Free calculators

The calculators are free. So is the account.

Two calculators, ready to use in your browser.
Plus the weekly briefing — investment ideas and the week's news.
No card, nothing to cancel.

No credit card. About a minute.
A free account includes the weekly briefing — one email a week, unsubscribe in a click.

A Stock Investing Academy valuation calculator, with the assumptions on the left and the result worked out beside them.

What the free account gets you

Three things, all included. The calculators are yours the moment you sign up, and the briefing arrives on Monday.

01

PEGY Ratio Calculator

Is this growth stock actually cheap?

Price against earnings growth and the dividend, in one number. The check that tells you whether a fast-growing company is worth what it costs.

02

CAGR Calculator

What did it really return, per year?

Turn any start and end value into an annual rate, so two investments over two different periods can finally be compared on the same basis.

03

The weekly briefing

Included with every free account.

Every Monday: three companies worth a look, the five things that actually mattered last week, and one video worth your time. One email, and one click to stop it whenever you like.

Why an account, if it's free?

So the calculators remember what you were working on, so we know where to send the briefing, and so the same login works later if you ever want the rest of it. That is the whole reason. We ask for an email address and a password — not a card, not a phone number — and we do not sell your details to anyone.

When a calculator isn't enough

There is a version that does the research too

A calculator answers one question about one company, once you already know which company. Premium is for the part before that — finding it, and understanding it.

FindA screener over the whole library, and the portfolios of 15 investors who have done this for decades
UnderstandA dashboard per company, answering the same seven questions and scoring every answer
ValueFour valuations built into every dashboard, plus all six calculators instead of two.

$0 today, then $10/month. Card required to start.
Cancel any time — see everything in Premium.

Start with the calculators.
The rest is there when you want it.

No card · includes the weekly briefing · unsubscribe any time