IDE Tune Calculator
Get recommended max heap (-Xmx) and cache budgets for your IDE and project scale. Tune VS Code, IntelliJ, Unity, Unreal, Blender and more. Pure client-side.
IDE Tune Calculator
Get heap & cache budgets for VS Code, IntelliJ, Unity, Unreal & more.
- Set "files.watcherExclude" for node_modules/dist.
- Disable unused extensions.
Why IDE tuning pays off
A misconfigured IDE either starves (too small a heap → constant GC pauses) or hogs (too large a heap → swap on low-end laptops). This calculator balances your heap against system RAM and your project scale, and pairs naturally with the Dev RAM Calculator.
Quick tune cheatsheet
- VS Code: cap
--max-old-space-sizeand excludenode_modulesfrom the file watcher. - JetBrains: raise
-Xmx, exclude build output from indexing, invalidate cache after big branch switches. - Unity/Unreal: move
Library/or DDC to NVMe, disable auto-refresh while scripting.
▸Is this IDE tune calculator free?
Yes — free, in-browser, no signup, no paywall, instant results.
▸Which IDEs are supported?
VS Code, WebStorm, IntelliJ IDEA, CLion, Unity, Unreal Engine, Blender and Xcode, each with engine-aware presets.
▸How do I apply the heap value?
For JetBrains IDEs edit the *.vmoptions file (-Xmx). For Unity/Unreal set the editor heap/derived data cache location on a fast disk.
▸Can I print my tune sheet?
Yes — the Print button exports a clean copy with calculators and ads hidden.