Essential Tools for Modern Builders

Specialized micro-tools designed for everyone building digital products. Whether you're coding by hand, prompting AI, or using no-code platforms - these tools handle the technical details so you can focus on creating.

Built for Every Type of Builder

47M+

Professional Developers

Speed up daily tasks

15M+

AI-Powered Builders

ChatGPT & Claude users

10M+

No-Code Creators

Bubble, Webflow, Zapier

⚡

Instant Results

No setup, no learning curve - just open and use

🤖

AI-Ready

Perfect for ChatGPT prompts and AI workflows

📱

Works Everywhere

Mobile-responsive, offline-capable tools

Data Conversion & AI Tools

Convert data formats and optimize for AI workflows

URL Parameter to JSON Converter

Available Now

Extract URL parameters and convert them to clean JSON objects. Perfect for API testing, AI prompts, and automation workflows.

AI Builders: Feed website URLs to ChatGPT/Claude for structured analysis

No-Code: Convert form URLs to JSON for Zapier/Make integrations

JSON Repair Tool

Available Now

Fix broken or malformed JSON from AI models, APIs, and data sources. Automatically repair syntax errors, missing quotes, and formatting issues.

AI Builders: Clean up ChatGPT/Claude JSON outputs with syntax errors or trailing commas

No-Code: Fix JSON data before importing into no-code databases and workflows

Data Format Converter

Available Now

Convert between JSON, CSV, and XML formats instantly. Handle all combinations with smart data structure preservation and validation.

AI Builders: Transform datasets between formats for AI training and API integration

No-Code: Convert data between platforms - CSV to JSON for webhooks, XML feeds to structured data

YAML ↔ JSON ↔ Markdown Converter

Coming Soon

Seamless format conversion between YAML, JSON, and Markdown. Essential for prompt libraries and configuration management.

AI Builders: Perfect for LangChain workflows and prompt template organization

No-Code: Convert config files for different automation platforms

AI Development & Prompting

Essential tools for building with AI and optimizing prompts

Token Counter & Cost Estimator

Available Now

Instant token counting and cost calculations for OpenAI, Claude, Mistral, and more. Know your costs before making API calls.

AI Builders: Budget and optimize your AI API usage with precise cost estimates

No-Code: Calculate automation costs when using AI in Zapier workflows

Prompt Formatter & Debugger

Coming Soon

Build, test, and version your prompt templates with syntax highlighting and token counting.

AI Builders: Manage complex prompts and track what works across different models

No-Code: Perfect for organizing prompts used in automation workflows

Prompt Test Case Generator

Coming Soon

Generate and evaluate multiple test cases for prompt templates. Export results for tracking and optimization.

AI Builders: Systematically test prompt variations to find optimal performance

No-Code: Validate AI responses before deploying in production workflows

Embedding Playground

Coming Soon

Visualize embedding vectors from OpenAI, Cohere, and others. Compare similarity and clustering.

AI Builders: Perfect for RAG development and semantic search optimization

No-Code: Understand how AI interprets your content for better results

LLM API Wrapper Generator

Coming Soon

Generate reusable TypeScript/Python client wrappers for prompt templates with retry logic and output parsing.

AI Builders: Create production-ready API clients for your proven prompt templates

No-Code: Generate code that developers can integrate with your workflows

Mini Vector Store UI

Coming Soon

Create, store, and query local embedding databases. Perfect for RAG experimentation and prototypes.

AI Builders: Build and test RAG systems before deploying to production

No-Code: Create searchable knowledge bases for customer support bots

CSS & Design Tools

Styling calculators and design utilities for all skill levels

CSS Unit Calculator

Available Now

Convert between px, rem, em, vw, vh with live preview and responsive breakpoints. No CSS knowledge required.

AI Builders: Perfect when AI gives you CSS code but you need different units

No-Code: Convert design system values for Webflow, Framer, or Figma

Flexbox Properties Calculator

Coming Soon

Generate CSS flexbox properties with visual preview and copy-paste code. Great for layout debugging.

AI Builders: Validate and adjust AI-generated flexbox layouts

No-Code: Create custom CSS for advanced Bubble or Webflow layouts

Cost & Performance Planning

Budget and optimize your projects before you build

API Cost Calculator

Coming Soon

Compare pricing across cloud providers and estimate API usage costs. Plan your budget before development.

AI Builders: Estimate costs before asking AI to build APIs or integrations

No-Code: Budget for Zapier, Bubble, or custom API integrations

Bundle Size Impact Calculator

Coming Soon

Estimate the performance impact of adding new dependencies to your project. Keep apps fast.

AI Builders: Evaluate AI-suggested libraries and packages before adding them

No-Code: Understand performance impact of custom code in no-code apps

Project Planning & Productivity

Plan and organize projects for any building approach

Sprint Capacity Calculator

Coming Soon

Calculate team capacity for agile sprints with vacation time, meetings, and development approach (coding vs prompting).

AI Builders: Plan AI-assisted development sprints and prompting time

No-Code: Estimate timeline for no-code app development projects

Technical Debt Cost Estimator

Coming Soon

Estimate the real cost of technical debt on your development velocity and team productivity.

AI Builders: Evaluate when to refactor vs rebuild with AI assistance

No-Code: Assess when to migrate between no-code platforms

🚀 Building the Future of Productivity Tools

We're creating essential micro-tools for the 70+ million people building digital products worldwide. Whether you're prompting AI, writing code, or using no-code platforms - we're solving the small frictions that add up to hours of lost productivity.

What's Coming Next:

  • Token Counter & Cost Estimator
  • Prompt Formatter & Debugger
  • Advanced CSS & Design Tools
  • Embedding Playground & Vector Store
  • Project Planning Calculators

Why BuilderTools.dev?

  • Zero setup - works instantly
  • Built for all skill levels
  • AI workflow optimized
  • Mobile-responsive design
  • 4 tools available, more weekly

Have an idea for a tool that would save you time? We're always looking for the next productivity pain point to solve. Whether you're building with AI, code, or no-code tools - let us handle the technical calculations so you can focus on creating.