Tools

Aquarium substrate calculator

Estimate substrate volume and bag count using your tank footprint and front/rear depth.

Plan slopes and planted layouts with confidence.

Use front and rear substrate depths to model your slope.

Length (cm)Width (cm)Height (cm)

Front depth (cm)Rear depth (cm)

Bag volume (L)Volume unit

Length unit

Other tools

Try our other free tools!

Estimate tank capacity from length, width, and height.

Compare nitrate and phosphate against common presets.

Explore volume, substrate, lighting, and dosing helpers.

Get the app

Download on iOS or Android to log water tests, plan maintenance, and get reminders on the go.

Free to startBuilt for aquascapersSync across devices