Mass per volume density.
Grams per Tablespoon to Grains per Cup Converter — g/tbsp to gr/cup
Convert Gram per Tablespoon (g/tbsp) to Grain per Cup (gr/cup) using the exact conversion factor (1 gram per tablespoon = 246.9177336 grain per cup). See the formula, worked examples, and conversion table.
Grams per Tablespoon to Grains 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 67.6280454 / 0.2738889767.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grams per Tablespoon to Grains per Cup
Gram per Tablespoon and Grain 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
grains per cup = grams per tablespoon × 246.917733647
This factor comes from each unit's defined relationship to the category's base unit: 1 gram per tablespoon equals 67.6280454037 base units, and 1 grain per cup equals 0.273888976724 base units, so dividing one by the other gives the direct gram per tablespoon-to-grain per cup factor of 246.917733647.
Simple example
1 g/tbsp × 246.9177336 = 246.9177336 gr/cup
1 gram per tablespoon = 246.9177336 grains per cup.
Real-world example
1,000 g/tbsp × 246.9177336 = 246,917.7336 gr/cup
1,000 grams per tablespoon = 246,917.7336 grains per cup.
Conversion table
| Gram per Tablespoon (g/tbsp) | Grain per Cup (gr/cup) |
|---|---|
| 0.1 g/tbsp | 24.69177336 gr/cup |
| 1 g/tbsp | 246.9177336 gr/cup |
| 10 g/tbsp | 2,469.177336 gr/cup |
| 100 g/tbsp | 24,691.77336 gr/cup |
| 1,000 g/tbsp | 246,917.7336 gr/cup |
| 10,000 g/tbsp | 2,469,177.336 gr/cup |
Reverse conversion: Grain per Cup to Gram per Tablespoon
246.9177336 gr/cup × 0.004049931875 = 0.9999999998 g/tbsp
246.9177336 grains per cup = 0.9999999998 grams per tablespoon.
grams per tablespoon = grains per cup × 0.004049931875
For a page dedicated to this direction, see Grain per Cup to Gram per Tablespoon.
Understanding the Gram per Tablespoon (g/tbsp)
Mass per volume density.
Understanding the Grain per Cup (gr/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many grains per cup are in 1 gram per tablespoon?
1 gram per tablespoon equals 246.9177336 grains per cup, using the exact defined conversion factor rather than an estimate.
How do I convert gram per tablespoon to grain per cup?
Multiply the gram per tablespoon value by 246.9177336. The converter above does this instantly to whatever precision you set.
How do I convert grain per cup back to gram per tablespoon?
Use the reverse factor: 1 grain per cup equals 0.0040499319 grams per tablespoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a gram per tablespoon?
Gram per Tablespoon (g/tbsp) is a unit of density.
What is a grain per cup?
Grain per Cup (gr/cup) is a unit of density.
Is the gram per tablespoon to grain per cup conversion exact?
Yes. Both gram per tablespoon and grain per cup are defined by fixed standards rather than physical artifacts, so the factor of 246.9177336 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.