---
title: "GPU VRAM Calculator (Sep 2026): Estimate LLM Model Memory"
description: "Estimate model weight memory and VRAM headroom for FP16, INT8 or 4-bit inference."
canonical: https://vpsledger.com/tools/gpu-vram-calculator/
verified: 2026-10-23
format: text/markdown
html: https://vpsledger.com/tools/gpu-vram-calculator/
---

# GPU VRAM Calculator (Sep 2026): Estimate LLM Model Memory

> Markdown alternate of <https://vpsledger.com/tools/gpu-vram-calculator/>. Generated at build time from the
> same dataset as the HTML page; prices verified 2026-10-23. Data is a build-time
> snapshot — no live API, no auth. Machine entry point: <https://vpsledger.com/ai/>.

[GPU cloud](/gpu/) / VRAM calculator

# GPU VRAM calculator

Estimate the memory for model weights, then apply adjustable KV cache and runtime headroom. This is a planning estimate; actual memory depends on architecture, context length, batch size and engine.

Headroom multiplier

Weight memory in decimal GB = parameter billions × bytes per parameter. Estimated total = weight memory × headroom. The 1.2 default is a user-adjustable assumption, not a measured guarantee.

[Compare GPU VRAM and prices →](/gpu/)