The calculators are free and open: no account, no login and no card. They exist because sizing and risk arithmetic is the part of trading most often done by guesswork.
What they cover
- Before a trade. Position size from account balance, risk percentage and stop distance; pip value; risk-reward; margin required at a given leverage.
- After a trade. Profit or loss in pips and money; drawdown from a peak; the gain needed to recover a given loss.
- Planning. Compounding and projection over a period, and the probability of a losing run of a stated length.
How to use a result honestly
Every calculator shows the assumptions it used, including the pip convention and, where relevant, the spread and slippage figures applied. Change those assumptions and the answer changes, which is the point: the tool is arithmetic, not advice. A projection is a hypothetical path, and it is labelled as one.
Inputs are processed to give you an answer. Do not paste client information, account credentials or anything you would not want repeated in a support ticket into an optional notes field.