Formiq: BMI & BMR Calculator

Aziz Dev

About this app

Understand your body with Formiq. Calculate your BMI, explore a reference weight and estimate your resting energy needs—all in a clear, thoughtfully designed app.

Enter your details once and explore three calculators:

Body Mass Index — BMI
See your BMI, adult weight category and BMI-based weight range with an easy-to-read visual gauge.

Ideal Body Weight — IBW
Explore a reference weight estimated using the Devine formula. Understand what the number means and why it is an estimate rather than a personal weight goal.

Basal Metabolic Rate — BMR
Estimate the energy your body uses at rest with the Mifflin–St Jeor equation. Results are shown in kcal per day, with clear explanations of how resting energy differs from daily calorie needs.

Made for everyday simplicity
• Switch between metric and imperial measurements.
• Adjust your details with sliders or enter values directly.
• Keep your last-entered details saved on your device.
• Choose light mode, dark mode or your device’s appearance setting.
• Explore calculation methods and open supporting source references.
• Copy your results for your own reference.
• Get started without creating an account.

Formiq is designed for adults aged 18 and older. BMI is a screening measure, not a diagnosis. IBW and BMR results are formula-based estimates, not personalised weight or calorie targets. Individual health and body composition matter when interpreting results.