Mass per volume density.
Pounds per Tablespoon to Grams per Cup Converter — lb/tbsp to g/cup
Convert Pound per Tablespoon (lb/tbsp) to Gram per Cup (g/cup) using the exact conversion factor (1 pound per tablespoon = 7,257.47792 gram per cup). See the formula, worked examples, and conversion table.
Pounds per Tablespoon to Grams per Cup 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 30675.56539 / 4.226752838.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Tablespoon to Grams per Cup
Pound per Tablespoon and Gram per Cup 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 cup = pounds per tablespoon × 7257.47792
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per tablespoon equals 30675.5653931 base units, and 1 gram per cup equals 4.22675283773 base units, so dividing one by the other gives the direct pound per tablespoon-to-gram per cup factor of 7257.47792.
Simple example
1 lb/tbsp × 7257.47792 = 7,257.47792 g/cup
1 pound per tablespoon = 7,257.47792 grams per cup.
Real-world example
1,000 lb/tbsp × 7257.47792 = 7,257,477.92 g/cup
1,000 pounds per tablespoon = 7,257,477.92 grams per cup.
Conversion table
| Pound per Tablespoon (lb/tbsp) | Gram per Cup (g/cup) |
|---|---|
| 0.1 lb/tbsp | 725.747792 g/cup |
| 1 lb/tbsp | 7,257.47792 g/cup |
| 10 lb/tbsp | 72,574.7792 g/cup |
| 100 lb/tbsp | 725,747.792 g/cup |
| 1,000 lb/tbsp | 7,257,477.92 g/cup |
| 10,000 lb/tbsp | 72,574,779.2 g/cup |
Reverse conversion: Gram per Cup to Pound per Tablespoon
1 g/cup × 0.0001377889139 = 0.0001377889 lb/tbsp
1 gram per cup = 0.0001377889 pounds per tablespoon.
pounds per tablespoon = grams per cup × 0.000137788913866
For a page dedicated to this direction, see Gram per Cup to Pound per Tablespoon.
Understanding the Pound per Tablespoon (lb/tbsp)
Mass per volume density.
Understanding the Gram per Cup (g/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grams per cup are in 1 pound per tablespoon?
1 pound per tablespoon equals 7,257.47792 grams per cup, using the exact defined conversion factor rather than an estimate.
How do I convert pound per tablespoon to gram per cup?
Multiply the pound per tablespoon value by 7257.47792. The converter above does this instantly to whatever precision you set.
How do I convert gram per cup back to pound per tablespoon?
Use the reverse factor: 1 gram per cup equals 0.0001377889 pounds per tablespoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per tablespoon?
Pound per Tablespoon (lb/tbsp) is a unit of density.
What is a gram per cup?
Gram per Cup (g/cup) is a unit of density.
Is the pound per tablespoon to gram per cup conversion exact?
Yes. Both pound per tablespoon and gram per cup are defined by fixed standards rather than physical artifacts, so the factor of 7257.47792 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.