On this page
Understanding Aquarium Tank Sizing and Equipment
Formula
Aquarium volume is calculated by multiplying length x width x height (in inches) and dividing by 231 to convert cubic inches to US gallons. This is essential for determining fish capacity, heater wattage, and filter flow rate.
A general rule is 5 watts of heater per gallon of water, and a filter that processes 4-6 times the tank volume per hour. Larger tanks are actually easier to maintain since water parameters change more slowly.
Common use cases:
- Setting up a new aquarium
- Equipment sizing and selection
- Estimating water weight for floor support
Frequently Asked Questions
Was this calculator helpful?
People Also Use
Dog Age Calculator
Convert your dog's age to human years based on breed size with updated veterinary age-equivalent formulas.
Cat Age Calculator
Convert your cat's age to human years using the veterinary-approved feline aging formula.
Dog Food Calculator
Calculate your dog's daily calorie needs and food portions based on weight, age, and activity level.
Due Date Calculator
Estimate your pregnancy due date, current gestational week, and trimester using Naegele's rule from your last period.
Ovulation Calculator
Estimate your ovulation date and fertile window based on your cycle length and last menstrual period date.
Baby Growth Percentile
Estimate your baby's weight and height percentiles based on age and sex using WHO growth chart standards.
Conception Date
Estimate the date of conception from a due date or birth date by subtracting the standard 266-day gestation period.
Dog Walking Guide
Calculate recommended daily walks, minutes per walk, and weekly mileage based on your dog's breed size and age.