Terrarium Calculators
Free terrarium calculators for substrate layers, plant counts, lighting, and humidity.
Tools for terrarium builders and vivarium enthusiasts.
Terrarium Grow Light Wattage Calculator
Calculate grow light watts for a terrarium by volume and plant type. Get LED watt recommendations for low-light, tropical, and high-light setups.
Terrarium Heat Gradient Calculator
Calculate basking and cool end temperatures for any terrarium. Enter warm side target and enclosure length to plan the full heat gradient for reptiles.
Terrarium UVB Distance Calculator
Find the correct UVB bulb distance for your reptile. Enter species UV index requirement and bulb type to get the safe basking distance in inches and cm.
Terrarium Activated Charcoal Layer Calculator
Calculate the activated charcoal volume needed for a terrarium based on vessel diameter, depth, and layer thickness. Includes drainage tips.
Bioactive Terrarium Cleanup Crew Calculator
Calculate isopods and springtails needed for a bioactive terrarium from enclosure size and species. Returns starting colony size and substrate volume needed.
Terrarium Drainage Layer Calculator
Calculate drainage layer depth and volume for your terrarium from footprint dimensions. Returns LECA, gravel, or foam volume to prevent root rot.
Terrarium Misting Schedule Calculator
Calculate daily misting frequency and water volume for closed and open terrariums by plant type. Returns duration for tropical, desert, and bioactive setups.
Terrarium Plant Count Calculator
Calculate plant count for your terrarium from dimensions and type. Returns count for mosses, ferns, succulents, and tropical plants with spacing guidelines.
Terrarium Substrate Layer Calculator
Calculate the volume and depth of each substrate layer for your terrarium based on container dimensions and terrarium type.