Trading Journal Analyzer
Calculate trading journal with our free Trading journal Calculator. Compare rates, see projections, and make informed financial decisions.
Calculator
Adjust values & calculateFormula
Expectancy is the average expected profit per trade. Profit Factor = Gross Profits / Gross Losses. Kelly% = Win Rate - (Loss Rate / Risk-Reward Ratio). These metrics together reveal whether a trading strategy has a statistical edge and the optimal position size.
Last reviewed: December 2025
Worked Examples
Example 1: Swing Trader Monthly Review
Example 2: Scalper Performance Analysis
Background & Theory
The Trading Journal Analyzer applies the following established principles and formulas. Foreign exchange markets facilitate the conversion of one currency into another and serve as the largest and most liquid financial markets in the world, with daily turnover exceeding seven trillion US dollars. Exchange rates are quoted as currency pairs, expressing the price of one unit of a base currency in terms of a quote currency. For example, a EUR/USD rate of 1.0850 means one euro buys 1.0850 US dollars. The smallest standardized price movement in most pairs is the pip, typically the fourth decimal place, with a value of 0.0001 per unit for USD-denominated pairs. The bid price is the rate at which a dealer will buy the base currency, while the ask price is the rate at which it will sell. The spread between bid and ask represents the dealer's compensation and varies with liquidity and volatility. Leverage amplifies both gains and losses by allowing traders to control positions larger than their deposited margin. A 100:1 leverage ratio means a one-percent adverse move eliminates the entire margin, making position sizing and risk management critical. Two parity conditions from international economics anchor exchange rate theory. Purchasing Power Parity (PPP) holds that exchange rates should adjust over time so that identical goods trade at equivalent prices across countries: S = P_d / P_f, where S is the spot rate and P_d and P_f are domestic and foreign price levels. PPP performs well over long horizons but poorly in the short run due to trade barriers, non-tradable goods, and capital flows. Covered Interest Rate Parity (CIRP) is a near-arbitrage condition stating that forward exchange rate premiums or discounts exactly offset interest rate differentials between two currencies: F/S = (1 + r_d) / (1 + r_f). Deviations from CIRP create riskless arbitrage opportunities that traders rapidly eliminate. Uncovered Interest Rate Parity posits that high-yielding currencies should depreciate to offset their interest advantage, though empirical evidence is mixed and the carry trade — borrowing in low-rate currencies to invest in high-rate ones — has generated persistent returns.
History
The history behind the Trading Journal Analyzer traces back through the following developments. For much of the nineteenth century and early twentieth century, the international monetary system operated under the classical gold standard, under which each participating currency was fixed to a defined weight of gold, making bilateral exchange rates effectively constant. The system provided price stability and facilitated global trade but constrained governments' ability to respond to economic downturns. World War One shattered the gold standard as nations suspended convertibility to finance wartime expenditures. The interwar period saw attempts to restore gold convertibility, most notably the British return to the gold standard in 1925 at the pre-war parity, a decision criticized by John Maynard Keynes as deflationary. The Great Depression forced widespread currency devaluations and the effective collapse of the international gold standard by the early 1930s. The Bretton Woods Conference of July 1944 established a new order in which member currencies were pegged to the US dollar, while the dollar alone was convertible into gold at 35 dollars per troy ounce. The International Monetary Fund and World Bank were created at the same conference to oversee the system. Bretton Woods delivered exchange rate stability during the postwar growth era but came under strain as US deficits and European dollar accumulation outpaced American gold reserves. On August 15, 1971, President Nixon announced the suspension of dollar-gold convertibility — the so-called Nixon Shock — effectively ending the Bretton Woods system. By 1973, major currencies had transitioned to floating exchange rates determined by market supply and demand, a regime that has persisted. On September 16, 1992, hedge fund manager George Soros shorted the British pound against the European Exchange Rate Mechanism constraints, forcing the UK's withdrawal in what became known as Black Wednesday. Electronic trading platforms emerged in the 1990s and 2000s, replacing voice-brokered interbank markets and dramatically reducing transaction costs for institutional and retail participants alike.
Frequently Asked Questions
Sources & References
Formula
Expectancy = (Win% x Avg Win) - (Loss% x Avg Loss)
Expectancy is the average expected profit per trade. Profit Factor = Gross Profits / Gross Losses. Kelly% = Win Rate - (Loss Rate / Risk-Reward Ratio). These metrics together reveal whether a trading strategy has a statistical edge and the optimal position size.
Worked Examples
Example 1: Swing Trader Monthly Review
Problem: A swing trader completed 80 trades this month: 48 winners with $200 average win, 32 losers with $120 average loss. Starting balance was $25,000. Max consecutive losses: 4.
Solution: Win rate = 48/80 = 60%\nTotal profit = (48 x $200) - (32 x $120) = $9,600 - $3,840 = $5,760\nProfit factor = $9,600 / $3,840 = 2.50\nRisk-reward ratio = $200 / $120 = 1.67\nExpectancy = (0.60 x $200) - (0.40 x $120) = $120 - $48 = $72 per trade\nMax drawdown = 4 x $120 = $480 (1.9% of account)\nKelly = 60% - (40% / 1.67) = 36.0%
Result: Net Profit: $5,760 (23%) | Expectancy: $72/trade | Profit Factor: 2.50 | Kelly: 36%
Example 2: Scalper Performance Analysis
Problem: A scalper made 500 trades: 325 winners averaging $30, 175 losers averaging $50. Starting balance $5,000. Max consecutive losses: 8.
Solution: Win rate = 325/500 = 65%\nTotal profit = (325 x $30) - (175 x $50) = $9,750 - $8,750 = $1,000\nProfit factor = $9,750 / $8,750 = 1.11\nRisk-reward = $30 / $50 = 0.60\nExpectancy = (0.65 x $30) - (0.35 x $50) = $19.50 - $17.50 = $2.00 per trade\nMax drawdown = 8 x $50 = $400 (8% of account)\nKelly = 65% - (35% / 0.60) = 6.7%
Result: Net Profit: $1,000 (20%) | Expectancy: $2/trade | Profit Factor: 1.11 | Kelly: 6.7%
Frequently Asked Questions
What is expectancy in trading and why is it important?
Expectancy is the average amount you can expect to win or lose per trade over a large sample. It is calculated as (Win Rate x Average Win) minus (Loss Rate x Average Loss). A positive expectancy means your trading system is profitable over time, while a negative expectancy means you are losing money. For example, if you win 55 percent of trades with an average win of $150 and lose 45 percent with an average loss of $100, your expectancy is (0.55 x 150) - (0.45 x 100) = $37.50 per trade. This single number summarizes whether your strategy has a statistical edge and is arguably the most important metric in any trading journal analysis.
How does leverage work in forex trading?
Leverage lets you control a larger position with a smaller deposit (margin). At 100:1 leverage you control $100,000 with $1,000 margin. While leverage amplifies profits, it equally amplifies losses and can lead to margin calls if the market moves against you.
What is the spread and how does it affect trading costs?
The spread is the difference between the bid and ask price of a currency pair, measured in pips. It represents the broker's fee on each trade. Major pairs like EUR/USD typically have tighter spreads (0.5-2 pips) than exotic pairs (5-20 pips).
What inputs do I need to use Trading Journal Analyzer accurately?
Each field is labelled with the required unit (metric or imperial). Gather your source values before starting — for example, a weight measurement in kilograms, a distance in metres, or a dollar amount — and enter them exactly as measured. The formula section on this page lists every variable and explains what each represents.
How accurate are the results from Trading Journal Analyzer?
All calculations use established mathematical formulas and are performed with high-precision arithmetic. Results are accurate to the precision shown. For critical decisions in finance, medicine, or engineering, always verify results with a qualified professional.
Is my data stored or sent to a server?
No. All calculations run entirely in your browser using JavaScript. No data you enter is ever transmitted to any server or stored anywhere. Your inputs remain completely private.
References
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy