Calculator
Post Hole Concrete Calculator
Estimate concrete volume and bag counts for post holes.
How to Use This Calculator
Use this calculator for fence posts, deck posts, sign posts, and similar post installations. It estimates concrete volume per hole, total concrete volume, and approximate bag counts for 50 lb, 60 lb, and 80 lb concrete bags.
Estimate Disclaimer
This calculator is for rough planning and estimating only. It is not code-specific and it is not a substitute for approved plans, engineering, manufacturer installation instructions, or local building requirements.
Always verify final dimensions, waste factors, material yield, opening sizes, header requirements, spans, fastening schedules, and any project-specific requirements before ordering material or building.