AI Tools
Bulkcalculator AI Tools are free utilities for token counting, API cost planning, prompt writing, model comparison, context-window analysis, and AI image sizing. Everything is static and browser-based, so your prompts, documents, and numbers never need to be uploaded.
Use these tools when planning LLM applications, checking prompt budgets, comparing model specs, preparing Midjourney prompts, or teaching prompt-engineering basics.
AI Token Counter
Count tokens for GPT, Claude, Gemini, and other LLMs with private browser-only estimates.
Use it →AI utilityLLM API Cost Calculator
Estimate per-request, daily, monthly, and annual LLM API costs across popular models.
Use it →AI utilityAI Prompt Builder
Create structured prompts for ChatGPT, Claude, Gemini, and other assistants without calling an API.
Use it →AI utilityMidjourney Prompt Builder
Assemble Midjourney prompts, validate parameters, and copy production-ready image prompts.
Use it →AI utilityAI Prompt Library
Browse, customize, and copy curated prompt templates for writing, coding, marketing, art, and business.
Use it →AI utilityContext Window Comparator
Compare token limits and estimate how much writing, code, or PDF content fits in each model.
Use it →AI utilityAI Model Comparison Table
Sort, filter, and compare model pricing, context windows, outputs, modalities, and best-fit use cases.
Use it →AI utilityAI Image Size Calculator
Convert aspect ratios, platform sizes, and image-model dimensions for AI image and video tools.
Use it →AI utilityAI Prompt Engineering Cheat Sheet
A printable prompt-engineering reference for text, image, JSON, multimodal, and safety-aware prompts.
Use it →AI utilityAI Hashtag Generator
Generate platform-optimized hashtags for Instagram, TikTok, LinkedIn, YouTube, X, Pinterest, and Threads with banned-tag filtering.
Use it →AI utilityCitation Generator
Build APA, MLA, Chicago, Harvard, IEEE, Vancouver, AMA, Nature, and CSE citations with local bibliography export.
Use it →AI utilityFree Text-to-Speech
Read any text aloud in 50+ languages with adjustable voice, speed, and pitch — 100% browser-based, no signup.
Use it →AI utilityFree Voice-to-Text
Speak and let your browser transcribe in 60+ languages with punctuation commands and one-click export.
Use it →AI utilityHindi to English Translator
Devanagari + Hinglish input, voice input, audio output, multi-engine fallback. Built for Indian users.
Use it →About these tools
The AI Tools category extends Bulkcalculator's browser-first calculator approach into common AI workflows. The pages help you prepare, estimate, compare, and copy the inputs you need for your own tools.
Model pricing and context data live in assets/models-data.js; prompt library entries live in assets/prompts.json.