Pounds to Stone Converter
Convert between pounds (lbs) and stone instantly with our free UK weight converter. The stone is a traditional British Imperial unit where 1 stone = 14 pounds. Whether you're tracking your weight, comparing fitness progress, or understanding measurements from American sources, this converter provides accurate results with NHS-aligned healthy weight information.
Quick Reference: Common Weight Conversions
Pounds to Stone
Stone to Pounds
Popular Conversions (click to convert)
Understanding Stone and Pounds in the UK
The stone is a unit of weight that has been used in the British Isles for centuries. While most countries exclusively use the metric system (kilograms), the UK maintains a unique dual system where kilograms are used officially (particularly by the NHS) but stone and pounds remain the preferred choice for most British people when discussing body weight.
The Conversion Formulas
Stone = Pounds ÷ 14
Remaining Pounds = Pounds mod 14
Stone to Pounds:
Total Pounds = (Stone × 14) + Additional Pounds
Worked Example: Converting 175 Pounds to Stone
- Divide by 14: 175 ÷ 14 = 12.5
- Take the whole number: 12 stone
- Calculate remainder: 175 - (12 × 14) = 175 - 168 = 7 pounds
- Result: 175 lbs = 12 stone 7 pounds
Worked Example: Converting 14 Stone 6 Pounds to Pounds
- Multiply stone by 14: 14 × 14 = 196 pounds
- Add remaining pounds: 196 + 6 = 202 pounds
- Result: 14 st 6 lbs = 202 pounds
History of the Stone Unit
The stone as a unit of measurement dates back to ancient times when actual stones were used as counterweights in trade. In medieval Britain, the stone varied in weight depending on the commodity being weighed - wool, meat, and other goods each had different stone weights!
The standardisation to 14 pounds occurred with the Weights and Measures Act of 1824, which established the Imperial system used throughout the British Empire. This 14-pound stone became the standard for weighing people and remains in common use today despite the metric system's introduction in 1965.
Why Do British People Use Stone?
Cultural familiarity plays a significant role. Most British people over 40 learned their weight in stone as children, and this preference has passed down through generations. Bathroom scales in the UK typically show both stone/pounds and kilograms. The NHS officially uses kilograms, but GPs often convert to stone when speaking with patients because it's more meaningful to them.
Complete Stone to Pounds Conversion Table
This comprehensive table shows conversions from 7 stone to 25 stone, covering the typical range of adult body weights. Each entry includes the equivalent in pounds and kilograms for easy reference.
| Stone | Pounds (lbs) | Kilograms (kg) | Notes |
|---|---|---|---|
| 7 stone | 98 lbs | 44.5 kg | Lower end of healthy range for shorter adults |
| 8 stone | 112 lbs | 50.8 kg | Healthy weight for 5'0" - 5'3" |
| 9 stone | 126 lbs | 57.2 kg | Healthy weight for 5'2" - 5'6" |
| 10 stone | 140 lbs | 63.5 kg | Healthy weight for 5'5" - 5'9" |
| 11 stone | 154 lbs | 69.9 kg | Healthy weight for 5'8" - 6'0" |
| 12 stone | 168 lbs | 76.2 kg | Healthy weight for 5'10" - 6'2" |
| 13 stone | 182 lbs | 82.6 kg | Upper healthy for tall individuals |
| 14 stone | 196 lbs | 88.9 kg | Often a weight-loss goal milestone |
| 15 stone | 210 lbs | 95.3 kg | Popular weight-loss target |
| 16 stone | 224 lbs | 101.6 kg | 100+ kg benchmark |
| 17 stone | 238 lbs | 108.0 kg | |
| 18 stone | 252 lbs | 114.3 kg | |
| 19 stone | 266 lbs | 120.7 kg | |
| 20 stone | 280 lbs | 127.0 kg | 20-stone milestone |
| 21 stone | 294 lbs | 133.4 kg | |
| 22 stone | 308 lbs | 139.7 kg | |
| 23 stone | 322 lbs | 146.1 kg | |
| 24 stone | 336 lbs | 152.4 kg | |
| 25 stone | 350 lbs | 158.8 kg |
Detailed Pounds to Stone Reference
For precise conversions, especially when tracking weight loss or following a fitness programme, here is a comprehensive breakdown covering 100 to 300 lbs in 5-pound increments -- the typical range for adult body weights:
| Pounds | Stone & Pounds | Decimal Stone | Kilograms |
|---|---|---|---|
| 100 lbs | 7 st 2 lbs | 7.14 st | 45.4 kg |
| 105 lbs | 7 st 7 lbs | 7.50 st | 47.6 kg |
| 110 lbs | 7 st 12 lbs | 7.86 st | 49.9 kg |
| 115 lbs | 8 st 3 lbs | 8.21 st | 52.2 kg |
| 120 lbs | 8 st 8 lbs | 8.57 st | 54.4 kg |
| 125 lbs | 8 st 13 lbs | 8.93 st | 56.7 kg |
| 130 lbs | 9 st 4 lbs | 9.29 st | 59.0 kg |
| 135 lbs | 9 st 9 lbs | 9.64 st | 61.2 kg |
| 140 lbs | 10 st 0 lbs | 10.00 st | 63.5 kg |
| 145 lbs | 10 st 5 lbs | 10.36 st | 65.8 kg |
| 150 lbs | 10 st 10 lbs | 10.71 st | 68.0 kg |
| 155 lbs | 11 st 1 lbs | 11.07 st | 70.3 kg |
| 160 lbs | 11 st 6 lbs | 11.43 st | 72.6 kg |
| 165 lbs | 11 st 11 lbs | 11.79 st | 74.8 kg |
| 170 lbs | 12 st 2 lbs | 12.14 st | 77.1 kg |
| 175 lbs | 12 st 7 lbs | 12.50 st | 79.4 kg |
| 180 lbs | 12 st 12 lbs | 12.86 st | 81.6 kg |
| 185 lbs | 13 st 3 lbs | 13.21 st | 83.9 kg |
| 190 lbs | 13 st 8 lbs | 13.57 st | 86.2 kg |
| 195 lbs | 13 st 13 lbs | 13.93 st | 88.5 kg |
| 200 lbs | 14 st 4 lbs | 14.29 st | 90.7 kg |
| 205 lbs | 14 st 9 lbs | 14.64 st | 93.0 kg |
| 210 lbs | 15 st 0 lbs | 15.00 st | 95.3 kg |
| 215 lbs | 15 st 5 lbs | 15.36 st | 97.5 kg |
| 220 lbs | 15 st 10 lbs | 15.71 st | 99.8 kg |
| 225 lbs | 16 st 1 lbs | 16.07 st | 102.1 kg |
| 230 lbs | 16 st 6 lbs | 16.43 st | 104.3 kg |
| 235 lbs | 16 st 11 lbs | 16.79 st | 106.6 kg |
| 240 lbs | 17 st 2 lbs | 17.14 st | 108.9 kg |
| 245 lbs | 17 st 7 lbs | 17.50 st | 111.1 kg |
| 250 lbs | 17 st 12 lbs | 17.86 st | 113.4 kg |
| 255 lbs | 18 st 3 lbs | 18.21 st | 115.7 kg |
| 260 lbs | 18 st 8 lbs | 18.57 st | 117.9 kg |
| 265 lbs | 18 st 13 lbs | 18.93 st | 120.2 kg |
| 270 lbs | 19 st 4 lbs | 19.29 st | 122.5 kg |
| 275 lbs | 19 st 9 lbs | 19.64 st | 124.7 kg |
| 280 lbs | 20 st 0 lbs | 20.00 st | 127.0 kg |
| 285 lbs | 20 st 5 lbs | 20.36 st | 129.3 kg |
| 290 lbs | 20 st 10 lbs | 20.71 st | 131.5 kg |
| 295 lbs | 21 st 1 lbs | 21.07 st | 133.8 kg |
| 300 lbs | 21 st 6 lbs | 21.43 st | 136.1 kg |
NHS Healthy Weight Guidelines
The NHS uses Body Mass Index (BMI) to determine healthy weight ranges. While BMI has limitations (it doesn't account for muscle mass or body composition), it provides a useful general guideline. Here's how the NHS categorises BMI:
BMI below 18.5
BMI 18.5 to 24.9
BMI 25 to 29.9
BMI 30 or above
Healthy Weight Ranges by Height (in Stone)
| Height | Healthy Range (Stone) | Healthy Range (lbs) | Healthy Range (kg) |
|---|---|---|---|
| 5'0" (152cm) | 6st 10lb - 9st 2lb | 94 - 128 lbs | 43 - 58 kg |
| 5'2" (158cm) | 7st 3lb - 9st 11lb | 101 - 137 lbs | 46 - 62 kg |
| 5'4" (163cm) | 7st 9lb - 10st 6lb | 107 - 146 lbs | 49 - 66 kg |
| 5'6" (168cm) | 8st 2lb - 11st 0lb | 114 - 154 lbs | 52 - 70 kg |
| 5'8" (173cm) | 8st 9lb - 11st 9lb | 121 - 163 lbs | 55 - 74 kg |
| 5'10" (178cm) | 9st 2lb - 12st 5lb | 128 - 173 lbs | 58 - 78 kg |
| 6'0" (183cm) | 9st 9lb - 13st 0lb | 135 - 182 lbs | 62 - 83 kg |
| 6'2" (188cm) | 10st 3lb - 13st 10lb | 143 - 192 lbs | 65 - 87 kg |
| 6'4" (193cm) | 10st 10lb - 14st 6lb | 150 - 202 lbs | 68 - 92 kg |
Important Note About BMI
BMI is a general guideline and may not be accurate for athletes with high muscle mass, pregnant women, the elderly, or people with certain medical conditions. If you have concerns about your weight, please consult with your GP or a registered dietitian for personalised advice.
Using These Conversions Internationally
If you're travelling, shopping online, or using fitness apps from different countries, understanding how weight measurements differ is essential:
Country Weight Preferences
| Country/Region | Primary Unit | Secondary Unit |
|---|---|---|
| United Kingdom | Stone & Pounds | Kilograms (official) |
| Ireland | Stone & Pounds | Kilograms |
| United States | Pounds only | — |
| Canada | Pounds | Kilograms |
| Australia | Kilograms | — |
| Europe (EU) | Kilograms | — |
| Most of world | Kilograms | — |
Tip: American Fitness Equipment
Many home fitness scales, gym equipment, and American fitness apps display weight only in pounds. If you're used to thinking in stone, remember to divide by 14 to get your weight in stone, or use this converter. Popular apps like MyFitnessPal allow you to set your preferred unit to stone.
Quick Mental Maths Tips
Converting Pounds to Stone in Your Head
- Rule of thumb: Every 14 lbs = 1 stone
- Quick estimate: Divide by 14 (or divide by 7 and halve)
- Landmark numbers to memorise:
- 140 lbs = exactly 10 stone
- 154 lbs = exactly 11 stone
- 168 lbs = exactly 12 stone
- 196 lbs = exactly 14 stone
- 210 lbs = exactly 15 stone
Weight Loss Milestones in Stone
Many people in the UK set weight loss goals using stone as their milestone markers. Understanding how these translate can help with motivation and tracking:
Common Weight Loss Goals
| Goal | Pounds Lost | Kilograms Lost | Typical Timeline |
|---|---|---|---|
| Half a stone | 7 lbs | 3.2 kg | 4-8 weeks |
| 1 stone | 14 lbs | 6.4 kg | 8-14 weeks |
| 1.5 stone | 21 lbs | 9.5 kg | 12-20 weeks |
| 2 stone | 28 lbs | 12.7 kg | 16-28 weeks |
| 3 stone | 42 lbs | 19.1 kg | 24-42 weeks |
| 5 stone | 70 lbs | 31.8 kg | 40-70 weeks |
Note: NHS guidelines suggest aiming for 1-2 lbs (0.5-1 kg) per week for sustainable weight loss. These timelines reflect safe, gradual progress.
NHS Weight Loss Programmes
The NHS offers free weight management services including the NHS Weight Loss Plan app and local weight management programmes. These typically measure progress in kilograms but staff are familiar with converting to stone for patients who prefer this unit. Your GP can refer you to local services if your BMI is 30 or above (or 27.5+ for certain ethnic groups).
Frequently Asked Questions
How many pounds are in a stone?
One stone equals exactly 14 pounds (lbs). This has been the standard since the Weights and Measures Act of 1824. To convert stone to pounds, multiply by 14. To convert pounds to stone, divide by 14.
What is 14 stone in pounds?
14 stone equals 196 pounds (14 × 14 = 196 lbs). In kilograms, this is approximately 88.9 kg. This weight often serves as a goal or milestone for people on weight loss journeys in the UK.
What is 15 stone in pounds?
15 stone equals 210 pounds (15 × 14 = 210 lbs), which is approximately 95.3 kg. Reaching under 15 stone (sub-210 lbs) is a common weight-loss goal for many British people.
Why does the UK use stone for weight?
The stone is a traditional British Imperial unit that has been used for centuries. Despite the UK officially adopting the metric system in 1965, stone remains culturally embedded for personal weight due to generational familiarity. Most British bathroom scales show both stone/pounds and kilograms.
How do I convert 200 pounds to stone?
200 pounds equals 14 stone 4 pounds. Calculate by dividing: 200 ÷ 14 = 14.29 stone, which means 14 whole stone plus 0.29 × 14 = 4 pounds remainder. So 200 lbs = 14 st 4 lbs (approximately 90.7 kg).
What is a healthy weight in stone for my height?
Healthy weight varies by height. For example, for someone 5'6" (168cm), the NHS healthy BMI range corresponds to approximately 8st 2lb to 11st 0lb. Use our BMI calculator for a personalised healthy weight range based on your exact height.
How do I convert stone and pounds to just pounds?
Multiply the stone by 14, then add any remaining pounds. For example, 12 stone 7 pounds = (12 × 14) + 7 = 168 + 7 = 175 pounds total. This is useful for American fitness apps that only display pounds.
What is the difference between stone, pounds, and kilograms?
Stone and pounds are Imperial units (1 stone = 14 pounds), while kilograms are metric. Conversions: 1 kg = 2.205 pounds, 1 stone = 6.35 kg, 1 pound = 0.454 kg. The UK uses both systems - NHS uses kg officially, but most people prefer stone for body weight.
Pro Tips for Accurate Results
- Double-check your input values before calculating
- Use the correct unit format (metric or imperial)
- For complex calculations, break them into smaller steps
- Bookmark this page for quick future access
Understanding Your Results
Our Pounds To Stone provides:
- Instant calculations - Results appear immediately
- Accurate formulas - Based on official UK standards
- Clear explanations - Understand how results are derived
- 2025/26 updated - Using current rates and regulations
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