Retaining Wall Calculator

Calculate concrete volume and check stability for gravity and cantilever retaining walls.

Wall Height (ft)

Wall Length (ft)

Top Width (in)

Bottom Width (in)

Front Batter (in/ft) Tilt back into soil

Include Footing?

Footing Width (ft)

Footing Thickness (in)

Stem Height (ft)

Wall Length (ft)

Stem Top Width (in)

Stem Bottom Width (in)

Footing Width (ft)

Footing Thickness (in)

Heel Length (ft) Behind stem (soil side)

Toe Length (ft) In front of stem

Retained Height (ft)

Backfill Soil Type

Backfill Slope

Surcharge Load (psf)

Footing Width (ft)

Wall Weight (lb/lf) Including footing

Soil on Heel Weight (lb/lf)

Allowable Bearing (psf)

Wall Height (ft)

Wall Length (ft)

Block Type

Block Batter

Geogrid Reinforcement

Include Cap Blocks?

Wall Height	Typical Footing Width	Base Thickness	Engineering Required
Up to 3 ft	0.5 × Height	8-10 in	Usually not
3-4 ft	0.5-0.6 × Height	10-12 in	Recommended
4-6 ft	0.6-0.7 × Height	12-15 in	Yes
Over 6 ft	0.7-0.8 × Height	15-18 in	Required