Calorie Calculator

About the Calorie Calculator

The Calorie Calculator estimates your daily calorie needs using the Mifflin-St Jeor Equation for Basal Metabolic Rate (BMR) and adjusts for activity level and goals.

Calorie Calculation: Combines BMR, activity multiplier, and goal adjustments to provide personalized calorie recommendations.

Use this calculator to plan your diet for maintenance, weight loss, or weight gain.

• Features:
  • Calculates daily calorie needs based on:
    • Age (\( a \), years)
    • Sex (male/female)
    • Height (\( h \), cm or ft/in)
    • Weight (\( w \), kg or lbs)
    • Activity level (sedentary to extremely active)
    • Goal (maintenance, weight loss, weight gain)
  • Supports Metric (cm, kg) and Imperial (ft/in, lbs) units.
  • Uses Mifflin-St Jeor Equation for BMR.
  • Keypad includes digits (0–9) and decimal point.
  • Displays calculations in LaTeX format.
  • Clear, backspace, and copy functionality for results.
  • Uses MathJax for professional rendering of mathematical expressions.
• Practical Applications: Useful for dietary planning, weight management, and fitness goals.
• How to Use:
  • Select unit system (Metric or Imperial).
  • Enter age (\( a \), in years).
  • Select sex (male or female).
  • Enter height (\( h \), in cm or ft/in).
  • Enter weight (\( w \), in kg or lbs).
  • Select activity level.
  • Select goal.
  • Use the keypad to input numbers.
  • Click "Calculate" to view your calorie needs.
  • Use "Clear" to reset or "⌫" to delete the last character.
  • Use "Copy Results" to copy the results.
  • Share or embed the calculator using the action buttons.
• Helpful Tips:
  • All numerical inputs must be positive.
  • Weight loss/gain adjustments assume a 500 kcal deficit/surplus for ~0.5 kg/week change.
  • Consult a dietitian or doctor for personalized advice, especially for significant weight changes.
• Formulas:
  • BMR (Mifflin-St Jeor):
    • Male: \\( 10w + 6.25h - 5a + 5 \\)
    • Female: \\( 10w + 6.25h - 5a - 161 \\)
  • TDEE: \\( \text{BMR} \times \text{Activity Multiplier} \\)
  • Goal Adjustments:
    • Weight Loss: \\( \text{TDEE} - 500 \\) kcal
    • Weight Gain: \\( \text{TDEE} + 500 \\) kcal
• Activity Multipliers:
  • Sedentary: 1.2
  • Lightly Active: 1.375
  • Moderately Active: 1.55
  • Very Active: 1.725
  • Extremely Active: 1.9
• Examples:
  • Example 1: Male, 30 years, 175 cm, 80 kg, Moderately Active, Weight Loss:
    • Inputs: Age = 30 years, Sex = Male, Height = 175 cm, Weight = 80 kg, Activity = Moderately Active, Goal = Weight Loss
    • Steps:
      • BMR: \\( 10 \times 80 + 6.25 \times 175 - 5 \times 30 + 5 = 800 + 1093.75 - 150 + 5 = 1748.75 \\) kcal
      • TDEE: \\( 1748.75 \times 1.55 = 2710.56 \\) kcal
      • Weight Loss: \\( 2710.56 - 500 = 2210.56 \\) kcal
    • Result: Daily Calories = 2210.6 kcal
  • Example 2: Female, 25 years, 5 ft 4 in, 130 lbs, Sedentary, Maintenance:
    • Inputs: Age = 25 years, Sex = Female, Height = 5 ft 4 in, Weight = 130 lbs, Activity = Sedentary, Goal = Maintenance
    • Steps:
      • Convert: Weight = \\( 130 \times 0.453592 = 58.97 \\) kg
      • Height: \\( (5 \times 12 + 4) \times 2.54 = 64 \times 2.54 = 162.56 \\) cm
      • BMR: \\( 10 \times 58.97 + 6.25 \times 162.56 - 5 \times 25 - 161 = 589.7 + 1016 - 125 - 161 = 1319.7 \\) kcal
      • TDEE: \\( 1319.7 \times 1.2 = 1583.64 \\) kcal
    • Result: Daily Calories = 1583.6 kcal

Plan your calorie intake with this interactive calculator. Share or embed it on your site!