Square Pyramid Calculator

Square Pyramid Calculator

Calculate volume, surface area, and lateral surface area of a square pyramid. Essential for geometry, architecture, and 3D modeling.

Last updated: April 2026 | By Patchworkr Team

Volume
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What Is a Square Pyramid?

A square pyramid is a 3D geometric shape with a square base and four triangular faces that meet at a single point called the apex or vertex. It's one of the most fundamental polyhedra in geometry.

Real-world examples include the Egyptian pyramids, tent structures, and rooftops. Square pyramids are used extensively in architecture, engineering, and mathematical modeling to calculate volume and surface area.

Key measurements include the base length (side of the square base), the height (perpendicular distance from base to apex), and the slant height (distance from base edge midpoint to apex).

How To Calculate Pyramid Properties

Volume formula

V = (1/3) × base² × height

The volume is one-third of the base area times the height.

Surface area formula

Total SA = base² + 4 × (1/2 × base × slant height)
where slant height = √((base/2)² + height²)

Includes the base square plus the four triangular faces.

Lateral surface area

Lateral SA = 4 × (1/2 × base × slant height)

Only the four triangular faces, not including the base.

Worked Example: A Pyramid With Base 10 and Height 12

Calculate the volume of a square pyramid with base length 10 and height 12.

V = (1/3) × 10² × 12
V = (1/3) × 100 × 12
V = 400 cubic units
400 cubic units

Frequently Asked Questions

What's the difference between height and slant height?

Height is perpendicular from base to apex. Slant height runs along the triangular face from base edge midpoint to apex.

How is a square pyramid different from a triangle pyramid?

A square pyramid has a square base (4 sides), while a triangular pyramid (tetrahedron) has a triangular base (3 sides).

Why is the volume formula divided by 3?

A pyramid fills exactly 1/3 of the volume of a rectangular prism with the same base and height.

Can I calculate this if I only know the slant height?

Yes, but you need either the base or regular height. Use: height = √(slant height² - (base/2)²).

What units should I use?

Any consistent unit works (cm, m, ft, etc.). Volume is in cubic units, area in square units.

How do I find the surface area of just the triangular faces?

That's the lateral surface area—one of the calculator modes.

Are Egyptian pyramids square pyramids?

Most major Egyptian pyramids are square pyramids, though their bases are very large (e.g., Great Pyramid: 230m × 230m base).

What if the pyramid is oblique (tilted)?

This calculator assumes a right pyramid (apex directly above base center). Oblique pyramids require different calculations.

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