Free trading and economic tools
Calculators and data tools for people who actually trade and follow markets. No signup, no paywall, no metered page views.
- Every tool shows the formula it uses
- Every data source is named and linked
- Calculations run in your browser
Economic calendar
Every market-moving release, with the expected direction, a countdown and reminders you can export to your own calendar.
MacroUS inflation calculator
What any dollar amount since 1913 is worth today, from official BLS consumer price index data, with the purchasing-power view and the compound annual rate.
In progress
These are being built now. They are listed here without links until they actually work.
Position size calculator
Risk-based lot sizing across forex, metals, oil, indices and crypto, with account-currency conversion and broker contract conventions.
Risk of ruin simulator
Monte Carlo equity curves from your win rate, risk per trade and reward-to-risk, showing drawdown distribution and probability of ruin.
COT positioning dashboard
Weekly CFTC Commitments of Traders positioning across currencies, metals, energy, rates and equity indices, with history back to 1986.
How these tools are built
Every calculator states the formula behind it and works through a real example, so you can check the arithmetic instead of trusting a black box. Where a tool uses data, the provider is named and linked on the page, along with how current that data is.
Wherever the maths allows, calculations happen entirely in your browser. Nothing you type is sent to a server or stored, so you can size a position without handing over your account balance.
These tools are for information and education. They are not financial advice and not a recommendation to buy or sell anything. Trading carries risk, including losing more than you put in. Maintained byJoey van Diest; corrections to[email protected].