BMI Calculator Funnel

What is the BMI Calculator?

The BMI (Body Mass Index) Calculator is a quick assessment tool that helps your audience understand where they fall on the weight scale. It instantly calculates their BMI, shows their health category, and provides personalized recommendations.

Why it works: BMI is one of the most recognized health metrics. People want to know their number and what it means for their health.

Perfect for:

• Personal trainers and fitness coaches

• Nutritionists and dietitians

• Weight loss coaches

• Health and wellness bloggers

• Gym owners

What Your Leads Experience

The BMI Calculator is a single-screen form with instant results.

The Form

Your lead enters their measurements:

• Unit preference — Toggle between Metric (kg/cm) or Imperial (lbs/ft)

• Weight — In kilograms or pounds

• Height — Single field for metric, or feet + inches for imperial

• Age — Optional (18-100)

• Gender — Optional (Male/Female)

The Results

After clicking "Calculate My BMI", your lead sees:

Main BMI Display

• Their BMI number prominently displayed

• Category badge (Underweight, Normal, Overweight, or Obese)

Visual BMI Scale

• Color gradient bar from green to red

• Position marker showing where they fall on the scale

Category Description

• Personalized message based on their category

• Health context and what their BMI means

Healthy Weight Range

• Shows the healthy weight range for their height

• If overweight/obese: "You would need to lose X to reach the healthy range"

• If underweight: "You would need to gain X to reach the healthy range"

Recommendations

• 3 personalized tips based on their category

The Science Behind It

BMI Formula

BMI = weight (kg) / height (m)²

For imperial users, we convert behind the scenes before calculating.

BMI Categories

Healthy Weight Range

We calculate the healthy weight range using:

• Minimum healthy weight = 18.5 × height²

• Maximum healthy weight = 24.9 × height²

This shows your lead exactly what weight range is considered healthy for their height.

Tips Provided by Category

Underweight

1. Focus on nutrient-dense foods to gain weight healthily

2. Include protein-rich foods at every meal

3. Consider consulting a dietitian for personalized advice

Normal Weight

1. Maintain your healthy habits with regular exercise

2. Continue eating a balanced diet with plenty of vegetables

3. Stay consistent with portion sizes

Overweight

1. Aim for a modest calorie deficit of 500 calories/day

2. Increase physical activity to at least 150 minutes/week

3. Focus on whole foods and reduce processed food intake

Obese

1. Consult with a healthcare provider for personalized guidance

2. Start with small, sustainable changes to diet and activity

3. Consider working with a registered dietitian

Collecting Leads

After seeing their results, your lead can submit their contact information to save their results.

Contact Form Fields

What You Get (Lead Data)

For every lead, you capture:

Contact Information

• First name, last name, email, phone (based on your settings)

Full BMI Results

• BMI value

• Category (Underweight/Normal/Overweight/Obese)

• Healthy weight range for their height

• Weight difference to healthy range

• Display weight and height in their preferred units

• Age and gender (if provided)

Tips for Success

1. Pair with a Follow-Up Offer

BMI is just a starting point. Use it to introduce your weight management program, nutrition coaching, or fitness services.

2. Send Results via Email

Set up an automatic email with the {{Results}} placeholder so leads get their BMI, category, and tips in their inbox.

3. Address the Limitations

BMI doesn't account for muscle mass or body composition. Consider mentioning this in your follow-up to position your deeper assessments.

4. Use the Data in Outreach

When you contact leads, you know their BMI category. Someone in the "Overweight" category needs different messaging than someone "Normal" looking to stay healthy.

Important Notes

BMI is a screening tool, not a diagnostic measure. It:

• Does not account for muscle mass

• Does not account for bone density or body composition

• May classify muscular athletes as overweight

• Should be used alongside other health assessments

Quick Reference

Have questions? Reach out to our support team!