FREE EA TRADING TOOLS
Tools Built for Automated Traders
These aren't generic trading calculators. Every tool here is built specifically for setting up, evaluating and managing Expert Advisors, because manual trading maths doesn't answer the questions automated traders actually have. Work out the lot size a risk setting really implies, what an EA's drawdown history cost and what it would take to recover, and how much per-trade risk a prop firm challenge will tolerate before it fails you.
Seven Free Tools, and What Each One Answers
Every tool below runs in your browser. Nothing you enter is sent to us or stored, none of them require an account, and each one shows the arithmetic rather than just the answer.
Position Size Calculator
Turns an account balance, a risk percentage and a stop distance into a lot size. Risk is the decision; lot size is the consequence — this works it out in that order rather than the other way round.
Work out a lot size →Forex Profit Calculator
Turns a trade's pair, lot size and open and close prices into a profit or loss in pips and in your account currency, before and after commission and swap. It also turns an EA vendor's pip claims into money at the lot size they actually traded.
Calculate a profit →Risk Reward Calculator
Turns a stop and target, in pips or prices, into a risk to reward ratio and the win rate that setup needs to break even, before and after costs. Add a win rate and it shows what the setup earns per trade — the check that exposes a high-win-rate EA with too little on each win.
Check a ratio →Drawdown and Recovery Calculator
Takes a peak and trough balance and returns the drawdown percentage plus the gain needed to climb back out. A 50% drawdown needs a 100% gain to recover, and the gap widens fast beyond that.
Check a drawdown →Prop Firm Challenge Risk Calculator
Converts a firm's published daily and overall loss limits into a per-trade risk figure, holding back a fifth of the daily allowance so a run of losses doesn't land you exactly on the line.
Size your risk →Prop Firm Drawdown Checker
Tests a backtest or live record against a firm's limits and tells you whether it would have breached them — handling static and trailing limits separately, because the same figures can pass one and fail the other.
Test a record →Signal Provider Scorer
Runs a copy trading provider's published figures through the same ten checks we apply before we will cover one, and explains what each result means.
Score a provider →Which One to Reach For
Used separately, each answers a narrow question. Used in order, they answer the one that actually matters before you switch an Expert Advisor on: how much can this account lose before the strategy stops being viable, and does the EA's risk setting respect that?
The order that works is outside-in — start with the hard constraint and work inwards.
On a prop firm challenge the constraint is written into the rules, so the Prop Firm Challenge Risk Calculator comes first. On your own capital there is no rule, so the constraint is the drawdown you are willing to sit through without switching the EA off — a decision only you can make, and one the Drawdown and Recovery Calculator will make concrete for you.
Either way, once you have a per-trade risk percentage, the Position Size Calculator turns it into a lot size for a given stop, and the Forex Profit Calculator shows what a trade at that size made or lost once it closes. Before any of that, the Risk Reward Calculator tells you whether the stop and target an EA uses can pay at the win rate it actually achieves. And once there is a track record to judge, the Prop Firm Drawdown Checker tells you whether that history would have survived a funded account.
What No Calculator Here Can Do
Nor can any of them tell you whether the figures you typed in were honest. A drawdown taken from a vendor's backtest, an account that ran several products at once, or a balance-based number hiding a far deeper equity dip will all produce a confident, precise and useless answer. How we test Expert Advisors sets out what we check before we trust a figure enough to publish it.
Frequently Asked Questions
Do these tools work for both MT4 and MT5?
Are they free, and do you store what I enter?
What's the difference between the Risk Calculator and the Drawdown Checker?
What risk per trade should I use?
Can a calculator tell me whether an EA is any good?
These tools are provided for general information and educational purposes. They are not financial advice and do not take account of your circumstances or objectives. Trading foreign exchange and CFDs carries a high level of risk and may result in the loss of your invested capital. Past performance, including backtested performance, is not indicative of future results.
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