Trading Developer Tools

Crypto, API, and trading bot development calculators and formatters for educational use.

Estimate trading position size from account, risk, entry, and stop values.

Estimate futures profit and loss from entry, exit, contracts, multiplier, and side.

Calculate the close time for a crypto kline or candlestick from open time and interval.

Convert crypto kline intervals such as 1m, 15m, 1h, 1d, and 1w into milliseconds and seconds.

Estimate perpetual futures funding fees from notional size and funding rate.

Estimate a simplified liquidation price from entry, leverage, side, and maintenance margin.

Calculate risk per unit, reward per unit, and risk/reward ratio from entry, stop, target, and side.

Calculate a simple Kelly fraction from assumed win rate and reward/risk ratio.

Estimate position size using account risk, ATR, ATR multiplier, and unit value.

Round a price to an exchange tick size using down, up, or nearest mode.

Round an order quantity to an exchange step size using down, up, or nearest mode.

Parse TradingView webhook alert JSON or key=value content into formatted JSON.

Disclaimer

This tool is for educational and development purposes only and is not financial advice.