monty.

A better way to think in numbers

Less certainty.
Better decisions.

Spreadsheets hide the uncertainty in your assumptions. Monty makes it visible. Sketch a model, explore the possible outcomes, and find out which inputs matter.

No spreadsheet required. Try it without an account.

A simple model

What might happen?

A Visitors
1,000 – 2,000
B Conversion
2% – 5%
C Customers
A × B

Replace single guesses with ranges. See the shape of what’s possible.

From the community

Explore models

Start with an idea and make it your own.

A blank canvas for now

Be the first to put a question into a model.

Try a model