Concrete Post Hole Calculator

How It Works

Streamline your concrete project with our free concrete post hole calculator.

In just 3 simple steps, find the precise concrete quantity required for your circular or tubular structures. No matter the varying dimensions or number of post holes, our calculator is designed to make the process seamless.

Let's get calculating!

Step-by-Step Tutorial

Calculating how much concrete you need has never been easier. Follow these 3 simple steps to make the process seamless and efficient. Let's get started!

1. Choose Your Settings

Select your unit type, cost type (by bag or by the yard/meter), bag size, cost and desired waste amount. Your settings will be automatically saved for when you come back the next time.

2. Choose Your Shape(s)

‍We understand that many projects require multiple shapes or dimensions. Choose from a slab, footing, column, stairs, curb/gutter, circle/tube or any combination of them—it doesn't matter how many you have, we'll do the heavy lifting.

3. Add Your Dimensions

‍Once your shapes are added, input the dimensions that you've measured for each of them. After that, your results will be shown!

Pretty easy, isn't it?

Edit, Save and Repeat

Now you can easily measure all of your concrete projects. Bookmark this page and your calculations will be here when you return. When you're done, reset the calculator and start with a fresh one.

Concrete Post Hole Formula

The Formula: Height × PI × (Outer Diameter × Outer Diameter - Inner Diameter × Inner Diameter) × Quantity ÷ 4