Free aquarium calculators
Simple planning tools for freshwater planted aquariums, from startup budget and tank volume to CO2 planning and maintenance decisions.
Estimate the real startup budget for tank, light, filter, soil, CO2, hardscape, plants, livestock, and tools.
Calculate aquarium water volume in liters and gallons from length, width, height, substrate depth, and waterline.
Get a starting CO2 bubble rate estimate based on tank volume, plant demand, and injection intensity.
Many planted tank problems start before the tank is filled: unrealistic budgets, weak lighting, poor flow, unstable CO2, too little plant mass, and missing maintenance routines. Tiny Useful Tools turns those decisions into simple calculators.