Mass per volume density.
Hectograms per Cup to Stones per Teaspoon Converter — hg/cup to st/tsp
Convert Hectogram per Cup (hg/cup) to Stone per Teaspoon (st/tsp) using the exact conversion factor (1 hectogram per cup = 0.0003280688 stone per teaspoon). See the formula, worked examples, and conversion table.
Hectograms per Cup to Stones 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 422.6752838 / 1.28837375e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectograms per Cup to Stones per Teaspoon
Hectogram per Cup and Stone 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
stones per teaspoon = hectograms per cup × 0.000328068842537
This factor comes from each unit's defined relationship to the category's base unit: 1 hectogram per cup equals 422.675283773 base units, and 1 stone per teaspoon equals 1288373.74651 base units, so dividing one by the other gives the direct hectogram per cup-to-stone per teaspoon factor of 0.000328068842537.
Simple example
1 hg/cup × 0.0003280688425 = 0.0003280688 st/tsp
1 hectogram per cup = 0.0003280688 stones per teaspoon.
Real-world example
1,000 hg/cup × 0.0003280688425 = 0.3280688425 st/tsp
1,000 hectograms per cup = 0.3280688425 stones per teaspoon.
Conversion table
| Hectogram per Cup (hg/cup) | Stone per Teaspoon (st/tsp) |
|---|---|
| 0.1 hg/cup | 0.0000328069 st/tsp |
| 1 hg/cup | 0.0003280688 st/tsp |
| 10 hg/cup | 0.0032806884 st/tsp |
| 100 hg/cup | 0.0328068843 st/tsp |
| 1,000 hg/cup | 0.3280688425 st/tsp |
| 10,000 hg/cup | 3.280688425 st/tsp |
Reverse conversion: Stone per Teaspoon to Hectogram per Cup
0.0003280688 st/tsp × 3048.140726 = 0.9999998703 hg/cup
0.0003280688 stones per teaspoon = 0.9999998703 hectograms per cup.
hectograms per cup = stones per teaspoon × 3048.1407264
For a page dedicated to this direction, see Stone per Teaspoon to Hectogram per Cup.
Understanding the Hectogram per Cup (hg/cup)
Mass per volume density.
Understanding the Stone per Teaspoon (st/tsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per teaspoon are in 1 hectogram per cup?
1 hectogram per cup equals 0.0003280688 stones per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert hectogram per cup to stone per teaspoon?
Multiply the hectogram per cup value by 0.0003280688425. The converter above does this instantly to whatever precision you set.
How do I convert stone per teaspoon back to hectogram per cup?
Use the reverse factor: 1 stone per teaspoon equals 3,048.140726 hectograms per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectogram per cup?
Hectogram per Cup (hg/cup) is a unit of density.
What is a stone per teaspoon?
Stone per Teaspoon (st/tsp) is a unit of density.
Is the hectogram per cup to stone per teaspoon conversion exact?
Yes. Both hectogram per cup and stone per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 0.0003280688425 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.