Terrarium Humidity Control Calculator

Misting schedule from enclosure volume and target humidity.

Enclosure volume (gallons)

Target humidity (%)

Ambient room humidity (%)

Ventilation type (0-2)

Tab to move between fields

Mistings per day

Misting duration (sec)80

Water per misting (oz)20

Daily water use (oz)60

Monthly water use (gal)14.1

How to Use This Calculator

Enter Enclosure volume (gallons), Target humidity (%), and Ambient room humidity (%).
Set Ventilation type (0-2).
Review the Mistings per day result.
Use Misting duration (sec) and Water per misting (oz) to inform your decision.

What each input means

Enclosure volume (gallons): Approximate enclosure volume in gallons.
Target humidity (%): Desired relative humidity for your species (e.g. 60-80% for tropical).
Ambient room humidity (%): Typical relative humidity in the room where the enclosure is kept.
Ventilation type (0-2): 0 = sealed with vents (lowest loss), 1 = partial screen, 2 = full screen top (highest loss).

Mistings per day: Recommended number of misting sessions per day.
Misting duration (sec): Seconds per misting session for auto-misting systems.
Water per misting (oz): Ounces of water used per misting session.
Daily water use (oz): Total water consumption per day.
Monthly water use (gal): Monthly water consumption in gallons.

Identify Input Parameters
4 parameters
Enclosure volume (gallons) = 40, Target humidity (%) = 75, Ambient room humidity (%) = 40, Ventilation type (0-2) = 0 = 4 input(s) provided
Calculate Mistings per day
Mistings per day
3 = 3
Calculate Misting duration
Misting duration = max(5, waterPerMistingOz * 4)
80 = 80
Calculate Water per misting
Water per misting = enclosureVolumeGal * 0.5 * (humidityGap / 35)
20 = 20