Kilograms to Pounds Converter UK
Convert kilograms to pounds and stone instantly. Perfect for body weight, luggage, fitness and shipping. 1 kg = 2.205 lbs = 0.157 stone. Includes NHS weight categories.
⚖ Kilograms to Pounds Converter
Quick convert common weights:
Conversion Formulas
KG to Stone: Stone = Kilograms ÷ 6.35029
Example: 70 kg × 2.205 = 154.3 lbs = 11 stone exactly
Quick Mental Maths Tip
To convert kg to lbs quickly: Double the kg and add 10%
Example: 70 kg → 140 + 14 = 154 lbs ✓
⚖ Pounds to Kilograms Converter
LBS to KG Formula
LBS to Stone: Stone = Pounds ÷ 14
Example: 154 lbs × 0.4536 = 69.9 kg (approximately 70 kg)
Quick Mental Maths Tip
To convert lbs to kg quickly: Halve the lbs and subtract 10%
Example: 154 lbs → 77 - 7.7 = ~70 kg ✓
📊 BMI Calculator (NHS Standards)
Calculate your Body Mass Index using either kg or lbs. Results based on NHS healthy weight guidelines.
NHS BMI Categories
The NHS uses these BMI ranges to categorise adult weight:
Note: BMI is a general guide. Athletes and muscular individuals may have higher BMI without excess fat. The NHS recommends discussing your weight with a GP if you have concerns.
📝 Batch Weight Converter
Convert multiple weights at once. Enter values separated by commas or new lines.
KG to LBS Conversion Table
Common weight conversions for quick reference:
| Kilograms | Pounds | Stone & Lbs | Common Use |
|---|---|---|---|
| 40 kg | 88.2 lbs | 6 st 4 lbs | Child/petite adult |
| 50 kg | 110.2 lbs | 7 st 12 lbs | Small adult |
| 55 kg | 121.3 lbs | 8 st 9 lbs | Average woman (UK) |
| 60 kg | 132.3 lbs | 9 st 6 lbs | Average adult |
| 65 kg | 143.3 lbs | 10 st 3 lbs | Average adult |
| 70 kg | 154.3 lbs | 11 st 0 lbs | Average UK man |
| 75 kg | 165.3 lbs | 11 st 11 lbs | Average man |
| 80 kg | 176.4 lbs | 12 st 8 lbs | Large adult |
| 85 kg | 187.4 lbs | 13 st 5 lbs | Large adult |
| 90 kg | 198.4 lbs | 14 st 2 lbs | Muscular adult |
| 100 kg | 220.5 lbs | 15 st 10 lbs | Fitness milestone |
| 110 kg | 242.5 lbs | 17 st 4 lbs | Very large adult |
| 120 kg | 264.6 lbs | 18 st 12 lbs | Heavy adult |
🇬🇧 UK Average Weight Statistics (2024)
Airline Luggage Weight Limits (UK)
Common luggage allowances from UK airports:
Tip: Budget airlines (Ryanair, easyJet) often have stricter limits. Always check your specific airline's policy before packing.
Why the UK Uses Stone, Kilograms, and Pounds
The UK has a unique relationship with weight measurements, using a mix of metric and imperial systems:
Stone (14 lbs per stone)
- Used for: Body weight in everyday conversation
- Origin: Medieval trade weight, standardised in 1824
- Common in: UK, Ireland (rarely used elsewhere)
- Example: "I weigh 11 stone" = 70 kg = 154 lbs
Kilograms (metric)
- Used for: Medical records, prescriptions, official documents
- Required by: NHS, pharmacies, EU regulations
- Common in: Younger generations, sports, international contexts
Pounds
- Used for: Newborn birth weights, some gym contexts
- Common in: USA (primary), UK (alongside stone)
- Example: "Baby weighed 8 lbs 4 oz"
1 stone = 14 pounds = 6.35029 kg
1 kg = 2.20462 pounds = 0.1575 stone
1 pound = 0.4536 kg = 16 ounces
Gym Weight Plate Conversions
UK gyms typically use metric (kg) plates, whilst US gyms use imperial (lb) plates:
| Equipment | Metric (kg) | Imperial (lbs) |
|---|---|---|
| Olympic Barbell | 20 kg | 44 lbs (45 lb bars in US) |
| Women's Olympic Barbell | 15 kg | 33 lbs |
| Large Plate | 20 kg | 44 lbs (45 lb in US) |
| Medium Plate | 10 kg | 22 lbs (25 lb in US) |
| Small Plate | 5 kg | 11 lbs (10 lb in US) |
| Kettlebell (standard) | 16 kg | 35 lbs |
Note: A "45 lb plate" (20.4 kg) is slightly heavier than a 20 kg plate (44 lbs). When following American workout programmes, check which system is being used!
Practical Example: NHS Weight Categories in Both Units
The NHS uses Body Mass Index (BMI) to classify weight categories, but many people in the UK think in stones and pounds rather than kilograms. Here is a quick reference for an average-height person (5 ft 7 in / 170 cm): Underweight is below 53.5 kg (8 st 6 lb), healthy weight ranges from 53.5 to 72.3 kg (8 st 6 lb to 11 st 5 lb), overweight is 72.3 to 86.8 kg (11 st 5 lb to 13 st 9 lb), and obese is above 86.8 kg (13 st 9 lb). When visiting your GP, weights are typically recorded in kilograms for medical records, but knowing both measurements helps you track your progress at home. The conversion factor of 1 kg = 2.20462 lbs is precise, and remembering that 14 pounds equals 1 stone makes mental conversions easier for everyday use in the UK.
Frequently Asked Questions
1 kilogram equals 2.20462 pounds. In the UK, weight is often also expressed in stone, where 1 kg = 0.157 stone. To convert kg to lbs, multiply by 2.205. For quick mental maths, double the kg value and add 10% - e.g., 70kg becomes 140 + 14 = 154 lbs. This method is accurate within 1%.
70 kilograms equals 154.3 pounds or exactly 11 stone (11 st 0 lbs). This is roughly the average weight for an adult male in the UK according to NHS statistics. 11 stone is a common reference point in British everyday conversation and represents a healthy weight for someone around 175cm (5'9") tall.
The UK traditionally uses stone (14 pounds per stone) for body weight because it predates metrication and remains culturally ingrained. Whilst the NHS officially uses kilograms for medical records, stone remains popular in everyday British conversation. 1 stone = 6.35 kg = 14 lbs. Ireland also uses stone, but it's rarely used elsewhere in the world.
The NHS uses BMI to categorise healthy weight. For an average-height adult (175cm/5'9"), healthy weight is approximately 57-77 kg (125-170 lbs or 9-12 stone). The NHS recommends a BMI between 18.5-24.9 as healthy. GP surgeries and hospitals in the UK record weight in kilograms for medical accuracy, though many people still think in stone.