Mass per volume density.
Stones per Teaspoon to Hectograms per Cup Converter — st/tsp to hg/cup
Convert Stone per Teaspoon (st/tsp) to Hectogram per Cup (hg/cup) using the exact conversion factor (1 stone per teaspoon = 3,048.140726 hectogram per cup). See the formula, worked examples, and conversion table.
Stones per Teaspoon to Hectograms 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 / 422.6752838.
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 Hectograms per Cup
Stone per Teaspoon and Hectogram 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
hectograms per cup = stones per teaspoon × 3048.1407264
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 hectogram per cup equals 422.675283773 base units, so dividing one by the other gives the direct stone per teaspoon-to-hectogram per cup factor of 3048.1407264.
Simple example
1 st/tsp × 3048.140726 = 3,048.140726 hg/cup
1 stone per teaspoon = 3,048.140726 hectograms per cup.
Real-world example
1,000 st/tsp × 3048.140726 = 3,048,140.726 hg/cup
1,000 stones per teaspoon = 3,048,140.726 hectograms per cup.
Conversion table
| Stone per Teaspoon (st/tsp) | Hectogram per Cup (hg/cup) |
|---|---|
| 0.1 st/tsp | 304.8140726 hg/cup |
| 1 st/tsp | 3,048.140726 hg/cup |
| 10 st/tsp | 30,481.40726 hg/cup |
| 100 st/tsp | 304,814.0726 hg/cup |
| 1,000 st/tsp | 3,048,140.726 hg/cup |
| 10,000 st/tsp | 30,481,407.26 hg/cup |
Reverse conversion: Hectogram per Cup to Stone per Teaspoon
1 hg/cup × 0.0003280688425 = 0.0003280688 st/tsp
1 hectogram per cup = 0.0003280688 stones per teaspoon.
stones per teaspoon = hectograms per cup × 0.000328068842537
For a page dedicated to this direction, see Hectogram per Cup to Stone per Teaspoon.
Understanding the Stone per Teaspoon (st/tsp)
Mass per volume density.
Understanding the Hectogram per Cup (hg/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many hectograms per cup are in 1 stone per teaspoon?
1 stone per teaspoon equals 3,048.140726 hectograms per cup, using the exact defined conversion factor rather than an estimate.
How do I convert stone per teaspoon to hectogram per cup?
Multiply the stone per teaspoon value by 3048.140726. The converter above does this instantly to whatever precision you set.
How do I convert hectogram per cup back to stone per teaspoon?
Use the reverse factor: 1 hectogram per cup equals 0.0003280688 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 hectogram per cup?
Hectogram per Cup (hg/cup) is a unit of density.
Is the stone per teaspoon to hectogram per cup conversion exact?
Yes. Both stone per teaspoon and hectogram per cup are defined by fixed standards rather than physical artifacts, so the factor of 3048.140726 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.