🌿 Ecology & Evolution Calculators
Populations, growth models, diversity indices and enzymes. Browse 26 free ecology & evolution calculators, each with the formula, a worked example and an interactive chart.
Exponential Population Growth CalculatorPredict population size under exponential growth.Logistic Population Growth CalculatorModel population growth limited by carrying capacity.Population Density CalculatorCompute the density of a population in an area.Mark–Recapture Population EstimatorEstimate population size with the Lincoln–Petersen method.Population Change Rate CalculatorCompute net growth from births, deaths and migration.Simpson's Diversity Index CalculatorMeasure biodiversity of a community.Shannon Diversity Index CalculatorCompute the Shannon index and evenness of a community.Species–Area Relationship CalculatorPredict species richness from habitat area.Carrying Capacity from Resources CalculatorEstimate how many animals an area can feed.Ecological Efficiency (10% Rule) CalculatorFind energy at each trophic level.Lotka–Volterra Predator–Prey Equilibrium CalculatorFind equilibrium populations in the Lotka–Volterra model.Selection Allele Frequency Change CalculatorCompute allele frequency after one generation of selection against recessives.Genetic Drift Variance CalculatorEstimate the random change in allele frequency per generation.Inbreeding Coefficient CalculatorFind the inbreeding coefficient from relatedness.Expected Heterozygosity CalculatorCompute expected heterozygosity for multiple alleles.Michaelis–Menten Enzyme Kinetics CalculatorFind reaction velocity at a substrate concentration.Lineweaver–Burk Plot CalculatorFind Vmax and Km from a double reciprocal line.Competitive Inhibition CalculatorFind the apparent Km with a competitive inhibitor.Q10 Temperature Coefficient CalculatorFind how a biological rate changes with temperature.Photosynthesis Glucose and Oxygen Yield CalculatorCompute glucose and oxygen from CO₂ fixed.Cellular Respiration ATP Yield CalculatorEstimate ATP produced from glucose.Respiratory Quotient CalculatorFind the respiratory quotient from CO₂ and O₂ exchange.Allometric Scaling (Kleiber's Law) CalculatorEstimate metabolic rate from body mass.Cell Surface Area to Volume Ratio CalculatorCompute surface area to volume for a spherical or cubic cell.Leaf Area Index CalculatorCompute leaf area index of a canopy.Transpiration Rate CalculatorCompute water loss per leaf area over time.
More calculator categories
🚀 Mechanics & Motion🔥 Thermodynamics & Fluids⚡ Electricity & Magnetism🌈 Waves, Sound & Optics🪐 Modern Physics & Astronomy⚗️ General Chemistry🧪 Solutions, Acids & Kinetics🧬 Genetics & Molecular Biology🫀 Human Body & Health∑ Algebra & Calculus📐 Geometry & Trigonometry📊 Statistics & Probability🌍 Earth & Environmental Science