BMI calculator

Add a BMI calculator to your website

Height and weight in, body mass index and the standard adult category out, with the healthy weight range for that height. For gyms, clinics, coaches and health blogs.

The sentence to start from

A BMI calculator: height in cm and weight in kg. Show the BMI with one decimal, the adult category (underweight below 18.5, healthy to 24.9, overweight to 29.9, obesity from 30) and the healthy weight range for that height, then a 'Book a free consultation' button with name and email.

BMI calculator

For adults. Enter your height and weight.

Height
175 cm
140 cm210 cm
Weight
72 kg
40 kg160 kg
Your BMI
23.5
Healthy weight from (kg)
56.7
Healthy weight up to (kg)
76.3
Healthy weight

In the healthy range for your height.

BMI is a screening number for adults, not a diagnosis.

Talk it through with a coach

01

The categories people expect

The standard adult bands, with a short message for each, and a note that BMI is a screening number, not a diagnosis.

02

A next step, not a dead end

Offer a consultation or a programme under the result, and get the request with the numbers attached.

03

Metric or imperial

Ask for feet, inches and pounds, or a switch between both.

What's in it

Want something different? Say so, in words, and review the change before it goes live.

  • Height
  • Weight
  • BMI
  • Category with a message
  • Healthy weight range
  • Name and email for a consultation

Questions

Before you ask

Which categories does it use?
The adult categories most health bodies publish: under 18.5 underweight, 18.5 to 24.9 healthy, 25 to 29.9 overweight, 30 and over obesity. You can change the wording of each message.
Is it suitable for children?
No. Children's BMI is read against age and sex charts. The example says it is for adults.
Can I use pounds and inches?
Yes. Describe the units you want and the formula follows.

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