Tools Catalog
VRAM Calculator for Local LLMs
Use this calculator when the core question is memory fit: whether a model, quantization, and context window will fit into a specific GPU or unified-memory system.
Live Tool
VRAM Calculator
Estimate planning VRAM for 58 OpenRouter-backed local models. The list is sorted A-Z, searchable, and each context menu now scales from small presets up to the model maximum.
Uses a planning formula: total parameters x bytes per parameter, plus runtime and context overhead.
Target model Start typing any part of the model name to narrow the A-Z list.
Estimated VRAM Select a model
Parameter size Choose a model first
Best fit Choose a model first
Start typing to search the catalog, then pick a model to unlock quantization, context, and hardware recommendations.
Recommended Hardware
Recommendations appear after you choose a model.
Inputs
What you enter
- Target model
- Quantization profile
- Context window
- Hardware sort mode
Outputs
What it returns
- Estimated VRAM
- Smallest matching hardware tier
- Compatible hardware list
- Quantization and context notes
Why This Page Exists
Unique value
This page is unique because it answers the memory-fit question directly and exposes the quantization and context assumptions behind the result.
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