Biology Tools

Calculate and explore basic biology values. Choose a tool, enter values, and get results with formulas. Educational tool for understanding biological calculations.
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Calculates body mass index from weight and height
Separate values with commas. Example: weight=70,height=1.75
Quick Guide
For BMI: Enter weight in kg, height in meters (e.g., weight=70,height=1.75)
Quick Examples:
📚 Biology Facts & Formulas
BMI Formula
BMI = weight(kg) ÷ height(m)²
Categories: Underweight (<18.5), Normal (18.5-25), Overweight (25-30), Obese (>30)
Heart Rate Zones
Max HR = 220 - age
Target zone = Max HR × intensity%
Light: 50-60%, Moderate: 60-70%, Hard: 70-85%
Population Growth
Exponential: P = P₀ × (1 + r)^t
Logistic: P = K ÷ (1 + (K-P₀)/P₀ × e^(-rt))
r = growth rate, K = carrying capacity
Dilution Formula
C₁V₁ = C₂V₂
Where C = concentration, V = volume
Used in labs for preparing solutions