Biology & Life Science

48 calculators

Biology & Life Science

Transparent biology, population-genetics, laboratory, and agriculture calculations.

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48 available

Hardy-Weinberg Equilibrium Calculator

Calculate expected genotype frequencies from allele frequency p under the Hardy-Weinberg model.

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Log Reduction Calculator

Calculate base-10 log reduction and percent reduction from initial and final quantities.

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Mutation Frequency Calculator

Calculate mutation frequency from observed mutations and total observations.

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qPCR Efficiency Calculator

Calculate amplification efficiency from a standard-curve slope using the standard qPCR model.

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Daily Light Integral (DLI) Calculator

Calculate DLI from measured PPFD and photoperiod hours.

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DNA Concentration Calculator

Calculate concentration from DNA mass and solution volume.

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DNA Copy Number Calculator

Estimate dsDNA molecule copies from mass and base-pair length.

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Dry Matter Calculator

Calculate dry-matter and moisture percentages from measured masses.

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Feed Conversion Ratio Calculator

Calculate feed conversion ratio from feed consumed and live-weight gain.

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Fertilizer Calculator

Calculate required product mass from area, application rate, and waste.

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Growing Degree Units Calculator

Calculate daily and accumulated growing degree units using a base temperature.

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Grain Bin Calculator

Calculate geometric bin volume and optional mass from bulk density.

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Grass Seed Calculator

Calculate seed mass from area, explicit seeding rate, and waste.

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Vapor Pressure Deficit Calculator

Calculate saturation vapor pressure and vapor pressure deficit from temperature and relative humidity.

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Tree Diameter Calculator

Calculate tree diameter using explicit user inputs and documented assumptions.

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Tree Height Calculator

Calculate tree height using explicit user inputs and documented assumptions.

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Plant Population Calculator

Calculate plant population using explicit user inputs and documented assumptions.

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Vegetable Seed Calculator

Calculate vegetable seed using explicit user inputs and documented assumptions.

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Sod Calculator

Calculate sod using explicit user inputs and documented assumptions.

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DNA to mRNA Converter

Transcribe an explicitly selected coding or template DNA sequence to mRNA.

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Water Potential Calculator

Sum explicit solute, pressure, and gravitational water-potential terms.

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Cricket Chirp Thermometer

Estimate temperature from chirps using explicit Dolbear coefficients.

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Bulb Spacing Calculator

Calculate plant count from area and explicit bulb spacing.

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Tree Age Calculator

Estimate tree age from measured diameter and explicit growth inputs.

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Tree Value Calculator

Estimate trunk value from dimensions and user-entered material factors.

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Livestock Fence Calculator

Calculate fence run, posts, and wire from explicit enclosure geometry.

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Water-Soluble Fertilizer Calculator

Calculate product mass from area, nutrient rate, and product fraction.

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Wastewater Load Calculator

Calculate measured wastewater loads and removal percentage.

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Pet Sitter Rates Calculator

Calculate pet-sitting hours and cost from explicit rates and visits.

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Cost of Owning a Dog Calculator

Sum explicit one-time, monthly, and annual costs over a selected horizon.

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Horse Weight Calculator

Evaluate a user-supplied allometric model from girth and length.

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Tree Leaves Calculator

Calculate total leaf area and leaf area index from measured inputs.

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Protein Concentration Calculator

Calculate concentration from measured protein mass and sample volume.

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Protein Molecular Weight Calculator

Calculate sequence residue mass with an explicit terminal or modification adjustment.

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Dihybrid Cross Calculator

Enumerate two-locus offspring genotype probabilities from explicit parent genotypes.

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Trihybrid Cross Calculator

Enumerate three-locus offspring genotype probabilities from explicit parent genotypes.

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Vegetable Yield Calculator

Estimate potential and marketable crop yield from area, an entered yield rate, and harvest efficiency.

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MLVSS Calculator

Calculate mixed liquor volatile suspended solids from measured TSS concentration and an entered volatile fraction.

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Cattle per Acre Calculator

Calculate theoretical head capacity from acreage and an explicitly entered stocking rate.

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CO₂ Grow Room Calculator

Estimate one-time CO₂ mass from room volume, ambient and target ppm, and entered gas density.

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Compost Ratio Calculator

Compare measured brown and green material masses with an explicitly entered target ratio.

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Grain Conversion Calculator

Convert measured as-fed grain mass to dry-matter mass and volume using explicit moisture and bulk-density inputs.

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Cow Gestation Date Calculator

Project a date by adding an explicitly entered gestation duration to a breeding date.

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Animal Body Mass Index Calculator

Estimates a body condition score for animals based on weight and length, similar to human BMI but adjusted for animal body shapes.

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Species-Area Relationship Calculator

Estimates the number of species expected in a habitat of a given area using the power-law species-area relationship S = c * A^z.

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Ecological Footprint Calculator

Estimates your personal ecological footprint in global hectares based on your diet, transportation, energy use, and consumption habits.

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Intrinsic Rate of Increase Calculator

Calculates the intrinsic rate of natural increase (r) for a population using birth and death rates, and estimates population doubling time.

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Generation Time Calculator

Calculates the generation time (doubling time) of a microbial population based on initial and final cell counts and the elapsed time.

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