Concrete for 20 posts
Two 50 lb bags of post mix per post.
Post mix bags
40
Posts
20
bags = 20 posts × 2 = 40
Based on two 50 lb bags of fast setting mix per post.
Open the Concrete CalculatorAbout this estimate
A standard fence post hole takes about two bags of fast setting post mix. Deeper or wider holes for taller fences or gate posts need more, so treat this as a starting figure.
Setting posts? A post hole digger or auger makes quick work of a long fence line.
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Common questions
How much concrete for 20 fence posts?
About 40 bags of fast setting post mix, based on two 50 pound bags per post for a standard hole.
How many bags of concrete per fence post?
About two bags of fast setting post mix per post. Larger or deeper holes need more.
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