Pool & Spa Calculators
Take the guesswork out of pool care with our easy-to-use pool calculators. Whether you’re adjusting chlorine, pH, alkalinity, stabiliser, calcium, or salt levels, our tools give you the exact amounts you need to keep your water clear, safe, and balanced. Just enter your pool size and current readings — we’ll handle the math. Perfect for beginners and pros alike!
Can your calculators tell me exactly how much chemical to add?
Yes! Just enter your current test results and pool size. Our calculators will give you the exact amount of each chemical needed to balance your water safely.
Why is it important to know my pool volume?
Knowing your pool’s volume helps you add the right amount of chemicals. Too much or too little can make the water unsafe or damage your pool.
How often should I test my pool water?
It’s best to test your pool water at least 2–3 times a week, or more often during heavy use, hot weather, or after rain.
Are the calculators safe to use for all pool types?
Yes! Our calculators are designed for all pool types: in-ground, above-ground, saltwater, chlorine, fiberglass, vinyl, or plaster.
Do I need to sign up or download anything?
Nope! All our calculators are free and available right here on the website — no login, no downloads required.
Why do I need to balance all these chemical levels?
Balanced water protects swimmers, equipment, and your pool surface. It prevents eye/skin irritation, corrosion, scaling, and cloudy water.
I can't keep up with the maintenance of my pool, can you help me?
Absolutely! Please call us or fill out our contact form and let us know what we can help you with.