✨ Free Online Tool
square foot Cylinder Calculator
Use this cylinder calculator page to estimate square footage and related area measurements for round projects and cylindrical surfaces.
Cylinder Calculator
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Total Surface Area
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All Square Foot Calculators
Choose a specialized calculator for your specific project type.
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Room Calculator
Calculate the square footage of any room. Includes presets for bedrooms, kitchens, bathrooms, and more.
Calculate Room Area →🪵
Flooring Calculator
Figure out how much flooring material you need, including a waste factor for hardwood, laminate, vinyl, or carpet.
Calculate Flooring →🔲
Tile Calculator
Calculate area and the exact number of tiles needed based on tile size and grout gap spacing.
Calculate Tiles →🪨
Concrete Calculator
Calculate the area and volume of concrete needed in cubic yards, with adjustable depth/thickness.
Calculate Concrete →🧱
Wall Calculator
Measure wall area for painting, wallpaper, or siding. Supports multiple walls and door/window deductions.
Calculate Wall Area →📐
Triangle Calculator
Calculate square footage for triangular spaces using base and height, with support for different triangle types.
Calculate Triangle →🔷
Odd Shapes Calculator
Calculate area for irregular and L-shaped rooms by combining multiple rectangles, triangles, and circles.
Calculate Odd Shapes →📏
Feet & Inches Calculator
Enter dimensions using separate feet and inches fields for precise measurements without decimal conversion.
Calculate with Inches →🗺️
Map Calculator
Draw shapes on an interactive map to calculate the square footage of land, lots, and properties.
Calculate on Map →Cylinder Area Formulas
A cylinder has three measurable surfaces: the circular top, the circular bottom, and the curved lateral surface. Use these formulas depending on what you need to paint, wrap, or cover:
Base Area (ft²) = π × r² | Lateral Area (ft²) = 2π × r × h | Total Surface Area (ft²) = 2π × r² + 2π × r × h
For volume: Volume (ft³) = π × r² × h. Divide by 7.48 to convert to gallons, or by 27 for cubic yards.
When to Use Each Formula
- Painting a cylinder: Use lateral area (the curved side only)
- Covering top and bottom lids: Add 2 × base area
- Filling with liquid or material: Use volume
How to Measure a Cylinder
- Measure the radius or diameter: Measure across the circular top or bottom at the widest point. Divide by 2 for the radius.
- Measure the height: The vertical distance from the base to the top.
- Select what to calculate: Base area, lateral area, total surface area, or volume.
Common Cylinder Calculations
| Object | Typical Diameter | Use Case |
|---|---|---|
| Round pillar | 1–2 ft | Paint coverage |
| Water tank | 4–8 ft | Volume (gallons) |
| Grain silo | 20–30 ft | Storage capacity |
| Round pool | 15–24 ft | Water volume |
| Tree trunk | 1–4 ft | Wrapping material |
All Square Foot Calculators
Choose a specialized calculator for your specific project type.
Room Calculator
Calculate the square footage of any room. Includes presets for bedrooms, kitchens, bathrooms, and more.
Calculate Room Area →Flooring Calculator
Figure out how much flooring material you need, including a waste factor for hardwood, laminate, vinyl, or carpet.
Calculate Flooring →Tile Calculator
Calculate area and the exact number of tiles needed based on tile size and grout gap spacing.
Calculate Tiles →Concrete Calculator
Calculate the area and volume of concrete needed in cubic yards, with adjustable depth/thickness.
Calculate Concrete →Wall Calculator
Measure wall area for painting, wallpaper, or siding. Supports multiple walls and door/window deductions.
Calculate Wall Area →Triangle Calculator
Calculate square footage for triangular spaces using base and height, with support for different triangle types.
Calculate Triangle →Odd Shapes Calculator
Calculate area for irregular and L-shaped rooms by combining multiple rectangles, triangles, and circles.
Calculate Odd Shapes →Feet & Inches Calculator
Enter dimensions using separate feet and inches fields for precise measurements without decimal conversion.
Calculate with Inches →Map Calculator
Draw shapes on an interactive map to calculate the square footage of land, lots, and properties.
Calculate on Map →Inches Calculator
Calculate square footage from inch-based measurements and convert the result to square feet.
Calculate Inches →Height Calculator
Use height-based dimensions for walls, triangles, and other square footage projects.
Calculate with Height →Circle Calculator
Find the square footage of circular areas from radius measurements.
Calculate Circle Area →Rectangle Calculator
Calculate rectangular square footage from length and width for rooms, floors, and lots.
Calculate Rectangle →Driveway Calculator
Calculate driveway square footage for concrete, asphalt, gravel, or paver projects.
Calculate Driveway →Roof Calculator
Estimate roof square footage for shingles, underlayment, and roofing materials.
Calculate Roof Area →Garden Calculator
Measure garden beds, lawns, mulch areas, soil coverage, and landscaping spaces.
Calculate Garden Area →House Calculator
Calculate house square footage for rooms, additions, renovations, and floor plans.
Calculate House Area →Google Maps Area Calculator
Calculate land and property area with a map-style square footage calculator.
Calculate Map Area →Price Per Sq Ft Calculator
Compare homes, materials, land, and projects by price per square foot.
Calculate Price →Rent Per Sq Ft Calculator
Calculate rent per square foot for apartments, offices, retail, and warehouse spaces.
Calculate Rent →App Calculator
Use a fast square foot calculator app-style page for common area measurements.
Open App Calculator →Sq Ft to Acres Calculator
Convert square feet to acres for lots, land, fields, and property sizes.
Convert to Acres →Sq Ft to Yards Calculator
Convert square feet to square yards for flooring, carpet, fabric, and materials.
Convert to Yards →Sq Ft to Meters Calculator
Convert square feet to square meters for international area measurements.
Convert to Meters →India Calculator
Calculate square footage for flats, plots, houses, flooring, and construction in India.
Calculate for India →Frequently Asked Questions
Total Surface Area = 2π × r² + 2π × r × h. Add the two circular ends (2πr²) to the curved side (2πrh). For a cylinder 3 ft in radius and 10 ft tall: 2π(9) + 2π(3)(10) = 56.55 + 188.50 = 245.04 sq ft.
The lateral area is the curved side only: 2π × r × h. Think of it as the area of a rectangle rolled into a tube — width = circumference (2πr), height = h.
Volume = π × r² × h. A cylinder 5 ft in radius and 8 ft tall holds π × 25 × 8 = 628.32 cu ft (about 4,699 gallons).
Calculate the lateral surface area (2πrh). One gallon of paint covers roughly 350–400 sq ft. Divide the lateral area by the coverage rate to get the number of gallons needed.
Yes. Calculate the full cylinder surface area and divide by 2 for the curved part, then add the rectangular flat face (diameter × height) and one semicircle base if needed.