Concrete Pier Cost Calculator Guide
Estimate concrete pier cost by diameter, depth, count, bags or ready-mix, rebar, forms, post bases, inspection, access, and quote scope.
A concrete pier cost calculator should separate volume from the installed footing scope. The concrete inside the pier is only one part of the estimate. Pier work can also include layout, digging, tubes or forms, rebar, post bases, inspection, access, cleanup, and warranty.
Use the Concrete Post Hole Calculator for round-hole volume and bags. Use the Concrete Quote Reviewer to compare pier bids and the Concrete Proposal Kit to build a line-item contractor estimate.
Competitor pages such as ConcreteCalculatorMax's pier caisson calculator and ConcreteCalculator.pro's tube calculator show the quantity intent. This guide adds the quote and cost scope around the quantity.
Quick answer
For one cylindrical concrete pier:
cubic feet =
3.1416 x (diameter ft / 2)^2 x depth ft
Then multiply by the number of piers and add waste:
pier cost =
concrete volume after waste
+ tubes, digging, rebar, post bases, inspection, access, cleanup, and labor
Concrete piers often support structural loads. Use this page for budgeting and quote comparison only. Confirm diameter, depth, frost, loads, rebar, hardware, inspection, and local code with a qualified local professional.
Pier cost inputs
| Input | Why it matters | Quote question |
|---|---|---|
| Pier count | Multiplies digging and concrete. | How many piers are included? |
| Diameter | Changes volume quickly. | What diameter is specified? |
| Depth | Affects frost and load assumptions. | What depth is included? |
| Tube or form | Sonotube, reusable form, or open hole. | Are forms included and removed? |
| Rebar | May be required by design. | What bar size and layout are included? |
| Post base | Hardware can be separate. | Are anchors, brackets, or embeds included? |
| Inspection | Structural piers may need inspection. | Who schedules and handles corrections? |
| Access and cleanup | Soil, spoil, and bags need handling. | Who removes spoils and packaging? |
If the piers are deck footings, compare the Deck Footing Contractor Quote Checklist. If they are tube-specific, use the Sonotube Contractor Quote Checklist.
Example pier volume checks
These examples show concrete volume only before labor, forms, hardware, and inspection.
| Pier size | Volume per pier | 80 lb bags per pier |
|---|---|---|
| 10 in dia x 36 in deep | about 1.64 ft3 | about 3 bags |
| 12 in dia x 36 in deep | about 2.36 ft3 | about 4 bags |
| 12 in dia x 48 in deep | about 3.14 ft3 | about 6 bags |
| 16 in dia x 48 in deep | about 5.59 ft3 | about 10 bags |
Bag counts use a common 0.60 ft3 yield for 80 lb bags and are rounded up. Always check the actual bag yield and any required waste factor.
Quote worksheet
| Quote line | Bid A | Bid B | Notes |
|---|---|---|---|
| Pier count and layout | Locations and tolerances. | ||
| Diameter and depth | Frost and design assumptions. | ||
| Excavation | Soil, rock, water, roots. | ||
| Tubes or forms | Material, bracing, cut height. | ||
| Rebar and embeds | Included, excluded, owner supplied. | ||
| Concrete method | Bags, ready-mix, pump, buggy. | ||
| Inspection | Who schedules and pays. | ||
| Cleanup | Spoil, bags, tubes, washout. |
For cost comparison across bids, enter the same lines in the Concrete Quote Reviewer.
FAQ
How do I calculate concrete for a pier?
Use the cylinder formula: pi times radius squared times depth. Convert diameter and depth to feet, then multiply by the number of piers and add waste.
Is pier cost just the concrete?
No. Pier cost can include layout, digging, forms, tubes, rebar, hardware, inspection, access, cleanup, overhead, and labor.
Can I fill concrete piers with bags?
Sometimes, especially for small counts. Large pier counts, deep holes, or difficult access may justify ready-mix, buggy, or pump placement.
Should pier depth be in the quote?
Yes. Depth affects volume, digging, frost performance, inspection, and cost.
Does this replace engineering?
No. Pier design, load capacity, frost depth, reinforcement, hardware, and permits should be confirmed by a qualified local professional.
Next step
Calculate pier volume, then compare the full installed scope in the Concrete Quote Reviewer before accepting a bid.
Quote planning next step
Turn this guide into a concrete buying check
Run the matching calculator, then compare ready-mix, bagged concrete, delivery fees, access needs, and quote gaps before you buy materials or approve a contractor number.