All Tools
Browse the full Toolhox catalog — 500+ free online tools across every category. No signup, no friction.
105 tools
Next.js Middleware Matcher Regex Generator
Easily build and test regex for Next.js middleware matchers. The 2026 Regex Generator helps developers streamline routing, improve accuracy, and save time.
Free Cors Header Generator Online
Quickly generate CORS headers for APIs and web apps. The 2026 CORS Header Generator ensures secure cross‑origin requests, faster setup, and improved compatibility.
Docker Run To Docker Compose Converter
Convert Docker run commands into Docker Compose files instantly. The 2026 Converter simplifies container orchestration, saves time, and improves deployment workflows.
Json To Python Dataclass Generator
Convert JSON to Python dataclasses instantly. Free online JSON to dataclass, Pydantic, TypedDict, and attrs generator that runs entirely in your browser.
Free Curl To Fetch Node.js Converter Online
Free Convert cURL commands into Node.js Fetch code. Easily translate URLs, methods, headers, and request bodies for JavaScript projects. 100% Client Side Tool.
Toml To Yaml Converter Online
Convert TOML to YAML with this simple online converter. Transform structured TOML data into readable YAML while preserving keys, values, and nesting.
Env To Json Stringify
Convert .env to JSON.stringify output instantly. Free online env to JSON converter that runs entirely in your browser - paste .env, click Convert, copy the stringified JSON.
Proto To Json Converter Online
Free Convert Protocol Buffers definitions to JSON for development, testing, documentation, and API work with Toolhox.100% private, runs in your browser.
Openai Batch Api Cost Calculator
OpenAI Batch API Cost Calculator estimates batch input, cached-input, and output token costs using current model pricing, so you can plan API spend in dollars.
Rag Context Chunk Token Estimator
Rag Context Chunk Token Estimator helps estimate RAG context tokens, chunk capacity, overlap, and reserved output space for better prompt planning.
System Prompt Token Usage Calculator
Use System Prompt Token Usage Calculator to estimate prompt tokens, review text size, and plan system prompt length before sending content to an LLM.
Llm Prompt Token Counter For Markdown Text
Count tokens in Markdown prompts and estimate text size with Llm Prompt Token Counter For Markdown Text. Useful for prompt planning and LLM context limits.
Claude 3.5 Sonnet Token Cost Calculator
Use the Claude 3.5 Sonnet Token Cost Calculator to estimate token usage and API costs from text, helping you plan prompts, budgets, and API usage with ease.
Llm Prompt Token Calculator Online
Use the Llm Prompt Token Calculator Online to estimate prompt tokens, review text size, and plan LLM usage and API costs before sending requests.
Gemini 3.1 Pro Api Vs Gpt-5 Api Per Token Cost
Compare Gemini 3.1 Pro API vs GPT-5 API per token cost Calculator to estimate input and output spend from token counts using current standard API pricing today.
Gemini Thinking Tokens Cost Calculator
Calculate Gemini thinking token costs using token usage and the applicable price per million tokens. Get a quick cost estimate for AI API budgeting.
Gemini Search Grounding Cost Calculator
Calculate Gemini Search grounding costs based on search usage, free allowances, and applicable Google rates. Plan your Gemini API budget.
Gemini Batch Api Discount Calculator
Compare Gemini API and Batch API costs, calculate potential savings, and estimate the Batch API discount from your usage and pricing inputs.
Gemini Api Caching Cost Estimator
Estimate Gemini context caching savings: uncached input plus cached reads plus output plus hourly storage. Storage is billed once, not per request. 100% private - runs entirely in your browser.
Gemini 3.6 Flash Api Cost Calculator
Estimate Gemini 3.6 Flash API costs using input tokens, output tokens, and request volume. Calculate token-based API costs in USD.
Gemini 3.5 Flash-Lite Volume Estimator
Estimate Gemini 3.5 Flash-Lite token volume and usage for AI workloads. Plan input, output, requests, and potential API usage with Toolhox.
Gemini 3.1 Pro 200k Pricing Estimator
Estimate Gemini 3.1 Pro API costs using input and output tokens, with pricing estimates for requests above and below the 200k-token threshold.
Gpt-4o Vs Claude Price Calculator
Compare GPT-4o and Claude API costs using input tokens, output tokens, and pricing to estimate AI usage costs for your workload.
Openai Api Cost Per User Calculator
Estimate OpenAI API cost per user using token usage and pricing inputs. Calculate per-user and multi-user API costs for planning.
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