Calculators

Quant calculators

Simple tools to read a strategy without kidding yourself. Each applies an exact formula, in plain terms, and computes in your browser — free, no sign-up.

Entered once: it feeds drawdown recovery and position sizing.

Everything is computed in your browser: the numbers you enter never leave your device.

01

Drawdown recovery

%
The drop from the peak, as a percentage.

Gain needed to break even

—

A loss and the gain that undoes it are not symmetrical

The diagonal is what we assume: lose 40%, regain 40%. The curve is what the formula gives. The gap between them is the real recovery effort.

Loss takenGain needed

02

Trade expectancy & breakeven win rate

%
Share of winning trades.
In multiples of risk (R) or in amount.
Same unit as the average win.

Expectancy per trade

—

03

Position sizing

Example values — replace them with your own.

%
The percentage of capital you choose to risk — example: 1.
%
The gap between your entry price and your stop, as a percentage.
To translate the size into units.

Position size

—

A few reference points
Loss takenGain needed to break even
10 %—
20 %—
30 %—
50 %—
70 %—
90 %—

Trading is judged on numbers, not impressions. These calculators take the essential formulas — the ones that separate a strategy that holds from one that collapses at the first shock — and make them immediately usable. All are free, work in your browser, and collect no data. They carry the same standard as the rest of Sextant, a transparent quant platform: show the formulas, and show the numbers — losses included.

Frequently asked questions

Are these calculators free?

Yes, entirely. They run in your browser, with no sign-up or credit card, and collect no data: the numbers you enter never leave your device.

What are these calculators for?

To read a trading strategy with the right metrics rather than by instinct: measuring the recovery effort after a loss, or checking whether a given win rate / win-loss ratio yields a positive expectancy. They are educational tools, not recommendations.

Are more calculators planned?

Yes. This series will grow with other quant tools — always free, always based on an explicit formula.

Trading involves a risk of capital loss. This calculator is an educational tool: it applies a formula to numbers you enter and is neither a recommendation, nor investment advice, nor a guarantee of future performance. All calculations run locally in your browser.