Surface Area Calculator
Surface-area tool with include-base toggle for cylinders and cones.
Limitation: Educational geometry.
How to Use the Surface Area Calculator
Surface-area tool with include-base toggle for cylinders and cones.
Open the Surface Area calculator and read field labels.
Match the mode
Educational geometry.
What It Calculates
Surface-area tool with include-base toggle for cylinders and cones.
Worked Examples
Box 4×3×5
Inputs
Result
2(12+20+15) = 94.
Sphere r = 3
Inputs
Result
4πr².
Open cylinder
Inputs
Result
Lateral 2πrh only.
Check your mode
Educational geometry.
Frequently Asked Questions
Still have questions about this calculation?
Try the CalculatorFormulas
Standard definitions with assumptions noted below.
Formula
Scientific Background
Standard geometry definitions with assumptions stated on-page. Educational only—not professional certification.
Sources & review
Surface Area Calculator documents the references behind its formulas and assumptions. Always treat results as educational estimates, not personalized professional advice.
Last reviewed
July 22, 2026
Free Calculator Hub methodology
Free Calculator Hub
/methodology
See our methodology and corrections policy.