BMI & BMR Calculator
Assess your health status with our dual BMI (Body Mass Index) and BMR (Basal Metabolic Rate) calculator. Discover your ideal weight range and calculate exactly how many calories you need daily to maintain, lose, or gain weight.
Your Details
Feet to Centimeter Conversion
Category: Normal Weight
Healthy range: 56.7 kg - 76.3 kg
Your Category
Normal Weight
Healthy weight for your height:
56.7 kg - 76.3 kg
Daily Maintenance Calories (TDEE)
1,979 kcal
Calorie Plan for Goals
What is a BMI & BMR Calculator?
A BMI & BMR Calculator is a comprehensive health and fitness tool that helps you understand your body composition and daily calorie needs. It calculates your Body Mass Index (BMI) to determine whether you are underweight, normal weight, overweight, or obese. Along with BMI, it also calculates your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE).
This calculator supports both Metric (cm/kg) and Imperial (ft/lbs) units and provides personalized insights such as your weight category, healthy weight range for your height, and the number of calories you need daily to maintain your current weight.
How Does the BMI & BMR Calculator Work?
The calculator starts by collecting basic personal details such as gender, age, height, and weight. You can enter these values in either metric or imperial units. Based on height and weight, the calculator determines your BMI and classifies it into a standard weight category.
Next, it calculates your BMR using your gender, age, height, and weight. You then select your activity level, which helps the calculator estimate your Total Daily Energy Expenditure (TDEE). The final result shows your BMI category, a healthy weight range for your height, and the daily calories needed to maintain your current weight.
BMI & BMR Formula (With Example)
BMI Formula:
BMI = Weight (kg) ÷ [Height (m)]²
BMR Formula (Mifflin–St Jeor Equation):
For Men: BMR = (10 × weight) + (6.25 × height) − (5 × age) + 5
For Women: BMR = (10 × weight) + (6.25 × height) − (5 × age) − 161
TDEE Formula:
TDEE = BMR × Activity Level Factor
Example:
Gender: Male
Age: 30 years
Height: 175 cm
Weight: 70 kg
Activity Level: Moderate
- BMI = 70 ÷ (1.75 × 1.75) = 22.9 (Normal Weight)
- BMR = (10 × 70) + (6.25 × 175) − (5 × 30) + 5 = 1,664 kcal
- TDEE = 1,664 × 1.55 ≈ 1,979 kcal/day
Healthy weight range for this height would be approximately 56.7 kg – 76.3 kg.
Understanding Your Results
BMI (Body Mass Index) is a screening tool that uses height and weight to estimate body fat. While useful, it doesn't distinguish between muscle and fat. An athlete might have a high BMI but low body fat.
BMR (Basal Metabolic Rate) is the number of calories your body burns at rest just to keep your organs functioning. You should never eat below your BMR without medical supervision.
TDEE (Total Daily Energy Expenditure) is your BMR + Calories burned through activity. This is your "Maintenance Calories". To lose weight, you must eat less than this number.
Use Cases of a BMI & BMR Calculator
- Checking whether your weight falls within a healthy range
- Understanding daily calorie needs for weight maintenance
- Planning weight loss or weight gain goals
- Designing fitness and diet plans
- Monitoring health and lifestyle changes over time
- Supporting personal training and nutrition planning
Benefits of Using a BMI & BMR Calculator
- Provides clear insight into your weight category
- Calculates healthy weight range for your height
- Estimates daily calorie needs based on activity level
- Supports both metric and imperial measurements
- Helps set realistic fitness and nutrition goals
- Easy-to-use and suitable for all age groups
A BMI & BMR Calculator is an essential tool for anyone looking to improve their health, manage weight effectively, and make informed decisions about diet and physical activity.
Frequently Asked Questions
Find clear answers to common questions about this converter, accuracy, usage, and real-world applications.
What is a BMI & BMR Calculator?
A BMI & BMR Calculator helps you understand your body weight status and daily calorie needs by calculating Body Mass Index (BMI), Basal Metabolic Rate (BMR), and Total Daily Energy Expenditure (TDEE).
What does BMI tell me about my health?
BMI indicates whether your weight is underweight, normal, overweight, or obese based on your height and weight. It is a general screening tool, not a medical diagnosis.
What is BMR and why is it important?
BMR represents the number of calories your body needs at rest to maintain essential functions like breathing, circulation, and temperature regulation.
What is TDEE shown in the results?
Total Daily Energy Expenditure (TDEE) is the total number of calories you burn in a day based on your activity level. It helps estimate daily maintenance calories.
How is the healthy weight range calculated?
The healthy weight range is calculated using standard BMI values considered normal (18.5–24.9) for your height and converting them into weight ranges.
Can I use this calculator with imperial units?
Yes, the calculator supports both Metric (cm/kg) and Imperial (ft/lbs) units, allowing flexible and accurate input.
Does activity level affect calorie results?
Yes, selecting an activity level adjusts your BMR to calculate TDEE, giving a more realistic estimate of calories burned throughout the day.
Is this calculator suitable for weight loss planning?
Yes, knowing your maintenance calories helps you plan calorie deficits or surpluses for weight loss or weight gain in a structured way.
Is BMI accurate for everyone?
BMI is a general indicator and may not be accurate for athletes, pregnant women, or the elderly. It does not account for muscle mass or bone density.
How much of a calorie deficit is safe?
A deficit of 500 calories per day typically results in 0.5 kg (1 lb) weight loss per week. This is considered safe and sustainable. Extreme deficits (>1000 kcal) can harm metabolism.
What formula is used for BMR?
We use the Mifflin-St Jeor Equation, which is currently considered the most accurate formula for estimating calorie needs in clinical settings.