Calculate how much rebar you need to reinforce a concrete slab.

Enter the slab dimensions, desired rebar spacing and the spacing from the edge to quickly find how to lay out the rebar grid. Finds how many rebars you need to create a reinforcement in the slab.

Inputs can be either imperial or metric with results shown to match. Results can be texted or emailed.

App Privacy

The developer, H3 Apps, LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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