BMI Calculator for Female — Start Now
A BMI calculator for female estimates body mass index using your height and weight so you can see where you fall on standard adult women's BMI categories. It is a fast screening tool for general health context, not a diagnosis.
Quick summary
This BMI calculator for female estimates body mass index from height and weight, then maps the result to standard adult categories. The page includes a BMI chart, formulas for metric and imperial units, examples, FAQs, and references to interpret results beyond a single number.
BMI Calculator for Female
Use this calculator to get your BMI and a healthy weight range for your height. If you are working on body composition or a weight goal, pair it with a TDEE calculator to estimate daily calories.
Calculator
Enter your height and weight to calculate BMI for adult women. The result shows your BMI category plus a healthy weight range for your height.
BMI chart for adult women
BMI categories are the same for adult women and men. The chart below is a quick reference for how your BMI score maps to common ranges.
| BMI range | Category | What it means |
|---|---|---|
| Below 18.5 | Underweight | May indicate low body weight for height. |
| 18.5 to 24.9 | Healthy weight | Typical healthy range for most adults. |
| 25.0 to 29.9 | Overweight | Above the healthy range; consider waist data too. |
| 30.0 to 34.9 | Obesity class I | Higher risk range for chronic conditions. |
| 35.0 to 39.9 | Obesity class II | Higher risk range; talk with your clinician. |
| 40.0+ | Obesity class III | Highest risk range; clinical support advised. |
BMI formula
BMI is calculated by dividing weight by height squared. The metric formula uses kilograms and meters, while the imperial formula uses pounds and inches with a conversion factor.
BMI does not measure body fat directly. Women with higher muscle mass or smaller frames can fall outside the chart while still being healthy, so use it alongside waist measurements and how you feel.
Example calculation
Example: A 5'5" woman who weighs 150 lb has a height of 65 inches (1.65 m) and a weight of 68.0 kg. BMI = 68.0 ÷ (1.65 × 1.65) = 24.9, which is at the upper end of the healthy range.
If the same person reduces weight to 140 lb, BMI becomes about 23.3, still within the healthy category. Use changes like this to set realistic goals rather than chasing a single number.
FAQ
Is BMI different for women?
The BMI cutoffs are the same for adult women and men. What differs is body composition; women tend to carry more essential fat, so BMI should be one of several health indicators.
Does BMI work if I lift weights?
BMI can overestimate body fat in muscular women. If you train regularly, compare BMI with waist size, progress photos, and performance trends.
Is BMI accurate during pregnancy?
Pregnancy changes weight and fluid balance, so BMI is not a reliable metric. Use pregnancy-specific guidance from your healthcare team.
How often should I check BMI?
Monthly or every few weeks is plenty. Combine it with a calorie deficit calculator if you want a structured plan.
Resources
These sources explain BMI categories and how the metric is used for adult health screening.
Evidence-based references: CDC: Adult BMI, WHO: Obesity and overweight, NHLBI: Assessing your weight and health risk.