What DeckCalc does
DeckCalc helps you estimate deck boards, joists, fasteners, waste, and known material costs for a project. Advanced options can also support additional planning details, project estimates, and exportable summaries.
Built for useful first-pass planning
The calculator is designed for homeowners, contractors, estimators, and anyone who needs a clear starting point before requesting quotes or finalizing a material order. Prices are editable so you can use your own local supplier information instead of relying on one national price.
Privacy-first calculations
Core calculator inputs and results are processed in your browser. DeckCalc does not require signup, payment, or a user account for the free calculation tools.
Important planning note
DeckCalc provides estimates, not structural design or building-code approval. Confirm quantities, spans, footings, connections, and local requirements with qualified professionals before purchasing materials or building.