Biology Calculators

Dog Crate Size Calculator

Estimates minimum dog crate length and height from body length and shoulder height with user-set all

Dog Food Calculator

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

Dog Harness Size Calculator

Computes recommended harness neck and chest-girth settings by adding a user-defined comfort allowanc

Dog Heat Cycle Calculator

Estimates key heat-cycle timing (fertile window and ovulation) from the first day of bleeding using

Dog Life Expectancy Calculator

Estimates remaining years and percent of expected lifespan completed from current age and an expecte

Dog Metacam Calculator

Calculates meloxicam (Metacam) dose in mg and mL from dog weight, mg/kg dose, and product concentrat

Dog Onion Toxicity Calculator

Estimates onion dose (mg/kg and g/kg) and percent of a 5 g/kg reference level based on dog weight.

Dog Pregnancy Calculator

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

Dog Quality of Life Calculator

Sums 7 common 0–10 quality-of-life ratings (HHHHHMM-style) and reports total, average, and percent

Dog Raisin Toxicity Calculator

Estimates raisin dose (mg/kg and g/kg) and percent of a 10 g/kg reference level from dog weight.

Dog Size Calculator

Computes a BMI-like index, an approximate weight estimate from girth/length, and body surface area f

Dog Water Intake Calculator

Estimates typical daily water needs as a range (44–66 mL/kg/day), reported in mL/day and L/day.

Doubling Time Calculator

Calculate how long it takes for a population to double.

Dry Matter Calculator

Compute dry matter and water weight from as-fed weight and dry matter percent.

Enzyme Kinetics Calculator

Calculate enzyme kinetics (Michaelis-Menten).

FCR Calculator

Calculate feed conversion ratio (FCR) and feed efficiency from feed intake and weight gain.

Fertilizer Calculator

Compute fertilizer product needed from area, target nutrient rate, and fertilizer grade percent.

GDU Calculator

Calculate daily growing degree units (GDU) from max/min temperature and a base temperature.

Generation Time Calculator

Calculate bacterial generation time.

Goat Gestation Calculator

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

Grain Bin Calculator

Estimate grain bin volume and grain mass from bin diameter, fill height, and bulk density.

Grain Conversion Calculator

Convert grains (gr) to mg, g, kg, oz, lb, and troy ounces using standard mass conversion factors.

Grass Seed Calculator

Estimate grass seed required from area, seeding rate (lb/1000 sq ft), and an optional extra percenta

Guinea Pig Pregnancy Calculator

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