A terminal-styled futures position size calculator for Quantower traders. Enter your account balance, risk per trade, and stop loss — get the exact number of contracts instantly.
→ ledian63s.github.io/quanta/calc
No install required. Full web app with the same sidebar UI as the desktop versions.
Get the latest release for your platform from the Releases page.
| Platform | Download |
|---|---|
| macOS | Quanta-macOS-vX.X.X.X.zip |
| Android | Quanta-Android-vX.X.X.X.apk |
| Windows | Quanta-Windows-vX.X.X.X.zip |
| iOS | Quanta-iOS-vX.X.X.X.zip — sideload via AltStore |
| Web | Try online — no install |
- Instant calculation — contracts update live as you type
- Contract override — tap +/− to manually adjust, double-tap to reset to auto
- Nearest contract — rounds to the closest whole number, never fractional
- Levels table — scroll through a full risk ladder at your fixed stop loss
- Instrument favorites — star instruments, only favorites appear in the calculator
- Risk modes — fixed dollar amount or % of account balance
- Persistent settings — balance, risk, and instrument remembered across sessions
- macOS native desktop — sidebar layout with macOS traffic light window controls (close/minimize/zoom), auto-collapses to icon-only when the window is narrowed
- Web app — full sidebar UI in the browser, no install needed
- VOID theme — gold-on-black terminal aesthetic with scanline overlay, light mode available
| Ticker | Name | Point Value |
|---|---|---|
| ES | E-mini S&P 500 | $50 |
| NQ | E-mini Nasdaq-100 | $20 |
| GC | Gold Futures | $10 |
| 6E | Euro FX | $12.50/pip |
| 6B | British Pound | $6.25/pip |
| MES | Micro E-mini S&P 500 | $5 |
| MNQ | Micro E-mini Nasdaq-100 | $2 |
| MGC | Micro Gold | $1 |
contracts = round( riskAmount / ( stopLossPoints × pointValue ) )
actualRisk = contracts × stopLossPoints × pointValue
Prerequisites: Flutter SDK ≥ 3.0.0
git clone https://github.com/Ledian63S/quanta.git
cd quanta
flutter pub get
flutter runPlatform-specific:
flutter build macos --release
flutter build apk --release
flutter build windows --release # Windows only
flutter build ipa --release # iOS, requires Apple Developer account- Flutter — cross-platform UI
- Provider — state management
- Google Fonts — JetBrains Mono
- window_manager — custom desktop title bar and traffic lights
- url_launcher — external links
- package_info_plus — dynamic version display
MIT — see LICENSE
Made with ♥ for traders