Loading verified Google profile...
Free Tool
Fence Post Concrete Calculator
Rocklin installers typically set posts 24 to 30 inches deep on residential lots; granite and decomposed-granite footing may require narrower holes or additional bags. This tool estimates cubic volume per hole (π × radius² × depth) and converts to 60-pound ready-mix bags for your post count.
How this tool works
- Enter the number of fence posts you plan to set.
- Set hole diameter and depth—10 inches wide by 24 inches deep is a common residential default.
- Review total volume and 60-pound bag count before ordering concrete.
Assumptions & notes
- Calculations assume cylindrical post holes and 60-pound bags yielding roughly 0.45 cubic feet each.
- Rocklin's granite-influenced soil may require oversized holes or extra bags beyond this estimate.
- Gate posts and taller HOA-spec panels often call for deeper footings than this baseline—confirm before digging.
Frequently asked questions
How deep should fence posts be in Rocklin?
Most residential posts are set 24 to 30 inches deep. Taller gates and HOA-spec panels often call for deeper footings than a standard 6-foot privacy run.
Can I use fast-setting concrete?
Yes—fast-setting mixes are popular for post-setting. Bag yield is similar; follow the manufacturer label for water ratio and set time.
What if I hit granite while digging?
Granite and decomposed granite are common in Rocklin (it's nicknamed the 'City of Granite' for a reason). You may need to relocate the hole slightly, pin to rock, or use a larger footing—this calculator cannot predict subsurface conditions.
Google Reviews
Trusted across Northern California
A verified Google Business Profile with real customer feedback.
Loading verified Google profile...
Get a free estimate
Tell us about your Rocklin-area fence project — we will give you a straight answer and a real quote.
Phone (916) 906-2254
Rocklin, CA — Serving Rocklin, Loomis, Lincoln, and Granite Bay
- California contractor license #1089233
- Residential & HOA-community fencing
- Warranty-backed workmanship — ask us for project details