Health Calculators

Empowering better lifestyle decisions through science.
Estimate your health metrics — metabolism, protein needs, oxygen, and more.
For education only — not a substitute for medical advice.

Metric (kg / cm)

Calculator Information & Formulas

Disclaimer: Educational use only — values are estimates for learning purposes.

🟣 Body Mass Index (BMI)

Estimates body fat based on height and weight.
BMI = weight (kg) / [height (m)]² Adjusted slightly by ethnicity and sex for accuracy.

🔥 Basal Metabolic Rate (BMR) & TDEE

BMR is your resting energy burn. TDEE adds activity.
BMR = 10×W + 6.25×H – 5×Age + (5 ♂ / −161 ♀) TDEE = BMR × Activity (1.2–1.9) Useful for meal planning or calorie tracking.

🍗 Protein Needs

Protein supports muscle and repair; based on lean body mass and training.
Protein = LBM × 0.8–2.2 g/kg Sedentary = 0.8 g/kg, active = 1.6 g/kg+, athletes = 2.0 g/kg+

❤️ Resting Heart Rate & O₂ Saturation

Reflects cardiovascular and respiratory health.
Resting HR: 50–70 bpm (fit), 70–90 bpm (average).
O₂ Saturation: 95–100 % normal. Values below 90 % may indicate hypoxia.

🧪 Cholesterol Profile

Key lipid measures for cardiovascular risk.
Total = LDL + HDL + (Triglycerides ÷ 5) (mg/dL)
VLDL ≈ Triglycerides ÷ 5 (mg/dL) or ÷ 2.2 for mmol/L Lower LDL & triglycerides, higher HDL → better outcomes.

Body Mass Index (BMI)

Weight (kg):

Height (cm):

Sex:

Ethnicity:

Activity Level:

Basal Metabolic Rate (BMR) & Total Daily Energy Expenditure (TDEE)

Weight (kg):

Height (cm):

Age:

Sex:

Activity Level:

Daily Protein Needs

Weight (kg):

Activity Level:

Goal:

Resting Heart Rate & Oxygen Saturation

Resting Heart Rate (bpm):

O₂ Saturation (%):

Reference Chart

RHR: 50–70 bpm (fit), 70–90 (average)
O₂ Sat: 95–100% (healthy), 90–94% (monitor), below 90% (seek care)

Cholesterol Tools

Value:

Unit:

Total Cholesterol Calculator

LDL:

HDL:

Triglycerides:

Unit:

Healthy Ranges

Total: Below 5.0 mmol/L
LDL: Below 3.0 mmol/L
HDL: Above 1.0 mmol/L (men), 1.2 (women)
Triglycerides: Below 1.7 mmol/L