KG to LBS Converter
Last updated: February 2026
Convert kilograms to pounds, stones, and ounces instantly with UK-specific formats
Kilograms to Pounds Converter
Common Weight Conversions
| Kilograms | Pounds | Stones & Lbs | Typical Context |
|---|---|---|---|
| 50 kg | 110.23 lbs | 7 st 12 lbs | Light adult |
| 55 kg | 121.25 lbs | 8 st 9 lbs | Petite woman |
| 60 kg | 132.28 lbs | 9 st 6 lbs | Average woman |
| 65 kg | 143.30 lbs | 10 st 3 lbs | Healthy weight |
| 70 kg | 154.32 lbs | 11 st 0 lbs | Average adult |
| 75 kg | 165.35 lbs | 11 st 11 lbs | Average man |
| 80 kg | 176.37 lbs | 12 st 8 lbs | Athletic build |
| 85 kg | 187.39 lbs | 13 st 5 lbs | Larger build |
| 90 kg | 198.42 lbs | 14 st 2 lbs | Heavy build |
| 100 kg | 220.46 lbs | 15 st 10 lbs | Very heavy |
Pounds to Kilograms Converter
Pounds to Kilograms Reference
| Pounds | Kilograms | Stones |
|---|---|---|
| 100 lbs | 45.36 kg | 7 st 2 lbs |
| 120 lbs | 54.43 kg | 8 st 8 lbs |
| 140 lbs | 63.50 kg | 10 st 0 lbs |
| 150 lbs | 68.04 kg | 10 st 10 lbs |
| 160 lbs | 72.57 kg | 11 st 6 lbs |
| 180 lbs | 81.65 kg | 12 st 12 lbs |
| 200 lbs | 90.72 kg | 14 st 4 lbs |
| 220 lbs | 99.79 kg | 15 st 10 lbs |
Stone & Pounds Converter
Convert between UK stones/pounds and metric kilograms
Understanding the UK Stone System
The stone is a traditional unit of weight used predominantly in the United Kingdom and Ireland. One stone equals exactly 14 pounds or approximately 6.35 kilograms.
Historical Origin
The stone has been used in Britain since the 14th century, originally for weighing wool. Different trades had different stone weights until it was standardised at 14 pounds in 1835.
Modern UK Usage
While the UK officially uses kilograms, stones remain popular for personal weight. You'll hear "I weigh 12 stone" rather than "76 kg" in everyday conversation.
NHS Records
The NHS uses kilograms in all medical records and prescriptions. However, many UK clinics still have scales showing both stones and kilograms.
Stone Conversion Reference
| Stones | Pounds | Kilograms |
|---|---|---|
| 8 stone | 112 lbs | 50.8 kg |
| 9 stone | 126 lbs | 57.2 kg |
| 10 stone | 140 lbs | 63.5 kg |
| 11 stone | 154 lbs | 69.9 kg |
| 12 stone | 168 lbs | 76.2 kg |
| 13 stone | 182 lbs | 82.6 kg |
| 14 stone | 196 lbs | 88.9 kg |
| 15 stone | 210 lbs | 95.3 kg |
| 16 stone | 224 lbs | 101.6 kg |
Gym Weight Plates Converter
UK gyms use both kilogram and pound plates. Convert between them to track your progress.
Standard Gym Weight Plates (UK)
Most UK gyms use kilogram plates. Here are the common plate sizes and their pound equivalents:
Olympic Barbell Standards
| Equipment | Weight (kg) | Weight (lbs) |
|---|---|---|
| Men's Olympic Bar | 20 kg | 44 lbs |
| Women's Olympic Bar | 15 kg | 33 lbs |
| EZ Curl Bar | 10-12 kg | 22-26 lbs |
| Trap Bar | 20-25 kg | 44-55 lbs |
| Smith Machine Bar | 7-15 kg | 15-33 lbs |
Gym Weight Tips
- Progressive overload: Add 2.5 kg (5.5 lbs) per week for upper body, 5 kg (11 lbs) for lower body
- Plate math: Remember the bar weight! A "60 kg bench" is actually 60 kg including the 20 kg bar
- Conversion tip: Multiply kg by 2.2 to get approximate lbs quickly
- UK vs US gyms: Most UK commercial gyms use kg plates; some older gyms may have mixed kg/lbs
How to Convert Kilograms to Pounds
Converting between kilograms and pounds is essential in the UK, where both metric and imperial measurements are used. The kilogram is the official SI unit, but many Britons still think in stones and pounds for body weight.
KG to LBS: Pounds = Kilograms × 2.20462
LBS to KG: Kilograms = Pounds ÷ 2.20462
KG to Stone: Stones = Kilograms × 0.157473
Stone to KG: Kilograms = Stones × 6.35029
Step-by-Step Conversion Examples
Example 1: 70 kg to pounds
In stones: 154.32 ÷ 14 = 11.02
= 11 stone 0.3 lbs
Example 2: 85 kg to stones
187.39 ÷ 14 = 13.38
= 13 stone 5.4 lbs
Example 3: 150 lbs to kg
UK Weight Measurement Context
Understanding when to use kilograms, pounds, or stones in the UK depends on the context. Here's a guide to typical usage:
| Context | Commonly Used | Official/Legal |
|---|---|---|
| Personal body weight | Stones & pounds | Kilograms |
| NHS medical records | Kilograms | Kilograms |
| Prescription dosages | Kilograms | Kilograms |
| Gym/fitness | Kilograms | Kilograms |
| Baby birth weight | Pounds & ounces | Grams/kg |
| Food packaging | Grams/kg | Grams/kg |
| Cooking recipes | Grams (UK) / oz (US) | Grams |
| Airline baggage | Kilograms | Kilograms |
Baby Weight Conversions
In the UK, baby weights are traditionally announced in pounds and ounces ("7 pounds 5 ounces"), though the NHS records weights in grams and kilograms.
| Pounds & Oz | Kilograms | Grams | Classification |
|---|---|---|---|
| 5 lbs 8 oz | 2.50 kg | 2,495 g | Low birth weight |
| 6 lbs 0 oz | 2.72 kg | 2,722 g | Normal (lower) |
| 6 lbs 8 oz | 2.95 kg | 2,948 g | Normal |
| 7 lbs 0 oz | 3.18 kg | 3,175 g | Normal |
| 7 lbs 5 oz | 3.32 kg | 3,317 g | Average UK baby |
| 8 lbs 0 oz | 3.63 kg | 3,629 g | Normal |
| 8 lbs 13 oz | 4.00 kg | 3,997 g | Above average |
| 9 lbs 15 oz | 4.50 kg | 4,500 g | Large baby |
NHS Baby Weight Guidelines
The NHS considers a healthy birth weight to be between 2.5 kg (5 lbs 8 oz) and 4.5 kg (9 lbs 15 oz). The average UK baby weighs approximately 3.3 kg (7 lbs 5 oz).
Airline Baggage Weight Limits
Knowing weight conversions is crucial for international travel. Here are common UK airline baggage allowances:
| Baggage Type | Typical Limit (kg) | Equivalent (lbs) |
|---|---|---|
| Hand luggage | 7-10 kg | 15-22 lbs |
| Checked bag (economy) | 23 kg | 50.7 lbs |
| Checked bag (business) | 32 kg | 70.5 lbs |
| Excess baggage fee threshold | 23-32 kg | 50-70 lbs |
Travel Weight Tips
- Check your airline: Limits vary by carrier and ticket class
- Per bag limit: The 23 kg limit is per suitcase, not total
- Weigh at home: Avoid airport surprises by weighing luggage before you leave
- US airlines: May show limits in pounds (50 lbs = 22.7 kg)
Weight Conversion Tips & Tricks
Quick KG to LBS
Double + 10%: Double the kg and add 10% of the result.
80 kg → 80×2=160, 160+16=176 lbs
Quick LBS to KG
Halve - 10%: Halve the lbs and subtract 10% of the result.
180 lbs → 180÷2=90, 90-9=81 kg
Stone Shortcut
×6.35: Multiply stones by 6.35 to get approximate kg.
12 stone → 12×6.35=76.2 kg
Memorable Benchmarks
Key values:
- 100 kg ≈ 220 lbs ≈ 15.7 st
- 70 kg ≈ 154 lbs ≈ 11 st
- 45 kg ≈ 100 lbs ≈ 7 st
Common Weight Conversion Mistakes
- Rounding too early: Use 2.20462, not 2.2, for accurate results on larger weights
- Confusing stones: 1 stone = 14 pounds (not 10) - a common error for non-UK visitors
- Forgetting the bar: In gym terms, "bench 100 kg" includes the 20 kg bar
- Metric/Imperial mixing: Don't combine 500g flour with 1 lb butter in recipes
- Baby weight confusion: UK uses lbs/oz conversationally but NHS records in grams
Frequently Asked Questions
1 kilogram equals exactly 2.20462 pounds (lbs). This is the internationally standardised conversion factor used by the NHS, scientific institutions, and official bodies worldwide. For quick mental calculations, rounding to 2.2 lbs per kg gives a close approximation.
70 kg equals 154.32 pounds. In UK stone format, this is 11 stone 0.3 lbs. This is close to the average weight for an adult and represents a healthy BMI for someone around 5'7" to 5'9" tall.
The stone (14 pounds) has been used in Britain since medieval times. Although the UK officially adopted the metric system, cultural tradition keeps stones popular for personal body weight. You'll commonly hear "I weigh 12 stone" rather than "76 kg" in everyday conversation. The NHS uses kilograms in medical records, but many GP surgeries still have scales showing both measurements.
First, multiply the kilograms by 2.20462 to get the total in pounds. Then divide by 14 to get the number of stones. The remainder (multiply the decimal by 14) gives you the remaining pounds. Example: 75 kg × 2.20462 = 165.35 lbs. 165.35 ÷ 14 = 11.81 stones = 11 stone 11.3 lbs.
Most modern UK gyms use kilogram plates and equipment. Standard Olympic barbell plates are colour-coded: 25 kg (red), 20 kg (blue), 15 kg (yellow), 10 kg (green), 5 kg (white), 2.5 kg (red/smaller), and 1.25 kg (chrome). Some older gyms may have pound plates, particularly those with equipment imported from the US.
A healthy weight depends on height and is measured using BMI (Body Mass Index). A BMI of 18.5-24.9 is considered healthy. For example, someone 170 cm (5'7") tall would be healthy between 53-72 kg.
Someone 180 cm (5'11") tall would be healthy between 60-81 kg. Use our BMI calculator for personalised results based on your height.
To convert baby weight from pounds and ounces to kilograms: First convert ounces to decimal pounds (oz ÷ 16), add to pounds, then divide by 2.20462. Example: 7 lbs 5 oz = 7 + (5÷16) = 7.3125 lbs = 7.3125 ÷ 2.20462 = 3.32 kg (3,320 grams). The NHS records baby weights in grams.
Standard UK airline checked baggage is typically 23 kg, which equals 50.7 lbs. Business class often allows 32 kg (70.5 lbs). Hand luggage limits are usually 7-10 kg (15-22 lbs).
US airlines may show 50 lbs (22.7 kg) instead. Always check your specific airline's policy as limits vary.