Mass per volume density.
Pounds per Cup to Stones per Teaspoon Converter — lb/cup to st/tsp
Convert Pound per Cup (lb/cup) to Stone per Teaspoon (st/tsp) using the exact conversion factor (1 pound per cup = 0.0014880952 stone per teaspoon). See the formula, worked examples, and conversion table.
Pounds 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 1917.222837 / 1.28837375e+6.
Density uses kilograms per cubic meter as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Pounds per Cup to Stones per Teaspoon
Pound 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 = pounds per cup × 0.0014880952381
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per cup equals 1917.22283707 base units, and 1 stone per teaspoon equals 1288373.74651 base units, so dividing one by the other gives the direct pound per cup-to-stone per teaspoon factor of 0.0014880952381.
Simple example
1 lb/cup × 0.001488095238 = 0.0014880952 st/tsp
1 pound per cup = 0.0014880952 stones per teaspoon.
Real-world example
1,000 lb/cup × 0.001488095238 = 1.488095238 st/tsp
1,000 pounds per cup = 1.488095238 stones per teaspoon.
Conversion table
| Pound per Cup (lb/cup) | Stone per Teaspoon (st/tsp) |
|---|---|
| 0.1 lb/cup | 0.0001488095 st/tsp |
| 1 lb/cup | 0.0014880952 st/tsp |
| 10 lb/cup | 0.0148809524 st/tsp |
| 100 lb/cup | 0.1488095238 st/tsp |
| 1,000 lb/cup | 1.488095238 st/tsp |
| 10,000 lb/cup | 14.88095238 st/tsp |
Reverse conversion: Stone per Teaspoon to Pound per Cup
0.0014880952 st/tsp × 672 = 0.9999999744 lb/cup
0.0014880952 stones per teaspoon = 0.9999999744 pounds per cup.
pounds per cup = stones per teaspoon × 672
For a page dedicated to this direction, see Stone per Teaspoon to Pound per Cup.
Understanding the Pound per Cup (lb/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 pound per cup?
1 pound per cup equals 0.0014880952 stones per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per cup to stone per teaspoon?
Multiply the pound per cup value by 0.001488095238. The converter above does this instantly to whatever precision you set.
How do I convert stone per teaspoon back to pound per cup?
Use the reverse factor: 1 stone per teaspoon equals 672 pounds per cup. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per cup?
Pound per Cup (lb/cup) is a unit of density.
What is a stone per teaspoon?
Stone per Teaspoon (st/tsp) is a unit of density.
Is the pound per cup to stone per teaspoon conversion exact?
Yes. Both pound per cup and stone per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 0.001488095238 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.