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VolLab
Every common solid's surface area, one dropdown away.
Surface area is the total area you'd need to cover a solid completely — for flat-faced shapes like a cube or box, that's literally summing each face's area; for curved shapes like a sphere or cylinder, calculus-derived formulas do the same job.
Two solids can have identical volume but very different surface area (a flattened shape has far more surface for the same volume than a compact one) — this matters directly for heat loss, material/paint cost, and packaging design.
Surface area
150
What you entered
Surface area = 6s²
6 × 5²= 150Result
Surface area: 150
The total surface area is 150 square units — the sum of the area of every face of the solid.