ULTIMATE DIYER
Post-Hole Concrete Calculator
Choose the post type, enter your actual hole depth and number of posts, then select the concrete bag.
Post / Footing:
Hole:
Concrete:
Hole:
Concrete:
Recommended Auger—
Post Size—
Concrete per Hole—ft³
Total Concrete—ft³
Exact Bags Needed—
Bags to Buy—
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DIY Guides & Project Library: ultimatediyer.com
Tools, Reviews & Buying Guides: ultimatediyer.com/tool-reviews/
Weekly DIY Videos: youtube.com/@ultimatediyer
Fence-post auger sizes are practical starting points. Deck and structural footing diameter/depth must follow the applicable load, soil, frost-depth and local code requirements.