Your VBA macro is not a ChatGPT prompt.

Save 8-12 hours per module. Stop rewriting macros by hand.

Turn messy legacy VBA
into reviewable Python.

Paste VBA or upload .bas modules. Get a free compatibility audit, review every flagged construct, then export clean Python — without hallucinations, hidden changes, or code retention.

Check Compatibility Free Audit Try it now →

✓

Deterministic — no hallucinations

⊘

In-memory · no code retention

✓

Output syntax-verified by ast.parse()

VBA Input→Python Output

Sub ProcessData()
  Dim ws As Worksheet
  Set ws = ThisWorkbook.Sheets("Data")
  For Each row In ws.Range("A2:A100")
    If ws.Cells(row,"B").Value > 0 Then
      ws.Cells(row,"C").Formula = "=VLOOKUP(...)"
    End If
  Next row
End Sub

# deterministic output — openpyxl
import openpyxl

def process_data(ws):
  # ⚠ flagged: implicit range end
  for row in range(2, 101):
    if ws.cell(row, 2).value > 0:
      ws.cell(row, 3).value =
        vlookup_equiv(ws, row)
  return ws

From the Guides

VBA to Python Syntax Mapping

Every data type, loop, and function mapped side by side.

Loops

For, For Each, Do While — converted to Python.

VBAtoPython vs ChatGPT

Why a deterministic converter beats a generative one.

View all guides →

612→540

Lines of VBA modernized
in a typical Excel module

Example stats — yours will vary

Risk flags surfaced
GoTo, ReDim, implicit variants

Explicitly flagged, not guessed

8-12 hrs

Developer time saved
per 500-line module

$800-1,600 at typical dev rates

Lines of your code retained
In-memory · immediate discard

Privacy-first by design

Try it yourself

Paste VBA, get Python

Edit the sample below or paste your own macro. The converter runs in real-time — no account needed for up to 50 lines.

VBA input

Python output

Click "Convert" to see Python output...

Free · Up to 100 lines · No account needed

How it works

Three steps to clean Python

No account needed. No black box. Every change is visible, every risk is flagged.

📋

Paste or upload your VBA

Paste a macro directly or upload a .bas module. Works with any Excel VBA — data processing, report generation, automation scripts, scientific models.

Free · No account

🔍

Review the audit report

Get a compatibility check with every risky construct surfaced — GoTo flows, ReDim Preserve, implicit variants, On Error patterns. Nothing is hidden or silently rewritten.

Full visibility

⚡

Export reviewable Python

Receive deterministic Python mapped to openpyxl. Side-by-side diff with change notes. Export to your repo and review before running a single line.

Diff-ready output

Why not just use ChatGPT?

Generic AI guesses.
This converter maps.

AI converters produce different output every time and silently change your logic. A deterministic converter gives you the same result every run, with every change flagged.

Generic AI (ChatGPT, Copilot)Not recommended

Generative models that produce plausible-looking code with no guarantees

❌Non-deterministic — same input produces different output each run
❌Silent hallucinations — wrong logic presented with confidence
❌Your code may be used for model training
❌No audit trail — no record of what changed or why
❌Complex constructs (GoTo, On Error) silently mangled

VBAtoPythonDesigned for this

Deterministic parser built specifically for Excel VBA modernization

✅Deterministic — identical input always produces identical output
✅Risky constructs explicitly flagged — never silently rewritten
✅In-memory processing — zero code retention, zero training
✅Full change log — every transformation is documented
✅Built for audit — reviewable diff before you ship anything

Who it's for

Built for anyone with a VBA macro they need in Python

You didn't write the macro. You just need it to work in Python.

📊

Data Analyst

Migrating Excel workflows to Python

You have a macro that processes reports, cleans data, or generates spreadsheets. You need it in Python but don't want to rewrite 500 lines by hand.

“I need a starting point I can review and adjust — not a blank page or an AI guess.”

🔬

Researcher / Scientist

Moving computational models to Python

Your lab or team has VBA models built over years — optimization, simulation, data processing. Python is the future but the migration is daunting.

“I need the math to stay exactly the same. One rounding change breaks the whole model.”

💻

Developer / Engineer

Handed a folder of .bas files

Someone left, and now you own their macros. You need a controlled starting point for the migration — not a rewrite from scratch.

“I want a diff I can review, not a black box that might have silently changed the business logic.”

Run your first
free audit.

Paste any VBA macro. Get a compatibility report, risk flags, and a reviewable Python draft — in seconds. No account. No credit card. No surprises.

Check Compatibility Free Audit What it converts →

No account needed · In-memory processing · Results in seconds

Turn messy legacy VBAinto reviewable Python.