Biology Calculators

Basal Area Calculator

Calculate tree basal area (ft²) from DBH in inches.

Benadryl Dosage for Dogs Calculator

Free online Benadryl Dosage for Dogs Calculator. Quickly calculate and get instant results.

Bird Age Calculator

Free online Bird Age Calculator. Quickly calculate and get instant results.

Cat Age Calculator

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

Cat BMI Calculator

Estimates a cat's BMI using weight (kg) and body length (cm).

Cat Benadryl Dosage Calculator

Free online Cat Benadryl Dosage Calculator. Quickly calculate and get instant results.

Cat Calorie Calculator

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

Cephalexin for Cats Dosage Calculator

Free online Cephalexin for Cats Dosage Calculator. Quickly calculate and get instant results.

Cephalexin for Dogs Dosage Calculator

Free online Cephalexin for Dogs Dosage Calculator. Quickly calculate and get instant results.

Dog Age Calculator

Free online Dog Age Calculator. Quickly calculate and get instant results.

Dog BMI Calculator

Estimate a dog BMI-like index using weight divided by (body length × height at withers).

Dog Calorie Calculator

Free online Dog Calorie Calculator. Quickly calculate and get instant results.

Fish Oil Dosage for Cats Calculator

Free online Fish Oil Dosage for Cats Calculator. Quickly calculate and get instant results.

Guinea Pig Age Calculator

Free online Guinea Pig Age Calculator. Quickly calculate and get instant results.

Hamster Age Calculator

Free online Hamster Age Calculator. Quickly calculate and get instant results.

Metacam Dosage Cat Calculator

Free online Metacam Dosage Cat Calculator. Quickly calculate and get instant results.

Population Growth Calculator

Calculate exponential population growth.

Rabbit Cage Size Calculator

Free online Rabbit Cage Size Calculator. Quickly calculate and get instant results.

Rat Cage Calculator

Free online Rat Cage Calculator. Quickly calculate and get instant results.

Tree Age Calculator

Free online Tree Age Calculator. Quickly calculate and get instant results.

Acres per Hour Calculator

Calculate acres covered per hour from speed, swath width, and field efficiency.

Allele Frequency Calculator

Calculate allele frequencies from genotype counts.

Animal Mortality Rate Calculator

Compute mortality and survival rates from deaths and starting population.

Annealing Temperature Calculator

Estimate PCR annealing temperature from primer Tm values using an offset below the lowest Tm.