Mass per volume density.
Grains per Tablespoon to Carats per Fluid ounce Converter — gr/tbsp to ct/fl oz
Convert Grain per Tablespoon (gr/tbsp) to Carat per Fluid ounce (ct/fl oz) using the exact conversion factor (1 grain per tablespoon = 0.6479891 carat per fluid ounce). See the formula, worked examples, and conversion table.
Grains per Tablespoon to Carats per Fluid ounce 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 4.382223628 / 6.76280454.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Tablespoon to Carats per Fluid ounce
Grain per Tablespoon and Carat per Fluid ounce 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
carats per fluid ounce = grains per tablespoon × 0.6479891
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per tablespoon equals 4.38222362759 base units, and 1 carat per fluid ounce equals 6.76280454037 base units, so dividing one by the other gives the direct grain per tablespoon-to-carat per fluid ounce factor of 0.6479891.
Simple example
1 gr/tbsp × 0.6479891 = 0.6479891 ct/fl oz
1 grain per tablespoon = 0.6479891 carats per fluid ounce.
Real-world example
1,000 gr/tbsp × 0.6479891 = 647.9891 ct/fl oz
1,000 grains per tablespoon = 647.9891 carats per fluid ounce.
Conversion table
| Grain per Tablespoon (gr/tbsp) | Carat per Fluid ounce (ct/fl oz) |
|---|---|
| 0.1 gr/tbsp | 0.06479891 ct/fl oz |
| 1 gr/tbsp | 0.6479891 ct/fl oz |
| 10 gr/tbsp | 6.479891 ct/fl oz |
| 100 gr/tbsp | 64.79891 ct/fl oz |
| 1,000 gr/tbsp | 647.9891 ct/fl oz |
| 10,000 gr/tbsp | 6,479.891 ct/fl oz |
Reverse conversion: Carat per Fluid ounce to Grain per Tablespoon
0.6479891 ct/fl oz × 1.543235835 = 1 gr/tbsp
0.6479891 carats per fluid ounce = 1 grains per tablespoon.
grains per tablespoon = carats per fluid ounce × 1.54323583529
For a page dedicated to this direction, see Carat per Fluid ounce to Grain per Tablespoon.
Understanding the Grain per Tablespoon (gr/tbsp)
Mass per volume density.
Understanding the Carat per Fluid ounce (ct/fl oz)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many carats per fluid ounce are in 1 grain per tablespoon?
1 grain per tablespoon equals 0.6479891 carats per fluid ounce, using the exact defined conversion factor rather than an estimate.
How do I convert grain per tablespoon to carat per fluid ounce?
Multiply the grain per tablespoon value by 0.6479891. The converter above does this instantly to whatever precision you set.
How do I convert carat per fluid ounce back to grain per tablespoon?
Use the reverse factor: 1 carat per fluid ounce equals 1.543235835 grains per tablespoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per tablespoon?
Grain per Tablespoon (gr/tbsp) is a unit of density.
What is a carat per fluid ounce?
Carat per Fluid ounce (ct/fl oz) is a unit of density.
Is the grain per tablespoon to carat per fluid ounce conversion exact?
Yes. Both grain per tablespoon and carat per fluid ounce are defined by fixed standards rather than physical artifacts, so the factor of 0.6479891 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.