Built for structural engineers
Excel is fragile. Pre-built
engineering tools are rigid.
Build your own.
Drag in your existing spreadsheets, or build new calcs from scratch. Either way: version history, sliders, batch processing, calc sheets, and auditing built in.
“Pipelines is an incredibly intuitive tool for stringing together calculations into a seamless workflow. It has the potential to massively speed up tedious and repetitive calculations.”
Nick Reichinger
Director, SDA Structures
“Fontana took my Excel spreadsheets and turned them into professional engineering calc sheets I can trust—versioned, consistent, and impossible to accidentally break.”
Paul Moore
Director, EPS Consult — Past-President, ACSE
How It Works
From Excel spreadsheet to shared engineering tool in three steps
Upload
Drag any Excel calc sheet in. Fontana accepts .xlsx files with formulas, named ranges, and multi-sheet workbooks.
Convert
Fontana parses your formulas, identifies inputs and outputs, and builds an interactive calculator automatically.
Share
Your calc is now versioned, shareable, and won't break when someone changes a cell. The whole team uses one source of truth.
How Fontana Elevates your Excel Spreadsheets
Built into every calc — whether you converted it from Excel or built it from scratch.
Steel sections, material data, and reference tables — built in
Link engineering reference data directly into your calcs. Steel section properties, material data, capacity tables — select from a dropdown and every dependent formula recalculates instantly.
Calc sheets that look like the engineering reports your team already uses
Fontana renders every calculation as a clean, printable calc sheet — formatted like the engineering reports your team already submits and reviews. The output feels familiar, not foreign.
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.
See exactly what changed, when, and by whom
Every change to a calc is tracked. Roll back any edit with a click, see who modified what, and answer the 'why is this number different from last week?' question in seconds.
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.
Also In Fontana
Beyond Excel conversion, Fontana includes search across your engineering documents and an AI calculator builder.
Search & Citations
Upload your engineering documents and search them with natural language. Get answers with citations linking back to the exact page.
Learn more →AI Calculator Builder
Don't have an Excel to convert? Describe a calculation in plain English and Fontana builds it from scratch — sliders, formulas, and sensitivity charts.
Learn more →Ready to move your calcs off Excel?
Book a demo and we'll convert one of your spreadsheets live.
Book a Demo