Mass per volume density.
Grains per Cup to Micrograms per Teaspoon Converter — gr/cup to ug/tsp
Convert Grain per Cup (gr/cup) to Microgram per Teaspoon (ug/tsp) using the exact conversion factor (1 grain per cup = 1,349.977292 microgram per teaspoon). See the formula, worked examples, and conversion table.
Grains per Cup to Micrograms per Teaspoon 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 0.2738889767 / 0.0002028841362.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Grains per Cup to Micrograms per Teaspoon
Grain per Cup and Microgram per Teaspoon 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
micrograms per teaspoon = grains per cup × 1349.97729167
This factor comes from each unit's defined relationship to the category's base unit: 1 grain per cup equals 0.273888976724 base units, and 1 microgram per teaspoon equals 0.000202884136211 base units, so dividing one by the other gives the direct grain per cup-to-microgram per teaspoon factor of 1349.97729167.
Simple example
1 gr/cup × 1349.977292 = 1,349.977292 ug/tsp
1 grain per cup = 1,349.977292 micrograms per teaspoon.
Real-world example
1,000 gr/cup × 1349.977292 = 1,349,977.292 ug/tsp
1,000 grains per cup = 1,349,977.292 micrograms per teaspoon.
Conversion table
| Grain per Cup (gr/cup) | Microgram per Teaspoon (ug/tsp) |
|---|---|
| 0.1 gr/cup | 134.9977292 ug/tsp |
| 1 gr/cup | 1,349.977292 ug/tsp |
| 10 gr/cup | 13,499.77292 ug/tsp |
| 100 gr/cup | 134,997.7292 ug/tsp |
| 1,000 gr/cup | 1,349,977.292 ug/tsp |
| 10,000 gr/cup | 13,499,772.92 ug/tsp |
Reverse conversion: Microgram per Teaspoon to Grain per Cup
1 ug/tsp × 0.0007407532009 = 0.0007407532 gr/cup
1 microgram per teaspoon = 0.0007407532 grains per cup.
grains per cup = micrograms per teaspoon × 0.000740753200941
For a page dedicated to this direction, see Microgram per Teaspoon to Grain per Cup.
Understanding the Grain per Cup (gr/cup)
Mass per volume density.
Understanding the Microgram per Teaspoon (ug/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micrograms per teaspoon are in 1 grain per cup?
1 grain per cup equals 1,349.977292 micrograms per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert grain per cup to microgram per teaspoon?
Multiply the grain per cup value by 1349.977292. The converter above does this instantly to whatever precision you set.
How do I convert microgram per teaspoon back to grain per cup?
Use the reverse factor: 1 microgram per teaspoon equals 0.0007407532 grains per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a grain per cup?
Grain per Cup (gr/cup) is a unit of density.
What is a microgram per teaspoon?
Microgram per Teaspoon (ug/tsp) is a unit of density.
Is the grain per cup to microgram per teaspoon conversion exact?
Yes. Both grain per cup and microgram per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 1349.977292 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.