Concrete Calculator Cylinder
Calculate concrete volume for cylindrical structures like columns, posts, and sonotube footings.
Fill in the fields and press Calculate.
1. Enter Cylinder Dimensions
Measure the diameter and height of your cylinder.
Common sizes: 8", 10", 12", 16", 18", 24"
💡 Quick Reference
Sonotube sizes: 8", 10", 12", 16", 18", 24" diameter
Typical depths: 3-4 feet for deck posts, 6-8 feet for structural columns
Common applications: Deck posts, fence posts, structural columns, light poles
2. Results
Your cylindrical concrete calculation.
Enter cylinder dimensions
Fill in the diameter and height to calculate concrete volume.
Decision Guide
Cylinder pour buying decision
Cylindrical pours often look smaller than they are. The useful decision is whether diameter, height, and quantity still keep the job practical in bags once waste is included.
Bagged mix is still realistic
Use the total waste-adjusted yards, not just one cylinder, when you price the order.
Several cylinders poured together can turn into a much larger material run than the diameter suggests.
Before you order
- Inside diameter controls the true order size.
- Quantity can change the procurement method fast.
- Waste should be priced before buying bags.
Next steps
- Confirm diameter, height, and quantity from the real forms.
- Compare waste-adjusted yards against bag count.
- If several cylinders pour together, price them as one decision.
Common mistakes
- Using outside instead of inside diameter.
- Forgetting quantity multiplies the bag count quickly.
- Stopping at volume without checking bag implications.
Use this cylinder guide for planning only. Final structural requirements and reinforcement details can change the real order.
About Concrete Calculator Cylinder
Our concrete calculator cylinder tool is specifically designed for calculating concrete volume in cylindrical structures. This is perfect for columns, posts, sonotube footings, and other round concrete elements.
Common Cylindrical Applications
- Deck Posts: Support columns for decks and porches
- Fence Posts: Concrete footings for fence installations
- Structural Columns: Load-bearing columns in buildings
- Sonotube Footings: Round concrete forms for foundations
- Light Poles: Street light and parking lot light foundations
- Flag Poles: Concrete bases for flag pole installations
How to Measure Your Cylinder
- Diameter: Measure across the widest part of the cylinder (inside diameter for forms)
- Height: Measure from bottom to top of the concrete structure
- Quantity: Count how many identical cylinders you need
Standard Sonotube Sizes
Small Projects
- 8" diameter - Small posts, light fixtures
- 10" diameter - Deck posts, small fences
- 12" diameter - Standard deck posts
Large Projects
- 16" diameter - Large deck posts, structural columns
- 18" diameter - Heavy structural support
- 24" diameter - Large structural columns
Tips for Cylindrical Concrete
- Always add 10% waste factor for spillage and uneven ground
- For sonotube footings, measure the inside diameter of the form
- Consider using concrete bags for small quantities (under 1 cubic yard)
- Order ready-mix concrete for larger projects or multiple cylinders
- Ensure proper reinforcement (rebar) for structural applications