trading tool
Candle Close Time Calculator
Compute candle close times for exchange APIs, trading bots, and backtesting utilities.
Paste data here. It stays in your browser.
Copy-ready result appears here.
How it works
- Parses an ISO open time.
- Converts the kline interval to milliseconds.
- Adds the interval to get the estimated close time.
Common use cases
- Align trading bot polling.
- Debug exchange kline timestamps.
- Prepare backtest candle windows.
Candle timing for bots
Many crypto bots need to know when a candle is expected to close before requesting the next kline or evaluating a strategy rule. This tool adds the interval duration to the candle open time.
Exchange caution
Check the exchange API documentation for exact candle boundary behavior. Some systems represent close time as the next open time, while others use the last millisecond inside the candle.
FAQ
Is my input uploaded?
No. This MVP runs tool logic in your browser and does not send tool input to a server.
Can I use this on mobile?
Yes. Pages are mobile-first and designed for quick copy, paste, and share workflows.
Does the tool store history?
No. The MVP does not store tool input history or create user accounts.
Should I verify important output?
Yes. These tools are designed for productivity, but production changes and financial decisions should be independently verified.
Can the tool run after the page loads?
Yes. The interactive logic runs in the browser once the static page and JavaScript island are loaded.
What input format should I use?
Use the examples on the page as a starting point, then replace them with your own local input.
Is this financial advice?
No. Trading calculators are educational risk-management helpers and do not recommend trades or promise outcomes.
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Disclaimer
This tool is for educational and development purposes only and is not financial advice.