Trade & account math, done in your browser.
Fast calculators for the numbers traders and funded-account traders actually look up — sizing a position, what gain reverses a loss, where stops and targets sit, crypto P&L and liquidation, and the prop-firm rules people fail on. No login, nothing uploaded, none of it advice.
Prop firm
Prop Firm Calculator — FTMO, Topstep, Apex & Lucid
Compare FTMO, Topstep, Apex, Lucid and FundedNext rules — both CFD challenges and futures combines — and simulate your pass probability, trailing drawdown and payout odds.
Trailing Drawdown Calculator (Intraday vs End-of-Day)
Track your prop account's liquidation line under both intraday and end-of-day trailing drawdown, and see how close each one puts you to blowing up.
Consistency Rule Calculator
Check whether your best day is within a prop firm's consistency limit, and find the minimum total profit you need before a payout is allowed.
Trading
Loss Recovery / Break-Even Calculator
Enter how far your position is down and see the exact percentage gain required to climb back to break even.
Average Down / Cost Basis Calculator
Add every purchase — share counts, prices and fees — and get your blended average cost and the price you break even at.
Target Break-Even Calculator
Pick the break-even price you want and see how many more shares it takes to get there — and how much bigger your position becomes.
Position Size Calculator
Decide how much you'll risk and the calculator works backwards to the number of shares, units or contracts that keeps that risk fixed.
Risk/Reward Ratio Calculator
Enter entry, stop and target to get the risk-reward ratio and the minimum win rate that ratio needs to break even.
Stop-Loss & Take-Profit Calculator
Convert your stop-loss and take-profit percentages into actual price levels for long or short trades, with the dollar risk and reward at each.
DCA (Dollar-Cost Average) Calculator
Enter each fixed contribution and the price it bought at to see the total units accumulated and your blended average cost.
Break-Even After Fees Calculator
Fees hit on both sides of a trade.
Pairs Trading Calculator
Find the hedge ratio that makes two legs dollar-neutral, read the spread z-score to time entries and exits, and split capital across both legs — backed by a live cointegration scanner that ranks how every instrument pairs with the one you want to trade.
Investing
Investment Calculator (Monthly Contributions + Compounding)
Project what a regular monthly investment could grow to.
Structured Product Payoff Calculator
See what a structured note pays back at maturity for a given final level of its underlying.
长期定投计算器：按资产权重估算未来收益
输入每月定投金额、年限、资产权重和历史年化假设，快速看到未来余额、累计本金、收益、实际购买力和年度路径。默认组合包含 Nasdaq、SPY、沪深300、恒生科技；所有数字都可以手动改。.
Crypto
Crypto Profit / Loss Calculator
Calculate the profit or loss on a long or short crypto trade, including leverage and fees, and see it as return on your margin (ROE).
Liquidation Price Calculator
Estimate the price at which a leveraged long or short position would be liquidated, from your entry, leverage and maintenance margin.
Information tool only — not investment, trading, tax, or financial advice. All computation runs in your browser.