Excel to Visual Basic
Convert Excel to Visual Basic code
Turn Excel formulas into a .NET 8 Visual Basic library with generated tests, running on a compiled Rust engine. A modern home for spreadsheet logic.
How it works
- 1
Tag inputs and outputs
Mark which cells in your workbook are inputs and which are results. Your formulas stay exactly as they are.
- 2
Generate Visual Basic code
Codcel reads every formula and dependency and generates a Visual Basic project that you own.
- 3
Test against Excel
Generated tests compare the code's results with your workbook's values, so you can show they match.
What Codcel generates for Visual Basic
Calculation library
Every calculation in your workbook becomes a Visual Basic function with typed inputs and outputs.
Powered by a compiled Rust engine
The Visual Basic code calls Codcel's open-source calculation engine, compiled from Rust, through FFI. You get Visual Basic ergonomics with native speed.
Build and test
- Build system
- .NET 8.0
- Prerequisites
- .NET 8 SDK
- Build
dotnet build -p:CodcelTargetOS=<linux|macos|windows>- Test
dotnet test -p:CodcelTargetOS=<linux|macos|windows>
Why teams use Codcel
460+ Excel functions
Lookups, dynamic arrays, financial, statistical, text and date functions, with the known differences from Excel documented.
Source code you own
No proprietary runtime and no lock-in. The code lives in your repository and is reviewed like any other code.
Built for large models
Tables with millions of rows, including a one-billion-row benchmark, run through the same engine.
Proven against Excel
Generated tests check the code's results against the values in your spreadsheet.
Frequently asked questions
- Can Codcel convert any Excel spreadsheet to Visual Basic?
- Codcel converts the formulas, named ranges and tables in .xlsx, .xlsb and .xls workbooks, and supports more than 460 Excel functions. The documentation lists every supported function and the few known differences from Excel.
- Do I need to rewrite my formulas?
- No. You mark which cells are inputs and outputs, and Codcel reads your formulas as they are.
- Is the generated Visual Basic code readable?
- Yes. It is ordinary source code with typed inputs and outputs and generated tests. Your developers can review it, version it and change it.
- Does the generated code need Excel or a Codcel service?
- No. The generated project runs without Excel and without calling any Codcel service. It includes the open-source Codcel calculation engine, which is built along with your code.
- How much does it cost?
- Codcel is free for personal use. Commercial use runs on credits, and every plan includes the full source code and all generation options.
Turn your spreadsheet into Visual Basic code
Download Codcel Desktop for free, or bring your hardest model to a 30-minute demo.