Count tokens for GPT-4, Claude, Gemini and more. Paste any text or entire documents to see exact token usage before sending to an AI model.
Build structured, high-quality prompts for ChatGPT, Claude, and Gemini. Define role, context, task, format, and constraints in a guided form.
Convert large JSON datasets into clean, token-efficient AI prompts. Perfect for feeding structured data to ChatGPT, Claude, or Gemini without wasting context.
Transform CSV files and large tabular datasets into AI-ready prompts. Control which columns to include, row limits, and output format to stay within token budgets.
Generate professional system prompts for AI assistants, chatbots, and agents. Choose persona, tone, domain, and constraints to produce a production-ready system prompt instantly.
Calculate whether your text fits within any AI model's context window. Compare token usage across GPT-4o, Claude 3.5, Gemini 1.5 Pro, Llama 3, and more.
Ever wondered what's inside a JWT? You can decode the header and payload to see the claims, which is super helpful for debugging authentication.
Starting a prompt from scratch every time is slow and inconsistent. The AI Prompt Template Library gives you 100+ ready-to-use, copy-and-paste prompt templates across the most common use cases — coding, content writing, data analysis, SEO, email writing, debugging, and more. Each template is written to follow prompt engineering best practices, with placeholders you can fill in. Whether you're using ChatGPT, Claude, Gemini, or any other LLM, these templates save you the trial-and-error of finding what works.
Each template is pre-structured with the key components of an effective prompt — role, context, task, and format instructions. The placeholders guide you to fill in the parts that vary while keeping the proven structural patterns intact.
Prompt templates work because LLMs are sensitive to how tasks are framed. The same underlying request can produce dramatically different quality outputs depending on the structure and specificity of the prompt. Templates encode the structural patterns that consistently produce good results, letting you focus on filling in your specific content rather than figuring out the framing from scratch.
Yes — the templates use natural language instructions that work across ChatGPT, Claude, Gemini, Llama, Mistral, and any other instruction-following LLM. Some templates note if they're particularly well-suited to a specific model.
Yes — use the "Request a Tool" link at the top of the site to suggest new templates or categories you'd like to see added.
All calculations and data processing for this tool are performed locally in your browser. UtilToolkits does not send any of your data to an external server, ensuring your information remains private and secure.
15+ battle-tested prompts for coding, writing, data analysis, SEO, and more. Customize and copy in one click.