Cubic feet and bag count for setting posts
Concrete Calculator for Fence Posts is a free calculator from Smart Fencing Calculator. Estimate cubic feet of concrete and the number of 60 lb or 80 lb bags needed to set fence posts. Free post-setting calculator with depth and diameter inputs. This calculator is built for homeowners, DIYers and fencing contractors who want fast, accurate fence estimates without signing up or installing anything. Enter your fence dimensions, choose your material, and the tool returns the materials list, quantities and indicative project cost in seconds. Every result is rounded with a sensible waste factor so you can take the numbers straight to a lumberyard or supplier. Use it alongside our other free fence calculators for posts, pickets, rails, concrete, gates, stain and total project cost. If you are pricing a full project, start with the linear footage calculator, then layer in posts, pickets and concrete to build a complete bill of materials. Need help understanding any of the inputs? Browse our fencing guides for measuring, post depth, post setting, staining and material selection — written for real backyard projects, not generic construction theory. Cubic feet and bag count for setting posts.