Token counter · cost calculator · context window · budget planner · throughput timer. Works with GPT-4o, Claude, Gemini & more. Runs in your browser.
Paste anything. See how GPT, Claude, Gemini and Llama split it into tokens — in real time.
Tokens × model price = USD. Compare every major provider side-by-side.
How much of the model's memory your prompt fills — across all models.
Requests / day × tokens × model = monthly API spend. Plan before you ship.
How long will a response take at N tokens/sec? Enter size and output rate.
Two-way conversion between tokens, words, characters, and pages — adjustable ratio.
Convert decimal hours to HH:MM:SS and back. Multi-unit time converter.