How to Change the Default Order Quantity on Bybit for Faster Futures Trading?

Accessing the Order Quantity Settings

1. Log into your Bybit account via desktop web interface or the official desktop application — mobile app settings do not support full customization of default order quantity for futures.

2. Navigate to the Futures trading interface and select the desired contract, such as BTCUSDT or ETHUSDT perpetual.

3. Click the gear icon located in the upper-right corner of the order entry panel — this opens the trading panel configuration menu.

4. Scroll down to the “Order Settings” section where “Default Order Quantity” is listed as a configurable field.

5. Input your preferred base quantity — this value will apply across all new orders unless manually overridden per trade.

Understanding Quantity Units and Contract Specifications

1. Bybit displays order quantity in two modes: “Contracts” (number of contracts) or “USD Value” (notional size), depending on the selected display unit in the same settings menu.

2. For inverse perpetual contracts like BTCUSD, quantity is expressed in USD face value, while for linear contracts like BTCUSDT, it is shown in number of contracts or USDT-denominated notional.

3. Each contract has a fixed multiplier — BTCUSDT uses 1 USD multiplier, meaning one contract equals 1 USDT of notional exposure at entry price.

4. Entering “10” with “Contracts” mode enabled places an order for 10 contracts; entering “10” with “USD Value” mode places an order worth $10 at current mark price.

5. Misalignment between selected unit and mental model causes frequent execution errors — traders must verify unit selection before saving changes.

Preserving Custom Defaults Across Sessions

1. Saved default quantity settings persist across browser sessions if login remains active and cache is not cleared.

2. Using private browsing mode or incognito windows resets these preferences upon exit — no local storage retention occurs.

3. Settings are tied to individual account IDs, not devices — logging in from another machine applies the same defaults if previously saved.

4. Changing API keys or switching between demo and real accounts does not carry over the setting — each environment stores its own defaults independently.

5. A red warning banner appears when attempting to set a default quantity below the exchange’s minimum order size for that instrument — this prevents invalid submissions at the protocol level.

Impact on Order Execution Speed and UI Responsiveness

1. Predefined quantity reduces keystrokes and eliminates manual input lag during volatile price action — especially critical during liquidation cascades or flash crashes.

2. The system bypasses dynamic quantity validation on every keypress when a static default is applied, shaving ~120–180ms off average order submission latency.

3. Default values populate instantly in both limit and market order fields, enabling one-click execution when combined with preset price offsets.

4. Traders using hotkey setups report up to 37% faster order cycle time when default quantity is aligned with their position sizing logic.

5. Overriding the default mid-trade still functions without delay — the field remains editable and responsive even after initial auto-fill.

Common Questions and Answers

Q: Does changing the default order quantity affect stop-loss or take-profit order presets?A: No. Stop-loss and take-profit quantities inherit the main order’s size only at submission time — they do not pull from the default quantity setting.

Q: Can I set different default quantities for different contracts?A: Not natively. Bybit applies one global default per account per trading mode (linear/inverse). Contract-specific defaults require manual adjustment or third-party automation tools.

Q: Why does my default quantity reset after updating the Bybit app?A: App updates often clear local storage caches. Re-enter and save the value post-update to restore it.

Q: Is the default quantity visible to API-based order routing systems?A: No. API clients operate independently of UI settings. Default quantity is purely a frontend convenience feature and has zero effect on REST or WebSocket order endpoints.