Biology Calculators

Bacteria Growth Calculator

Free online Bacteria Growth Calculator. Quickly calculate and get instant results.

Blood Type Inheritance

Predict possible blood types of offspring.

Bulb Spacing Calculator

Compute bulb spacing from bulb diameter and estimate how many bulbs fit along a bed length.

CO2 Grow Room Calculator

Estimate CO2 mass needed to raise a grow room from current to target ppm using ideal gas law.

Cat Chocolate Toxicity Calculator

Computes total theobromine and mg/kg dose based on cat weight, amount eaten, and chocolate potency.

Cat Pregnancy Calculator

Free online Cat Pregnancy Calculator. Quickly calculate and get instant results.

Cat Quality of Life Calculator

Sums 7 quality-of-life domains (0–10 each) and reports total, average, and percent of maximum.

Catculator Calculator

Estimates daily grams of cat food needed after accounting for treat calories and food energy density

Cattle per Acre Calculator

Estimates supported cattle numbers and stocking rate from forage supply, utilization, intake, and gr

Cell Density Calculator

Calculate cell concentration.

Cell Dilution Calculator

Free online Cell Dilution Calculator. Quickly calculate and get instant results.

Cell Division Calculator

Calculate cells after mitotic divisions.

Cell Doubling Time Calculator

Free online Cell Doubling Time Calculator. Quickly calculate and get instant results.

Corn Yield Calculator

Estimate corn yield (bu/acre) from ear counts and kernel counts using kernels-per-bushel adjustment.

Cow Gestation Calculator

Free online Cow Gestation Calculator. Quickly calculate and get instant results.

Cricket Chirp Thermometer Calculator

Estimate air temperature from cricket chirps using Dolbear’s law (based on chirps per second).

DNA Base Pair Calculator

Calculate DNA properties from sequence length.

DNA Concentration Calculator

Estimate DNA concentration from A260, dilution factor, and DNA type (dsDNA/ssDNA/oligo).

DNA Copy Number Calculator

Compute DNA copy number from concentration (ng/µL), fragment length (bp), and volume using 660 g/mo

DNA to MRNA Calculator

Convert DNA length to mRNA coding length and estimated protein amino-acid length (triplet codons; op

Daily Light Integral DLI Calculator

Convert PPFD and photoperiod into Daily Light Integral (mol/m²/day).

Dihybrid Cross Punnett Square Calculator

Dihybrid Punnett squares require discrete genotype mapping; use a logic/table-based engine rather th

Dilution Factor Calculator

Calculate the dilution factor.

Dog Chocolate Toxicity Calculator

Estimate theobromine dose (mg/kg) from chocolate type and amount to gauge potential toxicity risk in