Stone (st) - Unit Information & Conversion
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What is a Stone?
The stone is a unit of mass in the British Imperial system equal to exactly 14 avoirdupois pounds (6.35029318 kilograms), used primarily in the United Kingdom and Ireland for measuring human body weight. Unlike most Imperial units that have been replaced by metric equivalents, the stone remains deeply embedded in British and Irish culture—doctors, scales, and everyday conversation still reference body weight in stones and pounds rather than kilograms. The unit originated from the medieval practice of using standardized stones as trade weights, with different commodities historically having different stone values (wool stone = 14 lb, butcher stone = 8 lb, glass stone = 5 lb) until the 14-pound stone standardized for general use. While the UK officially adopted the metric system in 1965, the stone persists in weighing humans, with bathroom scales displaying both stones/pounds and kilograms, and weight loss programs, medical records, and fitness apps in the UK routinely using stones as the default measurement.
History of the Stone
The word "stone" as a unit of weight derives from the ancient practice of using actual stones as counterweights on balance scales, with communities selecting standardized reference stones kept in marketplaces for trade verification. In medieval England (1000-1500 CE), different stone weights existed for different commodities: the wool stone (14 lb, established by Edward III in 1340), the butcher's stone (8 lb for meat), the glass stone (5 lb), and various regional variations. The Weights and Measures Act 1824 attempted to standardize British units, formally defining the stone as 14 avoirdupois pounds for most purposes, though some commodity-specific stones persisted into the 20th century. The stone became the dominant unit for human body weight in Victorian Britain (1837-1901), replacing earlier vague descriptions ("hefty," "slight") with numerical precision. The 1965 Weights and Measures Act officially adopted the metric system in the UK, making kilograms the legal standard for trade, but exempted personal weighing scales, allowing the stone to continue in everyday use. In Ireland, the stone similarly persists despite official metrication in 2005. Today, while younger generations increasingly use kilograms, the stone remains culturally entrenched—British media reports celebrity weight in stones, the NHS records patient weight in stones/pounds, and bathroom scales default to Imperial measurements, making the stone one of the most resilient pre-metric units in modern Britain.
Quick Answer
1 stone = 14 pounds = 6.35029318 kilograms (EXACT)
The stone is the British and Irish unit for measuring human body weight. When someone in the UK says "I weigh 11 stone," they mean 11 × 14 = 154 pounds (70 kg). It's almost always used with additional pounds: "11 stone 7" = 11 stone + 7 pounds = 161 pounds (73 kg).
Why it matters: If you're traveling to the UK or Ireland, understanding stones prevents confusion. A British bathroom scale reads "11 st 3 lb" (157 lb / 71 kg), not "71 kg." Medical forms, weight loss programs, and fitness apps in these countries default to stones.
Cultural note: The stone is one of the last Imperial units in everyday British use. While Brits buy milk in litres and measure distance in kilometres (sort of—road signs still use miles!), they stubbornly weigh themselves in stones.
Quick Comparison Table
| Weight | Stones | Pounds | Kilograms | Context |
|---|---|---|---|---|
| Newborn baby | 0.5-0.6 st | 7-8 lb | 3.2-3.6 kg | Average birth weight |
| 5-year-old child | 2.5 st | 35 lb | 16 kg | Typical child weight |
| Average UK woman | 11 st | 154 lb | 70 kg | NHS data (2023) |
| Average UK man | 13.5 st | 189 lb | 86 kg | NHS data (2023) |
| Heavyweight boxer limit | 14 st 4 lb | 200 lb | 90.7 kg | Boxing weight class |
| NHS obesity threshold (5'9" man) | 13 st | 182 lb | 83 kg | BMI ≥30 |
| Jockey (racing weight) | 7.5-8.5 st | 105-119 lb | 48-54 kg | Horse racing limits |
Definition
1 stone = 14 avoirdupois pounds (lb) = 6.35029318 kilograms (kg) EXACT
The stone (symbol: st) is a unit of mass in the Imperial system, legally defined in terms of pounds, which are themselves defined in terms of kilograms. The exact conversion is:
1 pound = 0.45359237 kilograms (international definition, 1959)
1 stone = 14 × 0.45359237 kg = 6.35029318 kg
Stone and Pounds Notation
The stone is almost never used alone for body weight. Instead, it's combined with additional pounds:
Format: "X stone Y pounds" or "X st Y lb"
Examples:
- 10 st 0 lb = 10 stone exactly = 140 lb = 63.5 kg
- 10 st 7 lb = 10 stone + 7 pounds = 147 lb = 66.7 kg
- 12 st 3 lb = 12 stone + 3 pounds = 171 lb = 77.6 kg
Why this format? It provides precision without unwieldy decimal places. Saying "10.5 stone" is rare—people say "10 stone 7" instead (10 stone + 7 pounds = 10.5 stone).
Stone vs. Kilogram vs. Pound
Three systems for measuring body weight:
| System | Unit | Used In | Precision |
|---|---|---|---|
| Imperial (UK) | Stone + Pounds | UK, Ireland | "11 st 7 lb" (161 lb) |
| Imperial (US) | Pounds only | United States, Canada | "161 lb" |
| Metric | Kilograms | Most of the world | "73 kg" |
Cultural difference:
- Americans say "I weigh 161 pounds"
- British say "I weigh 11 stone 7" (rarely "161 pounds")
- Europeans say "I weigh 73 kilograms"
Why 14 Pounds?
The number 14 has no scientific basis—it's purely historical. Medieval England used base-12 counting (duodecimal) for some systems:
- 12 inches = 1 foot
- 12 pence = 1 shilling (pre-1971)
- But 14 pounds = 1 stone (not 12!)
Theory: The 14-pound wool stone emerged from trade practices. A "sack of wool" weighed 364 pounds = 26 stones (26 × 14 = 364), a convenient round number for taxation and commerce.
History
Ancient and Medieval Origins (Pre-1300)
The concept of standardized stones: Before precise metallic weights, communities used stones as trade counterweights. A merchant would keep a reference stone in the marketplace, verified by local authorities, against which goods were weighed.
Advantages:
- Durability: Stones don't corrode or wear like metal
- Availability: Every village had stones
- Tamper-resistance: Hard to secretly shave weight off a stone
Problem: Every region had different stones! The "stone of wool" in Yorkshire differed from the "stone of wool" in Kent.
Medieval Standardization Attempts (1300-1824)
Edward III's wool stone (1340): King Edward III standardized the wool stone at 14 pounds as part of regulating the lucrative wool trade (England's economic backbone in the Middle Ages). The "sack of wool" was defined as 364 pounds = 26 stones.
Commodity-specific stones: Different goods had different stone weights:
| Commodity | Stone Weight | Reasoning |
|---|---|---|
| Wool | 14 lb (6.35 kg) | Trade standard |
| Meat | 8 lb (3.63 kg) | Butcher's stone |
| Glass | 5 lb (2.27 kg) | Fragile goods |
| Cheese | 16 lb (7.26 kg) | Agricultural products |
| Iron | Variable (8-15 lb) | Regional differences |
Why different weights? Practical reasons:
- Heavy commodities (iron, lead): Smaller stone weight made counting easier
- Light, valuable goods (wool, spices): Larger stone weight reduced fractions
- Tradition: Each guild jealously guarded its customary weights
The Weights and Measures Act 1824
The problem: By 1800, Britain had dozens of incompatible stone definitions, creating chaos in trade and taxation.
The solution: The 1824 Act standardized British weights and measures:
- 14 pounds = 1 stone (for general use, not tied to specific commodities)
- Stone officially defined in relation to the pound
- Commodity-specific stones discouraged (but not banned)
Imperial standardization: The Act also defined:
- 1 pound = 7,000 grains
- 16 ounces = 1 pound
- 14 pounds = 1 stone
- 8 stone = 1 hundredweight (112 pounds)
- 20 hundredweight = 1 ton (2,240 pounds)
Body weight adoption: The Victorian era (1837-1901) saw the stone become the standard for human weighing. Bathroom scales, medical records, and public health data used stones and pounds.
Metrication and Persistence (1965-Present)
The Weights and Measures Act 1965: The UK officially adopted the metric system, making kilograms the legal unit for trade. However, the Act exempted personal weighing—bathroom scales could continue showing stones.
Why the exemption?
- Cultural resistance: Brits refused to abandon stones for body weight
- Economic lobbying: Scale manufacturers didn't want to retool
- Medical inertia: NHS records already used stones; conversion would be costly
The result: 60+ years later, the stone persists:
- Bathroom scales: Default to stones in the UK (even modern digital ones)
- NHS medical records: Still record patient weight in stones/pounds
- Weight loss programs: Slimming World, Weight Watchers UK use stones
- Media: British newspapers report celebrity weight in stones
- Sports: Boxing, horse racing, rowing use stones for weight classes
Ireland's experience: Ireland officially adopted metric units in 2005, but the stone remains common for body weight, especially among older generations.
Generational divide:
- Older Brits (60+): Think exclusively in stones
- Middle-aged (30-60): Bilingual (stones and kilograms)
- Younger (<30): Increasingly use kilograms, but still understand stones
Cultural Tenacity
The stone is the most persistent Imperial unit in British daily life, outlasting:
- Fahrenheit: Replaced by Celsius (weather, ovens)
- Inches/feet for height: Partially replaced by metres (though feet still common)
- Pints: Milk sold in litres (though beer still sold in pints!)
- Miles: Road signs still use miles (the UK never fully switched)
Why the stone survives:
- Emotional connection: Body weight is personal; changing units feels invasive
- Convenient range: For adults, weight is 8-20 stones (easy to remember vs. 50-127 kg)
- Medical exemption: Doctors use stones, so patients use stones
- Social reinforcement: Everyone around you uses stones, so you do too
Real-World Examples
1. Human Body Weight
Average weights (UK adults, NHS 2023):
Women:
- Age 20-29: 10.8 st (151 lb, 68.5 kg)
- Age 30-39: 11.2 st (157 lb, 71.2 kg)
- Age 40-49: 11.5 st (161 lb, 73.0 kg)
- Age 50-59: 11.7 st (164 lb, 74.4 kg)
Men:
- Age 20-29: 12.8 st (179 lb, 81.2 kg)
- Age 30-39: 13.5 st (189 lb, 85.7 kg)
- Age 40-49: 13.9 st (195 lb, 88.5 kg)
- Age 50-59: 14.1 st (197 lb, 89.4 kg)
Weight classifications (5'9" / 175 cm man):
- Underweight: <9 st (126 lb, 57 kg) — BMI <18.5
- Healthy: 9-12 st (126-168 lb, 57-76 kg) — BMI 18.5-24.9
- Overweight: 12-13 st (168-182 lb, 76-83 kg) — BMI 25-29.9
- Obese: >13 st (182 lb, 83 kg) — BMI ≥30
2. Celebrity Weights (British Media Reporting)
British tabloids report celebrity weight in stones:
Male celebrities:
- Tom Cruise: 10 st (140 lb, 64 kg) — "Hollywood lightweight"
- Daniel Craig (James Bond): 11 st 6 lb (160 lb, 73 kg) — "Lean and muscular"
- Dwayne "The Rock" Johnson: 18 st (252 lb, 114 kg) — "Massive frame"
Female celebrities:
- Adele (at peak weight): 14 st (196 lb, 89 kg) — "Body positivity icon"
- Kate Middleton: 8 st 7 lb (119 lb, 54 kg) — "Slender royal figure"
- Lizzo: 15 st (210 lb, 95 kg) — "Confident at any size"
Tabloid obsession: UK tabloids fixate on celebrity weight changes: "She's lost 3 stone!" (42 lb, 19 kg) or "He's gained 2 stone!" (28 lb, 13 kg).
3. Weight Loss Programs
Slimming World (UK):
- Members weigh in weekly
- Target: Lose 1-2 lb per week (sustainable rate)
- Milestones: "Half-stone award" (7 lb), "Stone award" (14 lb), "3 stone club" (42 lb)
Example journey:
- Starting weight: 15 st 8 lb (218 lb, 99 kg)
- Goal weight: 11 st (154 lb, 70 kg)
- Total loss needed: 4 st 8 lb (64 lb, 29 kg)
- Timeline: 8-16 months at 1-2 lb/week
NHS weight loss plan: Recommends losing 1 stone (14 lb, 6.35 kg) as an initial goal. "Lose a stone in 12 weeks" is a common target.
4. Sports and Weight Classes
Boxing (British weights):
- Flyweight: <8 st (112 lb, 51 kg)
- Lightweight: <9 st 9 lb (135 lb, 61 kg)
- Welterweight: <10 st 7 lb (147 lb, 67 kg)
- Middleweight: <11 st 6 lb (160 lb, 73 kg)
- Heavyweight: >14 st 4 lb (200 lb, 91 kg)
Horse racing (jockeys):
- Flat racing: 7 st 12 lb - 8 st 10 lb (110-122 lb, 50-55 kg)
- Jump racing: 9 st - 10 st (126-140 lb, 57-64 kg)
- Apprentice allowances: "claiming 7 lb" reduces required weight
Rowing (coxswains):
- Minimum weight: 8 st 6 lb (118 lb, 55 kg) for men's crews
- Minimum weight: 7 st 5 lb (103 lb, 50 kg) for women's crews
5. NHS Medical Context
Maternity care:
- Pre-pregnancy BMI: Calculated from stones/pounds
- Pregnancy weight gain target: 1-2 stone (14-28 lb, 6-13 kg) for healthy-weight women
- Post-partum: "Lost the baby weight" = returning to pre-pregnancy stone
Bariatric surgery criteria:
- BMI ≥40 (e.g., 18 st at 5'6" / 252 lb at 168 cm)
- BMI ≥35 with health conditions
- Expected loss: 5-10 stone (70-140 lb, 32-64 kg) post-surgery
GP records: British doctors still record weight as "st/lb" in patient files, though modern systems dual-display kilograms.
6. Children's Growth
UK child growth charts: NHS uses centile charts showing weight in kilograms, but parents often convert to stones for familiarity.
Milestones:
- 2 years old: 1 st 12 lb - 2 st (26-28 lb, 12-13 kg)
- 5 years old: 2 st 8 lb - 3 st (36-42 lb, 16-19 kg)
- 10 years old: 4 st 8 lb - 5 st 7 lb (63-77 lb, 29-35 kg)
- 15 years old: 8 st - 10 st (112-140 lb, 51-64 kg) — varies widely
School concerns: Letters home about childhood obesity reference BMI centiles, but parents mentally convert to stones: "Is 7 stone too heavy for a 10-year-old?"
7. Historical Comparisons
Victorian weights (1880s):
- Average man: 10 st 7 lb (147 lb, 67 kg) — 3 stone lighter than today
- Average woman: 9 st (126 lb, 57 kg) — 2 stone lighter
Causes of increase:
- Better nutrition (no malnutrition)
- Sedentary lifestyles (less manual labor)
- Processed foods (higher calorie density)
Medieval weights (estimated):
- Knight in armor: 10-11 st (140-154 lb, 64-70 kg) — lean and muscular
- Peasant farmer: 8-9 st (112-126 lb, 51-57 kg) — smaller due to poor diet
Common Uses
1. Body Weight Measurement
The stone is the unit for body weight in the UK and Ireland.
Bathroom scales:
- Display: "11 st 7 lb" (digital) or analog dial with stone markings
- Dual units: Many scales toggle between st/lb and kg
- Default: Stones for UK-sold scales, even from international brands
Weighing yourself:
- British: "I'm 12 stone 3"
- American: "I'm 171 pounds"
- European: "I'm 78 kilograms"
Weight goals:
- "I want to lose a stone" = 14-pound goal
- "I'm aiming for 10 stone" = target weight
- "I've gained half a stone" = 7-pound increase
2. Medical and Healthcare
NHS patient records: British hospitals and GPs record weight in stones/pounds (with kg conversion).
Medical forms:
- Pre-op questionnaires: "Weight: __ st __ lb"
- Prescription dosing: Sometimes based on weight (converted to kg for calculations)
- Anesthesia planning: Weight in stones converted to kg for drug dosages
Maternity care:
- Booking appointment: "What was your pre-pregnancy weight?" (stones)
- Pregnancy weight tracking: "You've gained 2 stone, which is healthy"
- Post-natal: "Most women lose 1-2 stone in the first weeks"
Mental health context: Eating disorder treatment tracks weight changes in stones (e.g., anorexia recovery: "gained 1 stone to 7 stone 10").
3. Weight Loss and Fitness
Slimming clubs:
- Slimming World, Weight Watchers UK: Weigh-ins in stones
- Awards: "Half-stone hero," "Stone club," "3-stone milestone"
- Targets: "Lose 10% of body weight" (e.g., 1.5 stone from 15 stone start)
Fitness apps (UK versions):
- MyFitnessPal UK: Input weight in stones
- Fitbit/Garmin: UK users set goals in stones
- Weight tracking graphs: Y-axis shows stones, not kg
Personal trainers: British trainers discuss client progress in stones: "You've dropped from 14 stone to 12 stone 8—fantastic!"
4. Sports Weight Classes
Boxing: British boxing traditionally used stones for weight classes (now officially kilograms, but stones still common in commentary).
Horse racing:
- Jockey weights: Includes jockey + saddle + lead weights to meet required "riding weight"
- Handicapping: Horses carry different weights (in stones) to equalize competition
- Penalties: "Carrying 9 stone 7" vs. "Carrying 10 stone" affects race outcomes
Rowing: Lightweight rowers must weigh under certain stone limits (now metric, but historically stones).
5. Everyday Conversation
The stone pervades British informal speech:
Common phrases:
- "I'm 11 stone, give or take" = approximate weight
- "She must be 10 stone soaking wet" = very light
- "He's put on a stone since Christmas" = seasonal weight gain
- "I haven't been 9 stone since I was 15!" = nostalgic reference
Social etiquette:
- It's impolite to ask someone's weight directly, but acceptable to discuss your own
- Women might say "I'm trying to get back to 9 stone" (goal weight)
6. Media and Entertainment
British TV shows:
- Reality TV: "Love Island" contestants' weights discussed in tabloids (stones)
- Medical shows: "Embarrassing Bodies" references patient weight in stones
- Game shows: "The Biggest Loser UK" tracked loss in stones
Newspapers and magazines:
- Celebrity weight speculation: "Has she lost 2 stone?"
- Health articles: "How to lose half a stone by summer"
- Success stories: "I lost 8 stone and transformed my life!"
7. Historical and Cultural References
Literature: Victorian novels reference weight in stones:
- Dickens, Austen rarely mention specific weights (impolite)
- 20th-century literature: "She was a strapping girl of 12 stone"
British humor: Comedians joke about weight in stones:
- "I'm not overweight, I'm just undertall for my 14 stone!"
Generational markers:
- Older Brits: "When I got married, I was 8 stone"
- Modern comparison: "That's only 112 pounds—too thin by today's standards!"
Conversion Guide
Basic Conversions
Stone to Pounds:
1 stone = 14 pounds (EXACT)
Stone to Kilograms:
1 stone = 6.35029318 kilograms (EXACT)
Stone to Grams:
1 stone = 6,350.29318 grams
Pounds to Stone:
1 pound = 0.071428571 stone (1/14)
Kilograms to Stone:
1 kilogram = 0.157473 stone
Conversion Tables
Stones → Pounds → Kilograms
| Stone | Pounds | Kilograms |
|---|---|---|
| 1 st | 14 lb | 6.35 kg |
| 5 st | 70 lb | 31.75 kg |
| 7 st | 98 lb | 44.45 kg |
| 8 st | 112 lb | 50.80 kg |
| 9 st | 126 lb | 57.15 kg |
| 10 st | 140 lb | 63.50 kg |
| 11 st | 154 lb | 69.85 kg |
| 12 st | 168 lb | 76.20 kg |
| 13 st | 182 lb | 82.55 kg |
| 14 st | 196 lb | 88.90 kg |
| 15 st | 210 lb | 95.25 kg |
| 20 st | 280 lb | 127.01 kg |
Kilograms → Stone (Common Body Weights)
| Kilograms | Stone + Pounds | Context |
|---|---|---|
| 50 kg | 7 st 12 lb | Light adult/teen |
| 60 kg | 9 st 6 lb | Petite woman |
| 70 kg | 11 st 0 lb | Average woman |
| 80 kg | 12 st 8 lb | Average man |
| 90 kg | 14 st 2 lb | Heavier man |
| 100 kg | 15 st 10 lb | Obese threshold (5'9") |
Stone + Pounds → Pounds Total
| Stone + Pounds | Total Pounds | Kilograms |
|---|---|---|
| 10 st 0 lb | 140 lb | 63.50 kg |
| 10 st 7 lb | 147 lb | 66.68 kg |
| 11 st 3 lb | 157 lb | 71.21 kg |
| 12 st 6 lb | 174 lb | 78.93 kg |
| 13 st 9 lb | 191 lb | 86.64 kg |
Practical Conversion Examples
Example 1: UK to US weight A British person weighs 11 stone 7 pounds. How much is that in pounds (US system)?
11 stone × 14 lb/st = 154 lb
154 lb + 7 lb = 161 pounds total
Example 2: UK to metric Someone weighs 12 stone 3 pounds. How many kilograms?
12 st 3 lb = (12 × 14) + 3 = 171 pounds
171 lb × 0.45359237 kg/lb = 77.56 kg
Example 3: Metric to UK A European weighs 68 kilograms. What is that in stones?
68 kg ÷ 6.35029318 kg/st = 10.71 stone
0.71 stone × 14 lb/st = 9.94 lb ≈ 10 lb
Answer: 10 stone 10 pounds
Example 4: Weight loss You lose 2 stone. How many kilograms is that?
2 stone × 6.35029318 kg/st = 12.70 kg (about 28 pounds)
Common Conversion Mistakes
1. Confusing Stones with Pounds
The mistake: Thinking "10 stone" = "10 pounds"
Reality:
- 10 stone = 140 pounds (10 × 14)
- 10 pounds = 0.714 stone
Example error: An American hears "I weigh 12 stone" and thinks 12 pounds (5.4 kg)—impossibly light!
- Correct: 12 stone = 168 pounds = 76 kg (normal adult weight)
How to avoid: Always multiply stones by 14 to get pounds.
2. Forgetting to Add the Extra Pounds
The mistake: Converting "11 stone 7" as "11 stone" (ignoring the 7 pounds)
Reality:
- 11 stone 7 = (11 × 14) + 7 = 154 + 7 = 161 pounds
- 11 stone = 154 pounds (7 pounds less!)
Why it matters: Those 7 pounds are 3.2 kg—significant in weight tracking.
Example: Weight loss from "12 st 10" to "11 st 8":
- Wrong: 12 st to 11 st = 14 lb loss
- Correct: 178 lb to 162 lb = 16 lb loss
3. Using Decimal Stones Incorrectly
The mistake: Saying "I weigh 11.5 stone" and thinking that's "11 stone 5 pounds"
Reality:
- 11.5 stone = 11 stone + 0.5 stone
- 0.5 stone = 0.5 × 14 = 7 pounds
- 11.5 stone = 11 stone 7 pounds (not 11 stone 5!)
Example error: "I lost 1.2 stone" ≠ "1 stone 2 pounds"
- Correct: 1.2 stone = 1 stone + (0.2 × 14) = 1 stone + 2.8 lb ≈ 1 stone 3 pounds
4. Rounding Errors in Stone-to-Kg Conversion
The mistake: Using "1 stone = 6.4 kg" (rounded)
Reality:
- 1 stone = 6.35029318 kg (EXACT)
- Rounding to 6.4 kg introduces error
Compounding errors:
- 15 stone × 6.4 kg = 96 kg (wrong)
- 15 stone × 6.35029318 kg = 95.25 kg (correct)
- Error: 0.75 kg (1.65 lb)
How to avoid: Use precise conversions: 6.35 kg per stone (or better, 6.35029318).
5. Mixing UK and US Pounds
The mistake: Thinking UK pounds differ from US pounds
Reality:
- Both use avoirdupois pounds: 1 lb = 0.45359237 kg (international standard since 1959)
- UK and US pounds are identical
Confusion source: The UK uses stones + pounds; the US uses pounds only. Same pound, different presentation.
Example:
- UK: 11 stone 7 = 161 pounds
- US: 161 pounds (no stones)
- Both mean: 73 kg
6. Assuming All Commonwealth Countries Use Stones
The mistake: Thinking Canada, Australia, and New Zealand use stones
Reality:
- UK and Ireland: Still use stones for body weight
- Canada, Australia, New Zealand: Fully metric (kilograms only)
- Former colonies: Mostly metric
Why the difference? UK/Ireland retained stones due to cultural exemption in metrication laws. Other Commonwealth nations metricated more completely.
Stone Conversion Formulas
To Kilogram:
To Gram:
To Milligram:
To Pound:
To Ounce:
To Ton (metric):
To Ton (US):
To Ton (UK):
To Microgram:
To Carat:
To Slug:
To Troy Ounce:
To Pennyweight:
To Grain:
To Dram:
To Quintal:
To Atomic Mass Unit:
To Pavan (India):
To Kati (India):
To Masha (India):
To Dina (India):
To Pras (India):
To Lota (India):
Frequently Asked Questions
Exactly 14 pounds. This is a defined constant. There are no regional variations—1 stone always equals 14 pounds in any context. Calculation examples:
- 5 stone = 5 × 14 = 70 pounds
- 12 stone = 12 × 14 = 168 pounds
- 0.5 stone = 0.5 × 14 = 7 pounds
Convert Stone
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