trading tool
Step Size Quantity Formatter
Format crypto order quantities for exchange API rules and bot order validation.
Paste data here. It stays in your browser.
Copy-ready result appears here.
How it works
- Divides quantity by step size.
- Rounds with the selected mode.
- Formats the quantity to step precision.
Common use cases
- Avoid exchange quantity precision errors.
- Prepare bot order payloads.
- Normalize backtest fills.
Code example
roundedQty = Math.floor(quantity / stepSize) * stepSizeQuantity precision
Step size controls the allowed quantity increment for a symbol. Bots should format quantities before creating orders.
Exchange rules
Step size is only one filter. Exchanges may also enforce minimum notional, minimum quantity, maximum quantity, and market-specific constraints.
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.