Free trading calculators
Every one of them runs in your browser, needs no account and never sends your numbers anywhere. Each ends with the same question: this is the plan — what did you actually do?
Risk and position sizing
ATR Position Size Calculator
Size a position from the Average True Range so the stop sits outside normal movement and the money at risk stays constant across conditions.
Correlation Risk Calculator
Work out the combined risk of two correlated positions, compared against simply adding them and against treating them as independent.
Daily Loss Limit Calculator
Work out your daily and weekly loss limits, how much room remains after today's losses, and how many full-size trades that allows.
Drawdown Recovery Calculator
Losing 50% needs a 100% gain to get back. Enter any drawdown and see the exact gain required, in percent, in money, and in winning trades.
Hedge Ratio Calculator
Work out the size of the hedging position needed to offset an exposure, adjusted for beta, with the residual left by rounding to whole contracts.
Losing Streak Calculator
Work out how many consecutive losses it takes to halve an account at your risk per trade, and how likely such a streak is at your win rate.
Martingale Calculator
See the capital a martingale sequence needs to survive a losing streak, the size of the final position, and how far down the sequence your balance really reaches.
Partial Exit Calculator
Work out what a partial exit locks in, what the worst case becomes afterwards, and how much of the full-target result you gave up to get it.
Position Size Calculator
Work out how many units to trade so a stop-loss costs you a fixed percentage of your account. Free, instant, nothing leaves your browser.
Pyramiding Calculator
Work out the average entry, total size and money at risk after adding to a winning position, compared against the risk you started with.
Risk/Reward Ratio Calculator
Enter entry, stop and target to get the risk/reward ratio, the distance to each, and the win rate that ratio needs just to break even.
Stop Loss and Take Profit Calculator
Turn a percentage stop and target into actual prices, with the risk/reward ratio and the win rate that ratio demands, for long or short positions.
Options
Black-Scholes Calculator
Price a European call and put with the Black-Scholes model, including dividend yield, with the put-call parity check and the probability of finishing in the money.
Covered Call Calculator
Work out both returns on a covered call — the premium if the option expires worthless and the total if the shares are called away — plus the annualised figure.
Expected Move Calculator
Turn implied volatility and days to expiry into the one-standard-deviation move, the ranges it implies, and how many deviations away any strike sits.
Iron Condor Calculator
Enter four strikes and the credit to get the profit zone, the maximum loss on the wider wing, and the win rate the risk-reward actually demands.
IV Rank Calculator
Work out IV rank from the current implied volatility and its 52-week range, and IV percentile from the days it spent lower — two different measures.
Options Greeks Calculator
Calculate delta, gamma, theta, vega and rho for a European option, in the units a position actually moves in rather than the model's raw annualised ones.
Options Profit Calculator
Work out the profit or loss on a call or put at expiry, bought or sold, with the break-even price and the maximum gain and loss for that position.
Vertical Spread Calculator
Work out the maximum loss, maximum profit and break-even of a vertical call or put spread, with the win rate that risk-reward actually requires.
Wheel Strategy Calculator
Work out the return on a cash-secured put, your effective cost if assigned, and the full wheel cycle return if the shares are then called away.
Performance and statistics
Break-Even Win Rate Calculator
Find the win rate a risk/reward ratio needs just to break even, and how much extra win rate your trading costs quietly demand on top.
Compounding Calculator
Project a balance forward at a fixed return per period, with optional deposits, and see how much of the result is compounding rather than contributions.
Kelly Criterion Calculator
Work out the Kelly fraction from your win rate and average win and loss, with the half and quarter sizes practitioners actually use.
Max Drawdown Calculator
Enter your balance at the end of each period to find the largest peak-to-trough fall, in percent and in money, with the gain needed to recover it.
Monte Carlo Simulator
Run 2,000 simulated sequences of your strategy to see the range of outcomes, the median worst drawdown, and how often the same edge finishes down.
Profit Factor Calculator
Divide gross profit by gross loss to get profit factor, with the average trade, the net result and a warning when the sample is too small to mean anything.
R-Multiple Calculator
Enter entry, initial stop and exit to get the trade's R-multiple. Add the planned target to see the gap between the trade you designed and the trade you took.
Risk of Ruin Calculator
Simulate thousands of trade sequences at your win rate and sizing to find the probability of losing a chosen share of the account at some point.
Sharpe Ratio Calculator
Calculate the annualised Sharpe ratio from your return and volatility per period, net of the risk-free rate, with a reading of what the result means.
Sortino Ratio Calculator
Calculate the annualised Sortino ratio using downside deviation only, so upside volatility stops counting against the strategy.
Trading Expectancy Calculator
Enter win rate, average win and average loss to get expectancy per trade. Add your sample size and the page shows the honest range that number sits in.
Win Rate Calculator
Work out your win rate from wins and losses, with and without break-even trades, and compare it against the rate your reward-to-risk actually requires.
Stocks and investing
CAGR Calculator
Work out the compound annual growth rate between two values, compare it against a benchmark, and see how long doubling would take at that rate.
Dividend Yield Calculator
Work out dividend yield, yield on your own cost, annual and quarterly income, and the payout ratio that says whether the dividend is affordable.
DRIP Calculator
Project a dividend reinvestment plan forward and compare it directly against taking the dividends as cash, with the share count and final-year income.
P/E Ratio Calculator
Calculate the price-to-earnings ratio, the forward P/E, the earnings yield and the PEG ratio that puts a valuation next to the growth being paid for.
Portfolio Rebalance Calculator
Enter three positions and your target weights to get the exact amount to buy or sell in each, with the drift that has built up since you last looked.
Stock Average Down Calculator
Work out your new cost basis after buying more shares, how far the average moved, and what the price must do from here for the position to break even.
Stock Position Size Calculator
Work out how many shares to buy so a stop costs a fixed percentage of your account, rounded to whole shares, with the risk you actually end up taking.
Stock Profit Calculator
Work out the profit on a share trade including dividends and commission, the return on cost, and what that return looks like annualised.
Crypto
Cross vs Isolated Margin Calculator
Compare the liquidation price and the maximum loss of the same crypto position under isolated and cross margin, side by side.
Crypto Average Entry Calculator
Work out your average entry price across up to three fills, with the exchange fee applied to each one separately, and see what the fees added to your basis.
Crypto Position Size Calculator
Work out how many coins to buy so a stop costs a fixed share of the account, and check that the stop sits closer than the exchange's liquidation price.
Crypto Profit Calculator
Work out the profit on a leveraged crypto trade net of taker fees, and see the price move next to the return-on-margin figure that exchanges display.
DCA Calculator
Model a dollar-cost averaging plan and compare it directly against a single lump-sum purchase at the starting price, with the average cost achieved.
Funding Rate Calculator
Work out what funding a crypto perpetual position pays or receives over any holding period, with the annualised rate that makes the number legible.
Grid Trading Calculator
Work out the grid step, the profit each completed grid produces net of fees, and what share of that profit the exchange takes.
Liquidation Price Calculator
Work out where a leveraged crypto position gets liquidated, how far that is in percent, and why fees make the real level slightly closer than the formula says.
Converters
Futures
Day vs Overnight Margin Calculator
Compare intraday and overnight futures margin to see how many contracts you may hold in each, and whether your position survives the close.
Futures Margin Calculator
Work out the margin a futures position requires, how much of the account it locks up, and how far price can move against you before a margin call.
Futures Position Size Calculator
Work out how many futures contracts a stop allows at your risk percentage, with the risk you actually take after rounding and the budget left unused.
Futures Profit Calculator
Work out the result of a futures trade from entry, exit and contract multiplier, net of round-trip fees, with the move needed just to cover them.
Futures Tick Value Calculator
Turn tick size and contract multiplier into the money a single tick is worth, for one contract or for the whole position, and convert a move into a result.
Micro vs Standard Futures Calculator
Compare how many micro and standard futures contracts a given risk budget allows, and how much of that budget each choice leaves unused.
Behaviour and execution
Discipline Check
Load your statement and get six separate discipline checks, each with its threshold written next to the result — instead of one weighted number that cannot be argued with.
Intent vs Execution
Your MetaTrader statement stores the stop and target you set, not just the outcome. This compares the two and prices the gap, in your browser, without an account.
Luck or Skill
Load your statement and see whether your average trade is far enough above zero to be told apart from a good run — and how many trades it would take to settle it.
What If You Removed Your Worst Trades
Load your statement to see what removing your worst trades would do — next to what removing your best ones would do. The second column is the one that answers the question.
What Overtrading Costs You
Drop in your broker statement and see whether your high-volume days actually finished worse than your quiet ones, and by how much. Reads the file in your browser, no account needed.
What Revenge Trading Costs You
Load your statement and see what your trades taken straight after a loss actually returned, compared with trades after an equally bad loss where you waited. Read in your browser, no account.
Forex and CFD
Fibonacci Calculator
Calculate Fibonacci retracement and extension levels from a swing high and low, in either direction, including the 50% level that is not a Fibonacci ratio.
Forex Profit Calculator
Work out the profit or loss on a forex position from entry, exit and size, converted to your account currency and net of the costs most calculators ignore.
Leverage Calculator
Work out the leverage you are actually using across open positions, and the size of the move that would remove the account.
Margin Calculator
Work out the margin a position requires at your leverage, what share of the account it locks up, and how much free margin is left afterwards.
Margin Call Calculator
Work out your margin level, the equity at which a margin call and a stop-out occur, and how many pips of adverse movement sit between you and each.
Pip Value Calculator
Work out what a single pip is worth for your position size and account currency, and see the number for 10 and 100 pips at the same time.
Pivot Point Calculator
Calculate daily pivot points and support and resistance levels using three methods from the same high, low and close.
Spread Cost Calculator
Work out what the spread and commission cost per trade, per month and per year, and what fraction of your own risk that represents.
Swap Calculator
Work out what holding a forex position overnight costs or pays, across any number of nights, with the triple-swap day included.
Trade Break-Even Calculator
Work out the exact price at which an open position returns to zero after spread, commission and accrued swap — not the price you entered at.