Mass per volume density.
Ounces per Cup to Stones per Tablespoon Converter — oz/cup to st/tbsp
Convert Ounce per Cup (oz/cup) to Stone per Tablespoon (st/tbsp) using the exact conversion factor (1 ounce per cup = 0.0002790179 stone per tablespoon). See the formula, worked examples, and conversion table.
Ounces per Cup to Stones per Tablespoon 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 119.8264273 / 429457.9155.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Ounces per Cup to Stones per Tablespoon
Ounce per Cup and Stone per Tablespoon 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 tablespoon = ounces per cup × 0.000279017857143
This factor comes from each unit's defined relationship to the category's base unit: 1 ounce per cup equals 119.826427317 base units, and 1 stone per tablespoon equals 429457.915504 base units, so dividing one by the other gives the direct ounce per cup-to-stone per tablespoon factor of 0.000279017857143.
Simple example
1 oz/cup × 0.0002790178571 = 0.0002790179 st/tbsp
1 ounce per cup = 0.0002790179 stones per tablespoon.
Real-world example
1,000 oz/cup × 0.0002790178571 = 0.2790178571 st/tbsp
1,000 ounces per cup = 0.2790178571 stones per tablespoon.
Conversion table
| Ounce per Cup (oz/cup) | Stone per Tablespoon (st/tbsp) |
|---|---|
| 0.1 oz/cup | 0.0000279018 st/tbsp |
| 1 oz/cup | 0.0002790179 st/tbsp |
| 10 oz/cup | 0.0027901786 st/tbsp |
| 100 oz/cup | 0.0279017857 st/tbsp |
| 1,000 oz/cup | 0.2790178571 st/tbsp |
| 10,000 oz/cup | 2.790178571 st/tbsp |
Reverse conversion: Stone per Tablespoon to Ounce per Cup
0.0002790179 st/tbsp × 3584 = 1.000000154 oz/cup
0.0002790179 stones per tablespoon = 1.000000154 ounces per cup.
ounces per cup = stones per tablespoon × 3584
For a page dedicated to this direction, see Stone per Tablespoon to Ounce per Cup.
Understanding the Ounce per Cup (oz/cup)
Mass per volume density.
Understanding the Stone per Tablespoon (st/tbsp)
Mass per volume density.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many stones per tablespoon are in 1 ounce per cup?
1 ounce per cup equals 0.0002790179 stones per tablespoon, using the exact defined conversion factor rather than an estimate.
How do I convert ounce per cup to stone per tablespoon?
Multiply the ounce per cup value by 0.0002790178571. The converter above does this instantly to whatever precision you set.
How do I convert stone per tablespoon back to ounce per cup?
Use the reverse factor: 1 stone per tablespoon equals 3,584 ounces per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a ounce per cup?
Ounce per Cup (oz/cup) is a unit of density.
What is a stone per tablespoon?
Stone per Tablespoon (st/tbsp) is a unit of density.
Is the ounce per cup to stone per tablespoon conversion exact?
Yes. Both ounce per cup and stone per tablespoon are defined by fixed standards rather than physical artifacts, so the factor of 0.0002790178571 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.