About

The conversion between kilograms and pounds is the most frequently performed mass calculation globally due to the divide between the Metric system (global) and the Imperial/US Customary systems. Whether for checking airline luggage allowances, monitoring body weight for fitness, or international parcel shipping, accuracy is vital. This tool converts kg to lbs with high decimal precision. Uniquely, it also supports the UK "Stone" system and provides a context for body mass index (BMI) related calculations.

Formulas

The standard conversion factor is:

m_(lb) = m_(kg) × 2.20462262

For UK Stone (st):

m_(st) = floor(m_(lb) ÷ 14)

Reference Data

Weight (kg)	Pounds (lbs)	Stones & Pounds (st lb)
1	2.20	0 st 2.2 lb
5	11.02	0 st 11.0 lb
10	22.05	1 st 8.0 lb
20	44.09	3 st 2.1 lb
50	110.23	7 st 12.2 lb
60	132.28	9 st 6.3 lb
70	154.32	11 st 0.3 lb
80	176.37	12 st 8.4 lb
90	198.42	14 st 2.4 lb
100	220.46	15 st 10.5 lb

Frequently Asked Questions

Legally and scientifically, 1 kilogram is defined as exactly 2.20462262185 pounds. For most practical applications, 2.2 or 2.205 is sufficient.

In the United Kingdom and Ireland, human body weight is almost exclusively discussed in "Stones and Pounds" rather than just pounds. 1 Stone equals 14 Pounds.

Yes. Standard airline limits are 23 kg (50 lbs) or 32 kg (70 lbs). This tool helps ensure you stay under these strict limits to avoid fees.