Trading Calculators

How big to trade, and what a run of losses can do.

• RiskBreakeven After a LossWorks out the gain required to undo a loss of a given size.
• RiskDrawdown Recovery CalculatorWorks out the gain and the years needed to get back to a prior peak.
• RiskKelly Criterion CalculatorWorks out the fraction of capital that maximizes long-run growth.
• RiskLeverage Decay CalculatorWorks out how far a leveraged return falls short of the simple multiple.
• RiskLosing Streak CalculatorWorks out how likely a run of losses is across a number of trades.
• RiskLot Size CalculatorWorks out how many lots your risk and stop distance actually allow.
• RiskMargin Call CalculatorWorks out the price at which your broker liquidates the position.
• RiskPip Value CalculatorWorks out what one pip is worth at your position size.
• RiskPortfolio Heat CalculatorWorks out your total open risk, adjusted for how correlated the positions are.
• RiskPosition Correlation CalculatorWorks out how much diversification a set of positions actually gives you.
• RiskR Multiple CalculatorWorks out a trade's result measured in units of what it risked.
• RiskRisk of Ruin CalculatorWorks out the chance a losing run empties the account.
• RiskTick Value CalculatorWorks out what one tick is worth and how many contracts your risk allows.

Expectancy, sample size and risk-adjusted return.

• StatisticsExpectancy CalculatorWorks out the average result of one trade, in R.
• StatisticsPortfolio Beta CalculatorWorks out how much a portfolio moves when the market moves.
• StatisticsTrading Sample Size CalculatorWorks out how many trades it takes before a result means anything.
• StatisticsSharpe Ratio CalculatorWorks out return above cash, per unit of volatility.

Breakeven and payoff for option trades.

• OptionsOption Profit CalculatorWorks out what an option position is worth at expiry.
• OptionsOptions Breakeven CalculatorWorks out the underlying price at which an option position returns nothing.
• OptionsWheel Strategy CalculatorWorks out premium collected, the cash it ties up, and the price it commits you to.

Crypto buying plans, profit and mining.

• CryptoCrypto DCA CalculatorWorks out what regular fixed purchases would have been worth.
• CryptoCrypto Profit CalculatorWorks out what a trade actually returned after both fees.
• CryptoImpermanent Loss CalculatorWorks out how much less a liquidity pool is worth than simply holding.
• CryptoMining Profit CalculatorWorks out what a mining machine earns after electricity.

Growth, fees, inflation and what retirement needs.

• Investing401k Match CalculatorWorks out how much employer money your contribution rate actually captures.
• InvestingCompound Growth CalculatorWorks out what regular contributions become over a long horizon.
• InvestingDCA vs Lump Sum CalculatorWorks out the gap between investing it all now and spreading it out.
• InvestingDividend Income CalculatorWorks out what a portfolio pays at a given yield, and the capital a target needs.
• InvestingFee Drag CalculatorWorks out what an annual charge removes from a pot over decades.
• InvestingReal Return CalculatorWorks out what a return is worth after inflation.
• InvestingMillionaire CalculatorWorks out how long a monthly contribution takes to reach a target.
• InvestingRebalancing CalculatorWorks out how far a holding has drifted and what it takes to correct it.
• InvestingRetirement Number CalculatorWorks out the capital your spending implies, and how long it takes to get there.
• InvestingRoth IRA Growth CalculatorWorks out what annual contributions become, and how much of it is untaxed growth.

Mortgage payments and rental returns.

• PropertyCash-on-Cash Return CalculatorWorks out the annual cash a property returns on the cash you put in.
• PropertyMortgage Payment CalculatorWorks out the monthly payment and the total interest over the term.
• PropertyRental Yield CalculatorWorks out annual rent as a percentage of a property's price, net of costs.

Currency conversion, carry and trading hours.

• MarketsCurrency ConverterWorks out what you actually receive after a provider's margin.
• MarketsSwap and Carry CalculatorWorks out what holding a position overnight pays or costs.
• MarketsTrading Session ClockWorks out when each market opens in your own local time.

• More calculatorsDebt Snowball vs Avalanche CalculatorWorks out months to debt-free and total interest for three debts paid off smallest-balance-first (snowball) and highest-rate-first (avalanche).
• More calculatorsIf You Invested $1,000 in Amazon 10 Years AgoWorks out what $1,000 put into Amazon stock 1, 5 and 10 years ago was worth on 12 October 2026, and how long the stock went without a new high.
• More calculatorsIf You Invested $1,000 in Apple 10 Years AgoWorks out what $1,000 put into Apple stock 1, 5 and 10 years ago was worth on 12 October 2026, with and without its dividends.
• More calculatorsIf You Invested $1,000 in Bitcoin 10 Years AgoWorks out what $1,000 put into bitcoin 1, 5 and 10 years ago, or on the first day of Yahoo's data, was worth on 12 October 2026.
• More calculatorsIf You Invested $1,000 in Dogecoin in 2017Works out what $1,000 put into Dogecoin on 9 November 2017, 5 years ago and 1 year ago was worth on 12 October 2026, and what it was worth at the May 2021 peak.
• More calculatorsIf You Invested $1,000 in Ethereum in 2017Works out what $1,000 put into ether, Ethereum's coin, on 9 November 2017, 5 years ago and 1 year ago was worth on 12 October 2026, next to the same money in bitcoin.
• More calculatorsIf You Invested $1,000 in Google 10 Years AgoWorks out what $1,000 put into Alphabet (Google) class A stock 1, 5 and 10 years ago was worth on 12 October 2026.
• More calculatorsIf You Invested $1,000 in Meta 10 Years AgoWorks out what $1,000 put into Meta (Facebook) stock 1, 5 and 10 years ago was worth on 12 October 2026, and what its 2022 fall did to that money.
• More calculatorsIf You Invested $1,000 in Microsoft 10 Years AgoWorks out what $1,000 put into Microsoft stock 1, 5 and 10 years ago was worth on 12 October 2026, with and without dividends, and how each year compared with the S&P 500.
• More calculatorsIf You Invested $1,000 in Nvidia 10 Years AgoWorks out what $1,000 put into Nvidia stock 1, 5 and 10 years ago was worth on 12 October 2026.
• More calculatorsIf You Invested $1,000 in Solana in 2020Works out what $1,000 put into Solana's coin SOL on 10 April 2020, 5 years ago and 1 year ago was worth on 12 October 2026, and how deep its falls went.
• More calculatorsIf You Invested $1,000 in Tesla 10 Years AgoWorks out what $1,000 put into Tesla stock 1, 5 and 10 years ago was worth on 12 October 2026, and what it was worth for a buyer on any single day of the decade.
• More calculatorsIf You Invested $1,000 in the S&P 500 10 Years AgoWorks out what $1,000 put into SPY, a fund that tracks the S&P 500, 1, 5 and 10 years ago was worth on 12 October 2026, and how every one-year hold inside that decade turned out.
• More calculatorsIf You Invested $1,000 in TRUMP Coin at LaunchWorks out what $1,000 put into the $TRUMP meme coin at its first full-day close (18 January 2025) and one year ago was worth on 12 October 2026.