113 lbs BMI: Is 113 Pounds Healthy for Your Height?
If you weigh 113 lbs (51.3 kg), your BMI is in the healthy range (18.5–24.9) if you are between about 4'9" and 5'5" tall, and in the underweight range (below 18.5) if you are 5'6" or taller. For example, 113 lbs is a BMI of 22.1 at 5'0", 19.4 at 5'4" and 17.2 at 5'8". BMI is a screening tool, not a diagnosis.
BMI at 113 lbs by Height
BMI = (weight in lb × 703) ÷ (height in inches)². For 113 lbs:
| Height | BMI at 113 lbs | Category (adults) | Healthy weight range for this height |
|---|---|---|---|
| 4'10" (147 cm) | 23.6 | Healthy | 89–119 lbs |
| 5'0" (152 cm) | 22.1 | Healthy | 95–128 lbs |
| 5'1" (155 cm) | 21.3 | Healthy | 98–132 lbs |
| 5'2" (157 cm) | 20.7 | Healthy | 101–136 lbs |
| 5'3" (160 cm) | 20.0 | Healthy | 104–141 lbs |
| 5'4" (163 cm) | 19.4 | Healthy | 108–145 lbs |
| 5'5" (165 cm) | 18.8 | Healthy (lower end) | 111–150 lbs |
| 5'6" (168 cm) | 18.2 | Underweight (just below 18.5) | 115–154 lbs |
| 5'7" (170 cm) | 17.7 | Underweight | 118–159 lbs |
| 5'8" (173 cm) | 17.2 | Underweight | 122–164 lbs |
| 5'10" (178 cm) | 16.2 | Underweight | 129–174 lbs |
| 6'0" (183 cm) | 15.3 | Underweight | 136–184 lbs |
“Healthy weight range” is the weight that gives a BMI of 18.5–24.9 at that height. Adult categories (WHO/CDC): underweight below 18.5, healthy 18.5–24.9, overweight 25–29.9, obesity 30 or more.
The exact crossover points for 113 lbs: BMI 18.5 at 65.5 inches (about 5'5½", 166 cm) and BMI 25 at 56.4 inches (about 4'8", 143 cm).
What If I Weigh 113 lbs?
- Under about 5'5": 113 lbs is a healthy BMI. Focus on a balanced diet, regular activity and strength training rather than the number on the scale.
- Around 5'5"–5'6": you are close to the underweight line. This can be perfectly healthy for a slim build, but check that you are eating enough and that your weight is stable.
- 5'7" or taller: 113 lbs is underweight for an adult. Being underweight can be linked to low energy, weaker bones, lower immunity and, in women, missed periods. If you are losing weight without trying, or are trying hard to stay at this weight, talk to a doctor.
113 lbs equals 51.3 kg (see 113 pounds to kg).
Worked Example: 113 lbs at 5'4"
- Height: 5'4" = 64 inches; 64² = 4,096
- 113 × 703 = 79,439
- 79,439 ÷ 4,096 ≈ 19.4
Metric check: 113 lbs = 51.26 kg; 5'4" = 1.626 m; 51.26 ÷ 1.626² ≈ 19.4 – healthy range.
Teens and Children: Adult BMI Ranges Don’t Apply
For anyone under 20, BMI is compared with growth charts for age and sex (BMI-for-age percentiles). Underweight is below the 5th percentile and healthy weight is the 5th to below the 85th percentile. Because teens are still growing, the same BMI can mean different things at 13 and at 17. For example, a 17-year-old girl who is 5'7" and weighs 113 lbs has a BMI of 17.7; whether that is healthy depends on her percentile, so check it with a pediatrician or the CDC’s child and teen BMI calculator rather than the adult table above.
BMI Limitations
- Muscle vs fat: BMI does not distinguish muscle from fat, so muscular people may score higher than their body fat suggests.
- Older adults: muscle loss with age can hide excess fat behind a normal BMI.
- Ethnicity: some health bodies use lower thresholds for people of South Asian and East Asian descent, as health risks appear at a lower BMI.
- Pregnancy: BMI is not used to judge weight during pregnancy.
Waist size, fitness, blood pressure, blood sugar and cholesterol give a fuller picture. See also blood sugar 113 mg/dL and 113 cholesterol level.
Medical Disclaimer: This page is general information only and is not a substitute for medical advice. If you are concerned about your weight, or about eating or weight-control habits, speak to a qualified healthcare professional. See the site disclaimer.
Frequently Asked Questions
Is 113 lbs underweight?
It depends on height. For adults, 113 lbs is underweight (BMI below 18.5) at about 5'6" and taller, and a healthy weight at about 4'9" to 5'5".
What is the BMI of 113 lbs at 5'4"?
At 5'4" (64 inches), 113 lbs gives a BMI of about 19.4, which is in the healthy range of 18.5–24.9.
Is 113 lbs healthy for a 5'7" woman?
For an adult, 113 lbs at 5'7" is a BMI of about 17.7, which is underweight. The healthy BMI range at 5'7" corresponds to about 118–159 lbs. For teenagers, use BMI-for-age percentiles instead of adult ranges.
How many kg is 113 lbs?
113 lbs is about 51.3 kg (113 × 0.4536).