Mass per volume density.
Pounds per Quart to Stones per Teaspoon Converter — lb/qt to st/tsp
Convert Pound per Quart (lb/qt) to Stone per Teaspoon (st/tsp) using the exact conversion factor (1 pound per quart = 0.0003720238 stone per teaspoon). See the formula, worked examples, and conversion table.
Pounds per Quart 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 479.3057093 / 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 Quart to Stones per Teaspoon
Pound per Quart 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 quart × 0.000372023809524
This factor comes from each unit's defined relationship to the category's base unit: 1 pound per quart equals 479.305709268 base units, and 1 stone per teaspoon equals 1288373.74651 base units, so dividing one by the other gives the direct pound per quart-to-stone per teaspoon factor of 0.000372023809524.
Simple example
1 lb/qt × 0.0003720238095 = 0.0003720238 st/tsp
1 pound per quart = 0.0003720238 stones per teaspoon.
Real-world example
1,000 lb/qt × 0.0003720238095 = 0.3720238095 st/tsp
1,000 pounds per quart = 0.3720238095 stones per teaspoon.
Conversion table
| Pound per Quart (lb/qt) | Stone per Teaspoon (st/tsp) |
|---|---|
| 0.1 lb/qt | 0.0000372024 st/tsp |
| 1 lb/qt | 0.0003720238 st/tsp |
| 10 lb/qt | 0.0037202381 st/tsp |
| 100 lb/qt | 0.037202381 st/tsp |
| 1,000 lb/qt | 0.3720238095 st/tsp |
| 10,000 lb/qt | 3.720238095 st/tsp |
Reverse conversion: Stone per Teaspoon to Pound per Quart
0.0003720238 st/tsp × 2688 = 0.9999999744 lb/qt
0.0003720238 stones per teaspoon = 0.9999999744 pounds per quart.
pounds per quart = stones per teaspoon × 2688
For a page dedicated to this direction, see Stone per Teaspoon to Pound per Quart.
Understanding the Pound per Quart (lb/qt)
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 quart?
1 pound per quart equals 0.0003720238 stones per teaspoon, using the exact defined conversion factor rather than an estimate.
How do I convert pound per quart to stone per teaspoon?
Multiply the pound per quart value by 0.0003720238095. The converter above does this instantly to whatever precision you set.
How do I convert stone per teaspoon back to pound per quart?
Use the reverse factor: 1 stone per teaspoon equals 2,688 pounds per quart. You can also use the swap control in the converter above to flip the direction instantly.
What is a pound per quart?
Pound per Quart (lb/qt) 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 quart to stone per teaspoon conversion exact?
Yes. Both pound per quart and stone per teaspoon are defined by fixed standards rather than physical artifacts, so the factor of 0.0003720238095 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.