Seventeen calculators for the decisions founders make with a spreadsheet at midnight

Every one runs in your browser, shows its formula, and asks for nothing. Built by an operator who has had to defend these numbers to a board.

Free No signup Built by an operator, not a vendor

Money and fundraising

What the round costs, what the company is worth, and how long the cash lasts.

Growth and retention

Whether the customers you already have are worth more this year than last.

Unit economics

What one customer costs to win, what they return, and whether the two work.

Product decisions

Which thing to build, what waiting costs, and whether the team can carry it.

How these differ from every other calculator page

No email wall

Your result appears as you type. There is no gate, no unlock-the-full-report step, and no drip sequence waiting on the other side.

Methodology shown

Every tool prints its formula, its assumptions, and the conditions under which the number it gives you is wrong.

Built by an operator

Eighteen years in CEO and CPO seats. These are the models I actually used, not a lead magnet built by a marketing team.

Book a 30-minute product strategy session

Bring whichever number came out wrong. We will work out what moves it.

Book a strategy session

No pitch deck. No follow-up sequence.