180 lb to kilograms.
180 lb = 81.65 kg. In UK stone, 180 lb is 12 st 12 lb.
What 180 lb means
- 180 lb is 81.6 kg, or 12 st 12 lb in UK stone.
- Among US men aged 20 and older, 81.6 kg is between the 25th and 50th percentile (25th = 75.4 kg; 50th = 86.6 kg).
- Among US women aged 20 and older, it is between the 50th and 75th percentile (50th = 73.5 kg; 75th = 89.2 kg).
- 81.6 kg is in the CDC healthy weight range (BMI 18.5 to less than 25) for adults from 180.8 to 210 cm (5′11″ to 6′11″) tall.
- The figure shows the BMI at this weight for 8 heights. The same weight gives a different BMI at each height.
How 81.6 kg compares by age
Percentile band of 81.6 kg (180.0 lb) among US adults in each age group (CDC, 2021–2023).
| Age | Men | Women |
|---|---|---|
| 20–29 | between the 25th and 50th percentile | between the 50th and 75th percentile |
| 30–39 | between the 25th and 50th percentile | between the 50th and 75th percentile |
| 40–49 | between the 25th and 50th percentile | between the 50th and 75th percentile |
| 50–59 | between the 25th and 50th percentile | between the 50th and 75th percentile |
| 60–69 | between the 25th and 50th percentile | between the 50th and 75th percentile |
| 70–79 | between the 25th and 50th percentile | between the 50th and 75th percentile |
How to convert
- Multiply by 0.45359237 (the exact kg in one pound): 180 × 0.45359237 = 81.65 kg.
To convert the other way, use the kilograms to pounds converter.
Nearby values
| lb | kg | Stone |
|---|---|---|
| 175 lb | 79.38 | 12 st 7 lb |
| 176 lb | 79.83 | 12 st 8 lb |
| 177 lb | 80.29 | 12 st 9 lb |
| 178 lb | 80.74 | 12 st 10 lb |
| 179 lb | 81.19 | 12 st 11 lb |
| 180 lb | 81.65 | 12 st 12 lb |
| 181 lb | 82.10 | 12 st 13 lb |
| 182 lb | 82.55 | 13 st 0 lb |
| 183 lb | 83.01 | 13 st 1 lb |
| 184 lb | 83.46 | 13 st 2 lb |
| 185 lb | 83.91 | 13 st 3 lb |
Questions people ask
Is 180 lbs heavy?
It depends on height and sex. Among US adults aged 20 and older, 81.6 kg is between the 25th and 50th percentile for men and between the 50th and 75th percentile for women (CDC, 2021–2023). A percentile is not a target.
For what height is 180 lbs a healthy weight?
81.6 kg gives a BMI of 18.5 to less than 25 for adults from 180.8 to 210 cm (5′11″ to 6′11″) tall. BMI is a screening measure only. Talk with a health care provider about your weight.
What is 180 lbs in stone?
180 lb is 12 st 12 lb. One stone is 14 lb, or 6.35 kg.
Sources: NIST Handbook 44, Appendix C (1 pound = 0.45359237 kg exactly); NCHS, Anthropometric Reference Data, United States, August 2021–August 2023 (Vital Health Stat 3, no. 50, 2025), Tables 3 and 7; CDC: Adult BMI Categories.
Sources & verification
Unit definitions used by this converter:
- pound: 1 lb = 0.45359237 kg, exact — NIST SP 811, Appendix B footnotes, NIST Handbook 44 (2026), Appendix C
- kilogram: 1 kg = 1 kg, exact — BIPM SI Brochure, 9th ed.
Other pounds to kilograms values
120 lb · 130 lb · 135 lb · 140 lb · 150 lb · 160 lb · 170 lb · 190 lb · 200 lb