Convert Pound (troy/apothecary) to Stone (US)
Convert pounds (troy/apothecary) to stones (us) instantly. 1 pound (troy/apothecary) = 0.0658285714 stone (us) — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Stone (US) to Pound (troy/apothecary) converter for the reverse conversion.
Units explained
Pound (troy/apothecary)
The troy (apothecary) pound equals 12 troy ounces, about 373.24 grams.
Named for Troyes, France, a major medieval trade-fair town.
Historical pricing of precious metals; now largely superseded by the troy ounce.
Adopted as the English coinage standard under Henry VIII in 1528.
Stone (US)
A less common US definition of the stone, about 5.67 kilograms.
A variant stone weight used in some historical US trade.
Rare; appears mainly in historical or specialized contexts.
Derived from older English stone weights that varied by commodity.
Pound (troy/apothecary) to Stone (US) conversion formula
The relationship between pounds (troy/apothecary) and stones (us):
To convert pounds (troy/apothecary) to stones (us), multiply the value in pounds (troy/apothecary) by 0.0658285714. To reverse, multiply stones (us) by 15.1909722222.
How to use this converter
Type a value into the calculator. The result in stones (us) updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the Stone (US) to Pound (troy/apothecary) converter for the reverse direction.
Step-by-step: convert pounds (troy/apothecary) to stones (us)
- Write down the value in pounds (troy/apothecary) (lb t).
- Multiply that value by the factor 0.0658285714.
- The product is the equivalent value in stones (us) (st).
- To reverse, multiply the stone (us) value by 15.1909722222.
Worked examples
Example 1 — Convert 1 lb t to st:
1 × 0.0658285714 = 0.0658285714 st
Example 2 — Convert 100 lb t to st:
100 × 0.0658285714 = 6.5828571429 st
Real-world example — Adult height conversion
A 1.8-pound (troy/apothecary)-tall person measures a value in stones (us) that converts the height to the unit favoured by American forms, schools, or driver's licences. This is daily routine for anyone living between metric and imperial systems.
1.8 lb t × 0.0658285714 = 0.1184914286 st
Real-world example — Fabric purchase length
Two pounds (troy/apothecary) of fabric equals a value in stones (us) essential for tailors and textile buyers sourcing material from international suppliers that quote in different units.
2 lb t × 0.0658285714 = 0.1316571429 st
Real-world example — Maritime depth conversion
A 10-pound (troy/apothecary) sounding depth converts cleanly into stones (us). Recreational divers and sailors translate between the two units whenever they read legacy charts against modern depth-sounder displays.
10 lb t × 0.0658285714 = 0.6582857143 st
Pound (troy/apothecary) to Stone (US) conversion table
Standard reference values for converting pounds (troy/apothecary) to stones (us):
| Pound (troy/apothecary) [lb t] | Stone (US) [st] |
|---|---|
| 0.01 | 0.0006582857 |
| 0.1 | 0.0065828571 |
| 1 | 0.0658285714 |
| 2 | 0.1316571429 |
| 3 | 0.1974857143 |
| 4 | 0.2633142857 |
| 5 | 0.3291428571 |
| 10 | 0.6582857143 |
| 20 | 1.3165714286 |
| 30 | 1.9748571429 |
| 40 | 2.6331428571 |
| 50 | 3.2914285714 |
| 100 | 6.5828571429 |
| 500 | 32.9142857143 |
| 1000 | 65.8285714286 |
Frequently asked questions
How many stones (us) is 1 pound (troy/apothecary)?
How do I convert pounds (troy/apothecary) to stones (us)?
How do I convert stones (us) back to pounds (troy/apothecary)?
How many stones (us) is 100 pounds (troy/apothecary)?
Popular weight unit conversions
Convert Pound (troy/apothecary) to other weight units
Show all Pound (troy/apothecary) conversions
Metric / SI (18 units)
Avoirdupois (15 units)
Troy & Apothecary (9 units)
Indian / South Asian (6 units)
Scientific / Atomic (9 units)
Astronomical (4 units)
Biblical / Ancient (14 units)
Sources & references
Conversion factor (1 lb t = 0.0658285714 st) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.