per cup.
pounds per cup = megagrams per gallon × 137.788913866
For a page dedicated to this direction, see Megagram per Gallon to Pound per Cup.
Understanding the Pound per Cup (lb/cup)
Mass per volume density.
Understanding the Megagram per Gallon (Mg/gal)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many megagrams per gallon are in 1 pound per cup?
1 pound per cup equals 0.0072574779 megagrams per gallon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to megagram per gallon?
Multiply the pound per cup value by 0.00725747792. The converter above does this instantly to whatever precision you set.
How do I convert megagram per gallon back to pound per cup?
Use the reverse factor: 1 megagram per gallon equals 137.7889139 pounds per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
What is a megagram per gallon?
Megagram per Gallon (Mg/gal) is a unit of density.
Is the pound per cup to megagram per gallon conversion exact?
Yes. Both pound per cup and megagram per gallon are defined by fixed standards rather than physical artifacts, so the factor of 0.00725747792 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.