Quikrete, Sakrete and post-fix foam
Best Concrete Mix for Fence Posts in 2026 is a free guide from Smart Fencing Calculator. Compare Quikrete, Sakrete and Sika post-fix foam for setting fence posts, plus how many bags per hole and why fast-setting mix beats standard bagged concrete. This guide 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. Quikrete, Sakrete and post-fix foam.