Pool & Hot Tub Calculator

Calculate your water volume and chemical dosages

Pro Tip: Test before you swim, dose after you're done. Always use test strips!

What are you treating?

Enter Dimensions

Your Water Volume

Calculated Volume

0 Cubic Metres
0 Litres
0 UK Gallons
0 US Gallons

Enter Water Test Results

Pool: 1-3 ppm | Hot Tub: 3-5 ppm

Ideal: 7.2-7.6

Ideal: 80-150 ppm

Chemical Dosage Results

Water Quality Status

Important Safety Information

  • Always follow manufacturer's instructions
  • Never mix chemicals together
  • Add chemicals to water, not water to chemicals
  • Wait 20+ minutes between different chemicals
  • Re-test after 24 hours and adjust as needed