Apex Conversion

Pounds to Kilograms Conversion Chart

Quick-reference chart converting pounds (lbs) to kilograms (kg). Covers 1–500 lb at common intervals with the exact conversion formula.

For a custom value not in this chart, use the interactive Pound to Kilogram converter.

Pound (lb)Kilogram (kg)
1 lb0.453592 kg
2 lb0.907185 kg
3 lb1.36078 kg
5 lb2.26796 kg
10 lb4.53592 kg
15 lb6.80389 kg
20 lb9.07185 kg
25 lb11.3398 kg
30 lb13.6078 kg
40 lb18.1437 kg
50 lb22.6796 kg
60 lb27.2155 kg
70 lb31.7515 kg
75 lb34.0194 kg
80 lb36.2874 kg
100 lb45.3592 kg
110 lb49.8952 kg
120 lb54.4311 kg
130 lb58.967 kg
140 lb63.5029 kg
150 lb68.0389 kg
175 lb79.3787 kg
200 lb90.7185 kg
250 lb113.398 kg
300 lb136.078 kg
400 lb181.437 kg
500 lb226.796 kg

Conversion Formula

kg = lbs × 0.453592
Example: 150 lbs × 0.453592 = 68.04 kg
Quick estimate: multiply lbs by 0.45 (within ~0.6%)

Body weight anchors (lb → kg):
  100 lb = 45.36 kg   180 lb = 81.65 kg
  120 lb = 54.43 kg   200 lb = 90.72 kg
  150 lb = 68.04 kg   220 lb = 99.79 kg

Gym plate conversions (US → metric):
  45 lb plate = 20.41 kg   25 lb plate = 11.34 kg
  35 lb plate = 15.88 kg   10 lb plate =  4.54 kg
  50 lb airline limit = 22.68 kg

Frequently Asked Questions

How many kg is 150 pounds?

150 pounds equals approximately 68.04 kilograms. The calculation: 150 × 0.453592 = 68.04 kg. A quick mental estimate: 150 × 0.45 = 67.5 kg.

How many kg is 100 pounds?

100 pounds equals approximately 45.36 kilograms. This is a useful anchor: 100 lbs ≈ 45.4 kg, so 200 lbs ≈ 90.7 kg and 50 lbs ≈ 22.7 kg.

What is the exact conversion factor from lbs to kg?

One pound equals exactly 0.45359237 kilograms by international definition. For practical purposes, 0.4536 is accurate to 4 decimal places and sufficient for everyday use.

What is 50 lb in kg?

50 × 0.453592 = 22.68 kg — this is the standard US domestic airline checked baggage weight limit. International limit is typically 23 kg (50.71 lb).

How much does a 225 lb barbell weigh in kg?

225 lb × 0.453592 = 102.06 kg. A standard loaded bar: 45 lb bar + two 45 lb plates per side = 45 + 90 + 90 = 225 lb. Three plates per side = 315 lb = 142.88 kg.

Related Converters

Related Charts

Related Guides

Need a custom value?

This chart covers common values. For any number, use the interactive converter.

Use the interactive converter →

All conversion values are calculated using internationally recognized conversion factors. Results are provided for general informational purposes — verify critical values independently. Read our full disclaimer.