Pounds to Kilograms Conversion Formula — How to Convert lbs to kg
kilograms = pounds ÷ 2.20462
Or: kilograms = pounds × 0.453592
Step-by-Step lbs to kg Conversion Examples:
- •A 150 lb bodyweight:150 ÷ 2.20462 =68.04 kg
- •A 45 lb gym plate:45 ÷ 2.20462 =20.41 kg
- •A 200 lb shipping box:200 ÷ 2.20462 =90.72 kg
Why the Pounds to Kilograms Conversion Works & Common lbs to kg Converter Mistakes to Avoid
The international pound has been defined as exactly 0.453592 kilograms since 1959.
The Common lbs to kg Converter Mistake: Rounding 1 lb = 0.45 kg for competition totals. On a 200 lb total, the difference is nearly a full kilogram.
Pounds to Kilograms Real-World Size Comparison Table
If you're translating a US gym plate, a US bodyweight, or a US shipping label into metric, these are the numbers you'll meet most often.
| Pounds (lbs) | Kilograms (kg) | Real-World Size Benchmark |
|---|---|---|
| 1 lbs | 0.454 kg | A pound of butter |
| 45 lbs | 20.41 kg | A standard gym plate (nominal 20 kg) |
| 100 lbs | 45.36 kg | The 100 lb bodyweight benchmark |
| 150 lbs | 68.04 kg | Average adult bodyweight |
| 185 lbs | 83.91 kg | A common competition weight class |
| 200 lbs | 90.72 kg | A heavyweight threshold |
Where lbs-to-kg matters
Three situations: entering a metric competition from a US record, shipping a package internationally where the carrier uses metric, and any medical or fitness form that asks for kg.
- • Use lbs For: US gym plates, US bodyweight records, US shipping labels, US competition entries
- • Use kg For: EU competition records, Metric shipping forms, International bodyweight tracking, Medical records in kg
Rule of Thumb: Two anchors cover most of it: 45 lbs = 20 kg, and 100 lbs = 45 kg.
lbs to kg Converter in Spreadsheets — Spreadsheet Shortcut (Excel & Google Sheets)
=A1/2.20462 for lbs → kg. =A1*2.20462 for the reverse.
Pounds to Kilograms Conversion — Frequently Asked Questions
How do I convert lbs to kg?
Divide by 2.20462. For example, 150 lbs ÷ 2.20462 = 68.04 kg.
What is 1 pound in kilograms?
0.453592 kg.
What is 150 lbs in kg?
68.04 kg.
Is a 45 lb gym plate the same as 20 kg?
Not exactly. 45 lbs = 20.41 kg.
lbs to kg Quick-Reference Conversion Table
The conversions you'll use most when translating US weights into metric.
| To convert | Operation | Example |
|---|---|---|
| lbs → kg | ÷ 2.20462 | 150 lbs → 68.04 kg |
| kg → lbs | × 2.20462 | 70 kg → 154.32 lbs |
| lbs → g | × 453.592 | 1 lb → 453.59 g |
| g → lbs | ÷ 453.592 | 500 g → 1.10 lbs |