Terrain Calculator — Scenic Material Quantities
Estimate plaster, foam, sand and scenic materials needed for terrain features on your diorama base.
Extra material for offcuts and mistakes
How We Calculate This
The calculator estimates terrain material volume based on your base area, maximum terrain height and a coverage factor for the terrain type.
Formula
- Volume = Base area x Max height x Coverage factor
- Flat terrain uses ~10% fill, rolling hills ~30%, rugged ~50%
- Plaster weight is estimated at 1.2 g/cm3
Frequently Asked Questions
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Last updated: February 2026
All calculations are estimates. Always verify quantities before purchasing materials.