Mass per volume density.
Ounces per Teaspoon to Stones per Cup Converter — oz/tsp to st/cup
Convert Ounce per Teaspoon (oz/tsp) to Stone per Cup (st/cup) using the exact conversion factor (1 ounce per teaspoon = 0.2142857143 stone per cup). See the formula, worked examples, and conversion table.
Ounces per Teaspoon to Stones 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 5751.668511 / 26841.11972.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Teaspoon to Stones per Cup
Ounce per Teaspoon and Stone 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
stones per cup = ounces per teaspoon × 0.214285714286
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per teaspoon equals 5751.66851121 base units, and 1 stone per cup equals 26841.119719 base units, so dividing one by the other gives the direct ounce per teaspoon-to-stone per cup factor of 0.214285714286.
Simple example
1 oz/tsp × 0.2142857143 = 0.2142857143 st/cup
1 ounce per teaspoon = 0.2142857143 stones per cup.
Real-world example
1,000 oz/tsp × 0.2142857143 = 214.2857143 st/cup
1,000 ounces per teaspoon = 214.2857143 stones per cup.
Conversion table
| Ounce per Teaspoon (oz/tsp) | Stone per Cup (st/cup) |
|---|---|
| 0.1 oz/tsp | 0.0214285714 st/cup |
| 1 oz/tsp | 0.2142857143 st/cup |
| 10 oz/tsp | 2.142857143 st/cup |
| 100 oz/tsp | 21.42857143 st/cup |
| 1,000 oz/tsp | 214.2857143 st/cup |
| 10,000 oz/tsp | 2,142.857143 st/cup |
Reverse conversion: Stone per Cup to Ounce per Teaspoon
0.2142857143 st/cup × 4.666666667 = 1 oz/tsp
0.2142857143 stones per cup = 1 ounces per teaspoon.
ounces per teaspoon = stones per cup × 4.66666666667
For a page dedicated to this direction, see Stone per Cup to Ounce per Teaspoon.
Understanding the Ounce per Teaspoon (oz/tsp)
Mass per volume density.
Understanding the Stone per Cup (st/cup)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per cup are in 1 ounce per teaspoon?
1 ounce per teaspoon equals 0.2142857143 stones per cup, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per teaspoon to stone per cup?
Multiply the ounce per teaspoon value by 0.2142857143. The converter above does this instantly to whatever precision you set.
How do I convert stone per cup back to ounce per teaspoon?
Use the reverse factor: 1 stone per cup equals 4.666666667 ounces per teaspoon. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per teaspoon?
Ounce per Teaspoon (oz/tsp) is a unit of density.
What is a stone per cup?
Stone per Cup (st/cup) is a unit of density.
Is the ounce per teaspoon to stone per cup conversion exact?
Yes. Both ounce per teaspoon and stone per cup are defined by fixed standards rather than physical artifacts, so the factor of 0.2142857143 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.