Built for Engineers, by Engineers
Two tools, one platform. Professional calculators that replace your Excel spreadsheets, and semantic search across your engineering documents.
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Your Excel spreadsheets, elevated
Drag in your existing spreadsheets or build new calcs from scratch. Every feature below is built into every calculator.
Drop your existing Excel calcs in — get extra features not extra work
Import your existing Excel calculations with a single click. Fontana automatically converts them into clean, interactive calculators with revision history, sensitivity analysis, printable calc sheets and more.
Pass/fail checks and live sensitivity analysis on every input
Every calc can include pass/fail status and interactive sliders that show exactly how outputs respond to changing inputs. Explore the design space and verify decisions before they ship.
Outputs from one calc feed straight into the next
Chain calculations into pipelines. Outputs from one step automatically become inputs to the next, so a full design sequence runs end-to-end without manual handoffs.
Search your engineering library
Upload your engineering documents and search across all of them with cited answers linked to the exact page.
Search across every document with cited answers linked to the page
Search your personal documents, organisation libraries, and shared resources in one place. Every result links back to the exact page so you can verify the source and cite it with confidence.
Get instant answers from your engineering tables — like steel sections and material properties
Engineering reference tables — like geometric steel sections — live natively in Fontana's database. Ask things like "what's the difference between the heaviest 180UB and the lightest 200UB?" and the agent pulls the exact values, reasons over them, and gives you a sourced answer.
Inspect every referenced source with a relevance score for each page chunk
Every answer comes with a referenced sources table showing the relevance score for each page chunk used in the summary. Open any source directly to verify the quality of the citation.