All Tools

VRAM Calculator

Calculate exact VRAM needed for any model, quantization, and context length.

Pick your GPU and see the best local LLM it can run — the highest-quality quant that fits, with estimated speed.

See the max context length that fits your GPU — and how much more Q8/Q4 KV cache buys you.

Estimate GGUF file size before downloading, by quant level.

Estimate response time from tokens/sec and output length.

Compare local vs API cost across context lengths and providers.

Wrap raw prompts in ChatML, Llama 3, Alpaca, or Qwen chat templates.

Count tokens across multiple tokenizers side by side.

Get a quantization recommendation based on your VRAM and priorities.

See how much context window your system prompt consumes.