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    By Volodymyr Kravchenko Updated

    Calculators ยท Calendar ยท Platforms

    Trading Tools

    Calculators, a release calendar and platform guides โ€” the tools behind every trade.

    Marlin's free trading tools are calculators for position size, risk, expectancy and prop firm drawdown and lot size, an economic calendar with official release times, and platform guides. The calculators work from your own inputs and show their formulas. Nothing here is a trading signal.

    Start with the question you have. How big should this position be? Use the position size or risk calculator. How much room is left on a funded account? Use the drawdown calculator, which applies each firm's published formula. What could move the market this week? Check the economic calendar before you trade, and the prop firm news rules if you trade a funded account. All tools are free, run in your browser and store nothing. They are educational and are not advice.

    Size the risk

    Risk Calculator

    Position size from balance and stop distance.

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    Position Size Calculator

    Lots for forex, gold and oil, editable contracts.

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    Expectancy & Challenge Odds

    Win rate, reward:risk, losing streaks, pass odds.

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    Funded accounts

    Prop Firm Drawdown Calculator

    Room left before daily and max loss limits.

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    Prop Firm Lot Size Calculator

    Lot size checked against your loss limits.

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    Challenge Cost Calculator

    Expected fees to pass, from your own numbers.

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    Prop Firm News Trading Rules

    What each firm allows around high-impact news.

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    Oil tools

    Oil to Gas Price Calculator

    A gallon of gasoline at $100 or $200 oil.

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    Oil Barrel Converter

    Barrels to litres, gallons and tonnes.

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    WTI Position Size (Funded Account)

    Lots from your risk % and the daily loss limit.

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    Marlin Today

    Your windows, sessions, loss allowance and checklist in one screen.

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    Prop Firm News Window Checker

    Next releases and the news window FTMO and FundingPips describe.

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    Oil Trading Hours

    WTI and Brent hours in your time zone.

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    Markets & platforms

    Economic Calendar

    NFP, CPI, FOMC, GDP, PCE and EIA times.

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    Market Dashboard

    Sessions and live third-party quotes in one view.

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    Prop Challenge Tracker

    Free Notion/CSV tracker for limits and a trade journal.

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    My Trading System

    A private nine-step plan: why you trade, energy, rules, risk and calendar.

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    Trading Journal

    A private log: why you entered, direction, trigger and news.

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    Strategy Validation Checklist

    Five stages to test a strategy and where 1:2, 1:3, 1:4 targets sit.

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    Trading Plan Example

    One written plan, section by section: rules, risk limits, days and a news rule.

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    Trade Gate

    No stop, no trade: 1% per trade, day and week limits, 2 trades a day.

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    Turkey Test

    Stress-test your own trades against a loss you have not had.

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    TradingView Guide

    Charts, indicators and alerts for gold and forex.

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