Free calculators and analytics
for forex and EA trading

Lot sizing, margin, backtest analysis and risk checks.
Confirm every decision before you go live — no sign-up required.

  • No registration
  • Free to use
  • Runs in your browser
Choose a tool by goal See popular tools

What would you like to check?

Pick the tool that matches your goal to make the right call.

All tools

Filter by category to find the tool you need.

Lot CalculatorPopularAuto-calculate proper lot from balance, risk, and SL. Three reverse modes. Open Margin CalculatorInstantly calculate required margin, liquidation line, and max lot. Open Profit CalculatorCalculate P/L in currency and pips from entry/exit prices and lot Open Pips ConverterPopularReal-time pips ⇔ P/L conversion. Includes quick reference table. Open Compound CalculatorVisualize asset growth by monthly return × period. Reverse calc & simple interest comparison. Open Swap CalculatorCalculate swap profit/loss from holding days and lot Open Risk/Reward CalculatorPopularRR ratio, expected value + Balsara ruin probability heatmap. Open Drawdown Recovery CalculatorRecovery profit % + recovery period simulation + chart. Open Kelly Criterion CalculatorCalculate optimal risk % from win rate and R:R Open Monte Carlo SimulatorVisualize equity curves with 1,000 simulations Open Backtest analyzerFeaturedAnalyse MT4/MT5 reports and visualise the equity curve and key metrics. Open Correlation matrixView correlation coefficients of major pairs as a heat map. Open Currency Strength MeterVisualize relative strength of 8 major currencies Open EA builderFeaturedBuild MT4/MT5 EAs without code and export MQL source. Open
MQL4 to MQL5 converterComing SoonConvert MQL4 source code to MQL5 automatically. Coming Soon
Indicator builderComing SoonDesign custom indicators without writing code. Coming Soon
Fibonacci CalculatorCalculate retracement & extension levels from high/low Open Pivot Point CalculatorCalculate support/resistance from previous day OHLC Open FX Session ClockReal-time Tokyo/London/NY session display Open Indicator libraryDownload free indicators for MT4 and MT5. Open

From analysis to live trading

Combining these tools leads to safer, more rational operation.

  1. 1 Analyse performance Check the trend with the backtest analyzer
  2. 2 Set your risk Drawdown, Monte Carlo and lot sizing
  3. 3 Choose or build an EA Go to the EA list or the EA builder
  4. 4 Verify before going live Check margin, correlation and required capital

Why you can use these tools with confidence

No account needed

No registration or login. Every calculator is available right now.

Calculations run in your browser

Inputs for the calculators and the reports you load into the backtest analyzer are processed on your device and are not sent to our servers.

Formulas shown with the results

We show the formula and the breakdown alongside the numbers so you can act on a result you understand.

Note: only when you use the automatic rate lookup is the currency pair name sent to an external rate provider. The EA builder and the MQL converter process data on the server in order to save and convert your project.

How to choose a forex calculator

Consistent results start with the risk maths you do before you enter. Size the position, confirm the expectancy, then test how durable the strategy is — in that order.

Beginner

Start with these two

Keeping the amount at risk per trade to 1-2% of your balance is the first step to surviving long term. Size the lot, then check that expectancy is positive.

  • Lot Calculator
  • Risk/Reward Calculator
Intermediate and up

Measure how durable the strategy is

Stress-test the strategy with Monte Carlo, confirm the optimal bet size with the Kelly criterion, and check portfolio bias with the correlation matrix.

  • Monte Carlo Simulator
  • Kelly Criterion Calculator
  • Correlation matrix

Pre-trade checklist

Run these three before you enter and you decide by numbers rather than by feel.

  1. 1

    Set the lot size

    Work out the position you can hold from your balance and your risk tolerance.

    Open the tool
  2. 2

    Confirm the expectancy

    Aim for an R:R of 1:2 or better, then combine it with your win rate to confirm positive expectancy.

    Open the tool
  3. 3

    Check the margin

    Review the required margin and margin level so you know where the stop-out sits.

    Open the tool

Why money management tools matter

Surviving long term depends on money management at least as much as on technical analysis. Whatever the method, too much risk per trade means a short losing streak can end the account.

Size with the lot calculator, confirm expectancy with risk-reward, and test robustness with Monte Carlo. Deciding on numbers rather than on instinct is what traders who last have in common.

Numbers checked? Now find the EA that fits you.

Once the tools have set your foundation, find the EA that suits your style.
Use the free EAs and the rankings to compare efficiently.

Browse free EAs View the rankings
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