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AI Tools Tools

867 free calculators, converters and checkers — built for SG, MY and the region, reviewed with current figures. No accounts, no paywalls.

867 tools live 29 categories Reviewed Aug 2026
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Agent Skill Scaffolder

Generate a valid SKILL.md for a Claude Agent Skill

AI & LLM Glossary

A searchable glossary of 50+ AI and LLM terms in plain English

AI Coding Rules Builder

Build a rules file for Cursor, GitHub Copilot or AGENTS.md

AI Image Aspect Ratio Calculator

AI image dimensions for any aspect ratio, snapped to multiples of 64

AI Image Seed Generator

Generate random 32-bit seeds for AI image generation

AI Music & Lyrics Prompt Builder

Build music prompts for SkyMusic, Haimian and Suno

AI-Crawler robots.txt Builder

Allow or block AI crawlers — GPTBot, ClaudeBot, Google-Extended and more

Chinese AI Agent Prompt Builder

Build an AI agent system prompt — role, tools, workflow, limits

Chinese AI Art Prompt Weight Editor

Add (term:weight) emphasis syntax to Chinese AI-image prompts

Chinese AI Glossary (中英对照)

A searchable bilingual glossary of 40+ AI and LLM terms

Chinese AI Image Model Comparison

Compare Jimeng, Wan, Hunyuan, ERNIE-ViLG, Kolors

Chinese AI Image Prompt Builder

Build text-to-image prompts for Jimeng, Wan, Hunyuan and more

Chinese AI Pricing Cheatsheet

Quick-reference prices for Chinese chat, image and video models

Chinese AI Prompt Builder

Build structured Chinese prompts for DeepSeek, Qwen, Doubao, Kimi and more

Chinese AI Video Model Comparison

Compare Seedance, Kling, Hailuo, Vidu — duration, resolution, access

Chinese AI Video Prompt Builder

Build text-to-video prompts for Seedance, Kling, Hailuo, Vidu

Chinese Art Style Mixer (AI Image Prompts)

Stack guofeng and Chinese-art styles into one AI-image prompt

Chinese Chain-of-Thought (CoT) Prompt Builder

Build a step-by-step reasoning prompt in Chinese

Chinese Few-Shot Example Formatter

Format input/output example pairs into a few-shot prompt

Chinese Headline Prompt Builder

Build prompts that generate honest Chinese headlines for any platform

Chinese LLM Comparison

Compare Chinese chat models — price, context, type

Chinese LLM Token & Cost Calculator

Estimate tokens and per-model API cost for DeepSeek, Qwen, Kimi and more

Chinese Negative Prompt Builder (AI Image)

Build AI-art negative prompts in Chinese + English

Chinese Prompt Normalizer

Normalize Chinese prompts — full-width punctuation, spacing, quotes

Chinese RAG Prompt Builder

Build a grounded, cited RAG / knowledge-base prompt in Chinese

Chinese Resume Prompt Builder

Build prompts to write or polish a Chinese resume / cover letter

Chinese Roleplay Character Card Builder

Build a Chinese roleplay character card for chat models

Chinese System Prompt Builder

Build a Chinese system prompt / persona — role, rules, boundaries

Context Window Visualizer

See what % of each model's context window your text fills

Coze Bot Prompt Builder

Build a Coze (扣子) bot persona prompt

Custom GPT Instructions Builder

Build the Instructions block for an OpenAI Custom GPT

DeepSeek Prompt Builder

Build structured prompts for DeepSeek V3 (chat) and R1 (reasoning)

Doubao Prompt Builder

Build conversational and persona prompts for Doubao (豆包)

Douyin Script Prompt Builder

Build short-video script prompts for Douyin (抖音) — hook, structure, CTA

E-commerce Copy Prompt Builder

Build product-copy prompts for Taobao/Tmall/JD/PDD

Embedding Cost Calculator

Price embedding a corpus for RAG: documents × tokens × model rate

ERNIE Prompt Builder

Build Chinese writing and office prompts for ERNIE (文心一言)

Few-Shot Example Formatter

Format input/output example pairs into a clean few-shot prompt

Function-Calling Schema Builder

Build a JSON Schema for LLM tool/function calling (OpenAI · Anthropic)

GLM Prompt Builder

Build agent and tool-calling prompts for Zhipu GLM (智谱)

Hailuo Prompt Builder

Build text-to-video prompts tuned for MiniMax Hailuo (海螺)

Hunyuan Image Prompt Builder

Build text-to-image prompts tuned for Tencent Hunyuan (混元)

Image Prompt Style Mixer

Mix medium, style, lighting, lens and mood into an image prompt

Image-Gen Resolution Picker

Native resolutions for SDXL, SD 1.5, Flux and Midjourney by aspect

Image-to-Video Prompt Builder

Build image-to-video (图生视频) motion prompts

Jimeng Image Prompt Builder

Build text-to-image prompts tuned for ByteDance Jimeng (即梦)

JSON Schema to Sample Data

Generate a realistic sample JSON instance from a JSON Schema

Kimi Long-Context Prompt Builder

Build long-document prompts for Kimi — summarize, extract, Q&A

Kling Prompt Builder

Build text-to-video prompts tuned for Kuaishou Kling (可灵)

LLM Cost Calculator

Estimate GPT, Claude & Gemini API costs from token counts and volume

LLM JSON Repair

Fix broken or truncated JSON that LLMs emit

LLM Price Comparison

Compare one request's cost across GPT, Claude, Gemini & Mistral, ranked

llms.txt Generator

Build a spec-compliant /llms.txt to help AI models understand your site

Markdown Table Formatter

Align and prettify Markdown tables, or convert CSV/TSV to Markdown

MCP Server Config Builder

Build a valid MCP server entry for claude_desktop_config.json

Midjourney Prompt Builder

Build a Midjourney command — subject, style and every parameter

Monthly LLM Spend Projector

Forecast monthly & annual API spend from requests per day

Prompt Cleaner & Normalizer

Clean pasted text for prompts — spaces, smart quotes, HTML, more

Prompt Diff & Compare

Compare two prompts side by side and highlight what changed

Prompt Framework Builder

Build a structured AI prompt from a named framework — RACE, CO-STAR, RTF, CRISPE or TAG

Prompt Template Filler

Fill {{variable}} placeholders in a reusable prompt template

Prompt Weight Editor

Set per-term attention weights in AUTOMATIC1111 (term:1.2) syntax

Qwen Prompt Builder

Build structured Chinese prompts for Alibaba Qwen (通义千问)

Sampling Parameters Cheat Sheet

Searchable reference of LLM sampling parameters and their effects

Seedance Prompt Builder

Build text-to-video prompts tuned for ByteDance Seedance (即梦)

Stable Diffusion Prompt Builder

Build a positive and negative Stable Diffusion prompt

Stop Sequence Tester

Preview where an LLM stop sequence cuts generated text

Structured Prompt Builder

Build a Claude-style sectioned prompt with XML tags or delimiters

System Prompt Builder

Build a system prompt for a custom GPT, Claude Project or AI agent

Temperature & Top-p Explainer

See how temperature, top-p and top-k reshape token probabilities

Text Chunker for RAG & Embeddings

Split text into token-sized chunks with overlap for RAG

Token Counter

Count exact GPT tokens (tiktoken) plus words, characters & LLM estimates

Tokenization Visualizer

See exactly how text splits into GPT tokens, colour-coded

Tokens ↔ Words ↔ Characters Converter

Convert between tokens, words and characters for LLM prompts

Tongyi Wanxiang Prompt Builder

Build text-to-image prompts tuned for Alibaba Wan (通义万相)

Vidu Prompt Builder

Build text-to-video prompts tuned for Shengshu Vidu

WeChat Article Prompt Builder

Build long-form prompts for WeChat (公众号) articles — angle, structure, tone

Xiaohongshu (RED) Content Prompt Builder

Build prompts for Xiaohongshu (小红书) notes — hook, selling points, tags

Zhihu Answer Prompt Builder

Build answer prompts for Zhihu (知乎) — stance, evidence, structure

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