Developer6

JWT Inspector
Regex Playground
UUID Generator
Cron Builder
Diff Checker
API Response Formatter

Documents5

PDF Merge
PDF Split
Image to PDF
Markdown Editor
Word Counter

Conversion6

JSON ⇄ YAML
JSON ⇄ CSV
Base64 Encoder
URL Encoder
Color Converter
Number Base Converter

Security4

Password Generator
Password Strength Analyzer
Hash Generator
CSP Builder

Finance6

Loan Calculator
Expense Splitter
Invoice Generator
Tip Calculator
Percentage Calculator
Unit Converter

Image5

Image Resizer
Image Compressor
Image Converter
Color Extractor
Favicon Generator

Text4

Case Converter
Lorem Ipsum
Slug Generator
String Utilities

AI & LLM8

Token Counter & CostNew
LLM Model ComparatorNew
Prompt FormatterNew
System Prompt LinterNew
JSON Schema BuilderNew
AI API Cost EstimatorNew
Text Similarity AnalyzerNew
AI Rules File GeneratorNew

Home AI & LLMToken Counter & Cost

Token Counter & Cost

Count tokens and estimate API cost live across any model.

Runs entirely in your browser — your data never leaves this tab

Loading tool…

ToolNook · Everything runs in your browser · We never see your data