Ozone Calculator

Welcome to our interactive calculators page! Below you will find multiple calculators, with information on each in their respective dropdowns.

Our team can assist with any questions, and would be happy to help you determine dosage, flow rates and everything else for your application.

Interactive Ozone Calculator

g/hr

Use this calculation to determine the necessary ozone production to achieve a specific ozone dosage into a water flow.

(3.78 • 60 • GPM • PPM) / 1000 = g/hr.

Standard Conditions: P = 101325 Pa, T = 273.3 K
Density of Ozone 2.14 kg/m3
Molecular Weight of Ozone 48
Density of Oxygen 1.43 kg/m3
Molecular Weight of Oxygen 32
Density of Air 1.29 kg/m3
Density of Water 1000 kg/m3
GPM Gallons per Minute
PPM Parts per Million
g/hr. Grams per Hour
SLPM Standard Liters Per Minute
% O3 Percentage Ozone concentration
g/m3 Grams per Cubic Meter
kg/m3 Kilograms per Cubic Meter
P Pressure
Pa Pascals
T Temperature
K Kelvin
CFM Cubic Feet per Minute
PPHM Parts per Hundred Million
m3 Cubic Meters
mL Milliliter
ft3 Cubic Feet


Useful Conversion Factors (for water)
1000 liters = 1m3 = 264 US Gallons
1 gallon = 3.785 liters = 3785 milliliters
1 m3 = 35.3 ft3 = 264 US gallons

Ozone Conversion Calculator

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Ozone Concentration in Water (by weight)
1 mg/l = 1 ppm O3 = 1 g O3 / m3 water
Ozone Concentration in Air (by volume)
1 g O3 / m3 = 467 ppm O3
1 ppm O3 = 2.14 mg O3 / m3
100 pphm = 1 ppm
Ozone Concentration in Air (by weight)
100 g O3 / m3 = 7.8% O3 (approximate)
1% O3 = 12.8 g O3 / m3 (approximate)
1% O3 = 7284 ppm
Ozone Concentration in Oxygen (by weight)
100 g O3 / m3 = 6.99% O3 (approximate)
1% O3 = 14.3 g O3 / m3 (approximate)
1% O3 = 6520 ppm

Ozone Concentration Calculator

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