Local image analysis
Drop your image
PNG, JPG, or WebP. Processing stays on this device.
Sample photo by Scott Szarapka on Unsplash
Image Token Calculator
Estimate image token usage across OpenAI, Anthropic, and Gemini before making an API request.
100% in your browserYour image is never uploadedFree
Official methods
How image tokens are calculated
tiles × 170 + 85Resize, count 512px tiles, then add the base image cost.
OpenAI docs ↗(width × height) ÷ 750Pixel area provides a close estimate before image resizing.
Anthropic docs ↗tiles × 258Large images are divided into visual tiles with a fixed token cost.
Gemini docs ↗Clear answers
Frequently asked questions
A 1024×1024 image uses four 512px tiles, or 765 tokens in OpenAI high-detail mode: 4 × 170 + 85.
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