Mass per volume density.
Stones per Teaspoon to Drams per Cup Converter — st/tsp to dr/cup
Convert Stone per Teaspoon (st/tsp) to Dram per Cup (dr/cup) using the exact conversion factor (1 stone per teaspoon = 172,032 dram per cup). See the formula, worked examples, and conversion table.
Stones per Teaspoon to Drams 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 1.28837375e+6 / 7.489151707.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Stones per Teaspoon to Drams per Cup
Stone per Teaspoon and Dram 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
drams per cup = stones per teaspoon × 172032
This factor comes from each unit's defined relationship to the category's base unit: 1 stone per teaspoon equals 1288373.74651 base units, and 1 dram per cup equals 7.48915170731 base units, so dividing one by the other gives the direct stone per teaspoon-to-dram per cup factor of 172032.
Simple example
1 st/tsp × 172032 = 172,032 dr/cup
1 stone per teaspoon = 172,032 drams per cup.
Real-world example
1,000 st/tsp × 172032 = 172,032,000 dr/cup
1,000 stones per teaspoon = 172,032,000 drams per cup.
Conversion table
| Stone per Teaspoon (st/tsp) | Dram per Cup (dr/cup) |
|---|---|
| 0.1 st/tsp | 17,203.2 dr/cup |
| 1 st/tsp | 172,032 dr/cup |
| 10 st/tsp | 1,720,320 dr/cup |
| 100 st/tsp | 17,203,200 dr/cup |
| 1,000 st/tsp | 172,032,000 dr/cup |
| 10,000 st/tsp | 1,720,320,000 dr/cup |
Reverse conversion: Dram per Cup to Stone per Teaspoon
1 dr/cup × 0.000005812872024 = 0.0000058129 st/tsp
1 dram per cup = 0.0000058129 stones per teaspoon.
stones per teaspoon = drams per cup × 0.00000581287202381
For a page dedicated to this direction, see Dram per Cup to Stone per Teaspoon.
Understanding the Stone per Teaspoon (st/tsp)
Mass per volume density.
Understanding the Dram per Cup (dr/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many drams per cup are in 1 stone per teaspoon?
1 stone per teaspoon equals 172,032 drams per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per teaspoon to dram per cup?
Multiply the stone per teaspoon value by 172032. The converter above does this instantly to whatever precision you set.
How do I convert dram per cup back to stone per teaspoon?
Use the reverse factor: 1 dram per cup equals 0.0000058129 stones per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a stone per teaspoon?
Stone per Teaspoon (st/tsp) is a unit of density.
What is a dram per cup?
Dram per Cup (dr/cup) is a unit of density.
Is the stone per teaspoon to dram per cup conversion exact?
Yes. Both stone per teaspoon and dram per cup are defined by fixed standards rather than physical artifacts, so the factor of 172032 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.