How many scruples are in one stone?

One stone contains approximately 4,898 scruples. The stone weighs 6,350 grams (14 pounds), divided by 1.296 grams per scruple.

Were scruples and stones ever used together?

Yes, by 19th-century British physicians who weighed patients in stones and pounds and prescribed medications in scruples. The doctor's scale and the pharmacist's scale occupied the same medical ecosystem.

How do I convert scruples to stones?

Multiply scruples by 0.000204. For example, 100 scruples equals about 0.0204 stones. For quick estimation, divide scruples by 4,900 for approximate stones.

Scruples to Stones (s ap to st) Converter

1 s ap = 0.0002 st

1 Scruple equals 0.0002 Stones (1 s ap = 0.0002 st). Convert Scruples to Stones with formula, table, and examples.

One scruple equals approximately 0.000204 stones, meaning roughly 4,898 scruples make one stone of 14 pounds. The stone measures British body weight; the scruple measured apothecary drug doses. Their conversion bridges personal health measurement with pharmaceutical precision, two domains that are related by function (both concern the human body) but not by scale.

How to Convert Scruples to Stones

st = s ap ÷ 4,900

Divide the value in Scruples by 4,900

Take your value in Scruples
Divide by 4,900
Read the result in Stones

Common Scruples to Stones Conversions

Scruples (s ap)	Stones (st)	Status
10 s ap	0.00204082 st
24 s ap	0.00489796 st
100 s ap	0.02040816 st
288 s ap	0.05877551 st
500 s ap	0.10204082 st
1,000 s ap	0.20408163 st
5,000 s ap	1.02040816 st
10,000 s ap	2.04081633 st
50,000 s ap	10.20408163 st
100,000 s ap	20.40816327 st

Good to Know About Scruples to Stones Conversion

The scruple and stone both relate to the human body but from opposite perspectives. The stone measures the body itself; the scruple measures what goes into it. A Victorian physician navigating between these two units was performing a primitive form of weight-adjusted dosing, calculating how many scruples of medicine were appropriate for a patient measured in stones. Modern pharmacology formalizes this relationship with milligrams per kilogram.

Scruples to Stones: What You Need to Know

A physician in 19th-century Britain might have weighed a patient in stones and prescribed medicine in scruples, performing both measurements on the same patient within minutes. The stone told the doctor how much the patient weighed; the scruple told the pharmacist how much medicine to dispense. Understanding both scales was essential to weight-adjusted dosing.

What is a Scruple? s ap

An apothecary scruple equals 20 grains or 1/3 of a dram apothecary (1.2959782 grams). A historical pharmaceutical unit largely replaced by metric measurements.

Apothecaries historical pharmacy historical medicine

Learn more about Scruple →

What is a Stone? st

A British unit of mass equal to 14 pounds or approximately 6.35 kilograms. Commonly used in the UK and Ireland for body weight.

Imperial body weight (UK/Ireland) horse racing

Learn more about Stone →

Going the other way? Use our Stones to Scruples converter.

Scruples to Stones FAQ

One stone contains approximately 4,898 scruples. The stone weighs 6,350 grams (14 pounds), divided by 1.296 grams per scruple.
Yes, by 19th-century British physicians who weighed patients in stones and pounds and prescribed medications in scruples. The doctor's scale and the pharmacist's scale occupied the same medical ecosystem.
Multiply scruples by 0.000204. For example, 100 scruples equals about 0.0204 stones. For quick estimation, divide scruples by 4,900 for approximate stones.

Non-Frequently Asked Questions About Scruples to Stones

Questions nobody should ask - but someone did.

At 10 stone (140 pounds, about 63.5 kilograms), you contain approximately 48,980 scruples of human mass. A Victorian pharmacist would blanch at dispensing 48,980 scruples of anything, since most prescriptions called for 1 to 3 scruples. Your body, measured in pharmaceutical terms, is an extraordinarily large dose of person.
About 4,898 pills, each weighing one scruple (1.296 grams). Swallowed all at once, this would exceed every pharmaceutical safety guideline ever written and likely result in a very uncomfortable conversation with emergency services. The stone is not a therapeutic unit.
Some did, recognizing that a 14-stone patient needed more medication than an 8-stone patient. However, weight-adjusted dosing was not standardized until the 20th century. Many Victorian prescriptions were fixed doses regardless of patient size, which contributed to both under-dosing of large patients and over-dosing of small ones.