Concrete for 15 Post Holes
Setting 15 posts in 10"-wide, 24"-deep holes takes about 31 60-lb bags of concrete (or 24 80-lb bags). Adjust the hole size and post width below.
Concrete bags
31 bags
Posts
1510" holes, 24" deep
Concrete per hole
0.92 cu fthole minus the post
60-lb bags
31 bagsor 24 × 80-lb bags
Cost (est.)
$171~$5.50/60-lb bag
Doing this for work? Estimate the whole job in minutes.
JRIQ turns plans and site photos into full material + labor estimates with AI — built by the team behind these calculators.
Try it free →
Want the full guide — tools, step-by-step, common mistakes and FAQ? See the Post-Hole Concrete Calculator.