BMI For Adults Calculator

Work out bmi for adults instantly with clear inputs, formula shown and shareable results.

About BMI For Adults Calculator

BMI is weight in kilograms divided by height in metres squared. At 70 kg and 1.75 m it is 22.86, comfortably inside the 18.5-24.9 healthy band, which for that height spans 56.7 to 76.3 kg. BMI says nothing about how much of the weight is muscle, so heavily muscled people are routinely misclassified as overweight.

Formulas

Body mass index

BMI = weight(kg) / height(m)^2

Healthy range

18.5 to 24.9 kg/m2 for adults

Worked example

With the default values below, BMI For Adults Calculator returns Body Mass Index of 22.86. Change any input above and every figure here is recalculated in your browser.

Inputs used

Body weightminimum 1 kg: 70 kg
Heightminimum 50 cm: 175 cm

Results

Body Mass Index: 22.86 kg/m2
WHO Category: Healthy weight
Bottom Of The Healthy Weight Range: 56.7 kg
Top Of The Healthy Weight Range: 76.3 kg

Step by step

1Values used
2Body mass index
3Healthy range
4Body Mass Index= 22.86 kg/m2
5WHO Category= Healthy weight
6Bottom Of The Healthy Weight Range= 56.7 kg
7Top Of The Healthy Weight Range= 76.3 kg

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
These figures are population-average estimates, not a medical assessment or diagnosis. Body composition equations carry errors of several percentage points, and healthy ranges vary with age, ethnicity, muscularity and medical history. Discuss weight or body composition goals with a qualified clinician or dietitian.
This is an estimate for general information and not professional medical advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

These figures are population-average estimates, not a medical assessment or diagnosis. Body composition equations carry errors of several percentage points, and healthy ranges vary with age, ethnicity, muscularity and medical history. Discuss weight or body composition goals with a qualified clinician or dietitian.

Frequently Asked Questions

What is the BMI of a 70 kg person at 1.75 m?

22.86 kg/m2, which sits in the middle of the healthy weight range.

Why is BMI criticised?

It cannot distinguish muscle from fat or show where fat is stored. Waist measurement and body fat percentage add the information BMI misses.