All Pool Calculators 2026

Pool Calculators

Use these pool calculators to get quick answers about heater size, heat pump size, heat loss, and heating cost. These tools are made for U.S. pool owners who want simple results without guessing. Whether you have an above ground pool or an inground pool, these calculators can help you choose the right setup and save energy.

Start with the calculator that matches your goal. If you need help choosing a heater, checking heat loss, or estimating monthly cost, the tools below will guide you step by step.

Choose the Right Calculator

Pool Heater Size Calculator helps you find the right heater size for your pool based on pool volume, temperature goals, and climate.

Heat Pump Sizing Calculator helps you estimate the best heat pump size for faster and more efficient pool heating.

Pool Heat Loss Calculator shows how much heat your pool loses and what affects that loss, such as wind, cover use, and air temperature.

Pool Heating Cost Calculator helps you estimate monthly and yearly heating cost so you can compare options before you buy.

Available Calculators

Pool Heater Size Calculator

Find the right heater size for your swimming pool. This calculator is useful if you want to know how many BTUs your pool needs based on pool shape, size, depth, and desired water temperature.

Heat Pump Sizing Calculator

Estimate the right heat pump size for your pool. This tool is helpful if you want a more energy-efficient way to heat your pool and need a clear BTU recommendation for your setup.

Pool Heat Loss Calculator

Learn how much heat your pool is losing each day or night. Heat loss depends on pool cover use, wind, air temperature, sun exposure, and water temperature. This calculator helps you understand why some pools cost more to heat than others.

Pool Heating Cost Calculator

Estimate how much it costs to heat your pool each month and each year. This calculator is useful if you want to compare heat pump cost, gas heater cost, and possible savings over time.

Why These Calculators Matter

Pool heating is not one-size-fits-all. A small above ground pool needs a different heater than a large inground pool. Climate also matters. A pool in Florida will have very different heating needs than a pool in New York or Michigan.

These calculators help you make a smarter choice before you spend money on a heater or heat pump. Instead of guessing, you can use real pool data to get a better estimate.

What You Can Learn

How big your pool heater should be

How much BTU output your pool needs

How much heat your pool loses

How much it may cost to run a pool heater

How a pool cover can lower energy use

Whether a heat pump or gas heater makes more sense

How to Use This Calculator Hub

First, choose the calculator that matches your goal. Then enter your pool size, depth, temperature target, and other details. After that, review the results and compare your options.

If you are not sure where to begin, start with the pool heater size calculator. That gives you a strong base for choosing the right heater or heat pump.

Common Questions Pool Owners Ask

What size heater do I need for my pool?

That depends on pool size, shape, depth, location, and how fast you want the pool to warm up. A heater that is too small will run longer and may not perform well in cold weather.

Is a heat pump better than a gas heater?

A heat pump is often more efficient and cheaper to run in many situations. A gas heater may heat faster, but it can cost more to operate. The right choice depends on your pool, climate, and budget.

Does a pool cover really help?

Yes. A pool cover can reduce heat loss and lower your heating cost. It is one of the simplest ways to save energy and keep water warmer for longer.

Why does pool heat loss matter?

Heat loss affects how hard your heater must work. If your pool loses heat fast, your heating cost will go up. Wind, cool nights, and no pool cover can all increase heat loss.

Best Way to Find the Right Pool Heating Setup

Use the calculators together for the best results. Start with pool size, then check heat loss, then estimate heating cost. This gives you a full picture before you choose a heater or heat pump.

For the best experience, use the calculator that matches your main question. That will save time and help you get a more accurate result.

FAQs

Which calculator should I use first?

If you are not sure, start with the pool heater size calculator. It gives you the base heating size before you compare costs or heat loss.

Can I use these calculators for an above ground pool?

Yes. These calculators are designed for U.S. pool owners and work for both above ground and inground pools.

Can I compare heating cost between heat pumps and gas heaters?

Yes. The pool heating cost calculator can help you estimate cost and compare different heating options.

Do I need to know my pool volume?

Not always. Some calculators can estimate pool volume from pool length, width, depth, and shape.

Are these calculators made for U.S. users?

Yes. They use U.S. units like feet, gallons, Fahrenheit, and U.S. dollars.