Turn messy legacy VBA into reviewable Python.
Interactive converter is live: paste VBA or upload .bas modules for conversion. Start with a compatibility check, view pricing, then review every change before you ship.
Prefer a quick look first? Read our guides or see real VBA to Python example conversions before you test.
Designed for Excel worksheet automation macros.
Best results for data prep, reporting, and workbook-driven workflows.
Macros that rely on Windows APIs, proprietary add-ins, or complex UI event systems are flagged during audit and may require manual follow-up.
Modernize legacy Excel VBA into reviewable, deterministic Python
VBAtoPython helps finance, payroll, and analytics teams safely migrate fragile Excel macros into maintainable Python — without hallucinations, hidden changes, or code retention.
Built for reviewable modernization
Not a demo toy. This is a controlled migration path designed for teams that need auditability.
Example conversions
See side-by-side VBA and Python with notes on what changed and why.
Risk flagged, not guessed
GoTo, On Error, resizing arrays, and complex flow are explicitly flagged for review.
Privacy-first processing
In-memory conversion. No code retention. No training on your macros.
Micro-case study: a real-world macro cleanup
This is what a typical legacy macro looks like when modernized. The goal is not ‘pretty code’ — it’s reviewable logic and visible risk.
Representative example — run your own macro to see actual stats.
What was flagged
- ⚠GoTo-driven retry loop refactored into structured flow
- ⚠ReDim Preserve used in a loop (array growth)
- ⚠Implicit Variant conversions made explicit
What you get
- ✓Deterministic Python draft you can diff and review
- ✓A list of flagged blocks with suggested refactor patterns
- ✓Conversion stats so you know where the risk lives
Why legacy VBA becomes a liability
Excel VBA powered automation for decades — but today it’s a maintenance risk. Legacy macros are hard to test, hard to version properly, and often understood by only one person who no longer works here.
When something breaks, teams face a bad choice: rewrite everything by hand, or paste proprietary logic into generic AI tools and hope for the best. Neither option is acceptable in regulated, high-trust environments.
Not a chatbot — a modernization tool
VBAtoPython analyzes real-world Excel VBA and produces deterministic Python drafts that preserve logic, expose risk, and are meant to be reviewed — not blindly executed.
- ✓Clean Python 3 drafts using openpyxl for Excel automation
- ✓Line-by-line warnings for constructs that need manual review
- ✓Flags for risky constructs (GoTo, On Error, ReDim Preserve)
- ✓A clear boundary between what is safe and what needs human review
Deterministic output — not generative guesswork
If you work in finance, payroll, or accounting, silent hallucinations are unacceptable. VBAtoPython uses a deterministic parsing engine: identical VBA input produces identical Python output. Complex constructs are explicitly flagged so you can review and refactor safely.
Designed for modern Excel and beyond
Converted Python uses openpyxl — the most widely-used Python library for Excel file manipulation. Output is structured for easy adaptation to other workflows:
- openpyxl scripts (default output)
- Portable to pandas workflows
- Adaptable for xlwings or Python in Excel
The goal is reviewable Excel automation you can extend — not lock-in to a single runtime.
Built for teams maintaining real spreadsheets
- • Analysts inheriting decade-old macros
- • Finance and payroll teams under audit pressure
- • Organizations reducing VBA dependency without breaking workflows
It’s not for learning Python syntax. It’s for making Excel automation survivable.
Example: summing a column in VBA vs Python
VBA → Python (illustrative)VBA input
Sub SumColumn()
Dim total As Double
Dim i As Long
total = 0
For i = 2 To 100
total = total + Cells(i, 3).Value
Next i
MsgBox "Total: " & total
End SubPython output (actual converter output)
import openpyxl
def SumColumn(ws):
# Dim total As Double
# Dim i As Long
total = 0
for i in range(2, 100 + 1):
total = total + ws.cell(row=i, column=3).value
print("Total: " + total)Try it yourself — paste your own macros and inspect the generated Python.
Convert VBA to Python — the safe way
If you need to migrate Excel VBA macros into Python without risking logic errors, privacy leaks, or unreviewable output, VBAtoPython gives you a controlled path forward.