MarketKit.tools

    About MarketKit

    MarketKit.tools is a free toolkit designed for clarity and planning. We build calculators and tools that help traders model outcomes, understand risk, and make structured decisions.

    Our Philosophy

    Trading is hard enough without guesswork. Before you enter a position, you should know your exposure, your risk, and your worst-case scenario. That's what these tools are for.

    We don't sell signals or predictions. We don't promise returns. We build utility tools that help you do the math that matters — so you can focus on execution.

    Who Built This?

    MarketKit is built by Jungle Rebounder, a platform for automated trading with enforced structure. We built these tools for ourselves first, then decided to share them freely.

    Disclaimers

    For educational purposes only

    These tools are designed to help you understand trading concepts and run calculations. They are not financial advice.

    Trading involves risk

    You can lose money trading. These tools help you understand that risk, but they don't eliminate it. Never trade more than you can afford to lose.

    Tools are approximations

    Calculations are based on the inputs you provide and simplified models. Real-world results may vary due to fees, slippage, funding rates, and market conditions. Always verify.

    MarketKit.tools

    Trading tools & calculators for structured decisions

    Model outcomes, sanity-check setups, and plan execution — without hype.

    Browse toolsView guidesTry a tool
    29tools9categories6guides
    Free to useNo signup requiredFast calculations

    Featured tools

    Curated selection of our most useful calculators

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    PerpsGrid / AveragingPosition sizingPosition Sizing / RiskRiskRisk / Position SizingAll categories

    Grid Drawdown Tool

    Calculate max exposure, capital required, and worst-case drawdown for grid/averaging strategies.

    GridRisk

    Position Size Calculator

    Calculate position size from account size, risk %, stop distance, and leverage for perpetual contracts.

    PositionRisk

    Risk of Ruin Estimator

    Estimate probability of account ruin based on win rate, risk per trade, and number of trades.

    RiskProbability

    Funding Rate Impact Tool

    Calculate how funding rates affect a leveraged position over time.

    PerpsFees

    Capital at Risk Calculator

    Calculate total capital at risk across multiple open positions including leverage.

    PortfolioRisk

    Multi-Sequence Exposure Planner

    Plan exposure across multiple grid/averaging sequences running simultaneously. Calculate total combined exposure and worst-case drawdown.

    GridPortfolio

    Learn the fundamentals

    Deep dives into trading concepts and strategies

    View all guides

    Grid strategies: what most people misunderstand

    The math behind grid trading, common pitfalls, and how to size properly.

    12 min read

    Position sizing: the only math most traders need

    How to calculate position size based on risk tolerance and stop distance.

    10 min read

    Perps basics: leverage, margin, liquidation

    A clear breakdown of perpetual contracts, how leverage works, and when you get liquidated.

    14 min read

    Risk management fundamentals

    Master the core principles of risk management. Learn how to protect your capital and survive long enough to be profitable.

    15 min read

    Leverage and margin: a complete guide

    Deep dive into leverage and margin mechanics. Learn how to calculate margin requirements and avoid liquidation.

    12 min read

    Portfolio management basics

    Learn how to manage multiple positions, calculate total exposure, and build a balanced trading portfolio.

    14 min read

    Why MarketKit exists

    Our philosophy on building tools that help, not hype

    Clarity before execution

    Know your numbers before you click. Understand exposure, risk, and worst-case scenarios.

    Tools, not predictions

    No signals, no guarantees. Just calculators to help you model what matters.

    Built to be shared

    Results are designed to be screenshot-friendly and easy to share in communities.

    Labs

    Experimental & playful tools

    View all labs
    Experimental — for exploration, not decisions

    One Bad Trade Damage Tool

    LabsNew

    Show how a single oversized loss impacts account equity and recovery requirements.

    RiskPsychology

    How Fast Do I Get Wiped?

    LabsNew

    Estimate how quickly an account can reach ruin based on leverage and risk behavior.

    RiskSimulation

    Drawdown Pain Index

    LabsNew

    Visualize emotional and capital impact of drawdowns at different percentages.

    DrawdownPsychology
    Free to use forever
    No signup required
    Fast calculations
    Built by traders

    New tools

    Latest additions to our toolkit

    View all 7 new tools

    Stop Loss Distance Calculator

    New

    Calculate optimal stop loss distance based on volatility (ATR), support/resistance levels, and risk tolerance. Essential for proper risk management.

    RiskPosition

    Take Profit Calculator

    New

    Calculate take profit levels based on risk/reward ratios, support/resistance, and position size. Find optimal profit targets for your trades.

    RiskPosition

    Win Rate Required Calculator

    New

    Calculate minimum win rate needed to be profitable given risk/reward ratio. Find break-even win rate and expected value per trade.

    RiskAnalysis

    Trade Expectancy Calculator

    New

    Calculate expected value per trade based on win rate, average win, and average loss. Find profit factor, expectancy ratio, and expected returns over time.

    RiskAnalysis

    Kelly Criterion Calculator

    New

    Calculate optimal position size using Kelly Criterion formula for long-term growth maximization. Find fractional Kelly recommendations, expected growth rate, and risk of ruin.

    PositionRisk

    Grid Profit/Loss Simulator

    New

    Simulate P&L outcomes for grid trading strategies under different price paths. Calculate profit and loss for grid strategies across multiple scenarios.

    GridScenario