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All Tools

Explore our complete collection of 1025+ free online tools for developers, writers, and professionals

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The complete index of every tool on the site, grouped by category. Use the search box above to filter the interactive list.

Developer Tools 215 tools

Text Tools 63 tools

Converters 148 tools

Android DP/PX Converter
Angle Converter
ANSI to HTML Converter
Apache to Nginx Converter
ASCII Binary Converter
Audio Converter
Barcode Decoder
Base Converter
Base32 Converter
Base45 Converter
Base58 Converter
Base62 Converter
Base64 to Image Converter
BBCode to HTML Converter
BCD Converter
Blood Glucose Converter
Buddhist Era (พ.ศ.) Converter
CBOR Encoder/Decoder
Chemical Equation Balancer
Clothing Size Converter
Color Converter
Color Name Finder
Color Wheel Rotator
Comma Separator
Cooking Unit Converter
CSS Logical Properties Converter
CSS to JS Object Converter
CSS to SCSS Converter
CSS to Tailwind Converter
CSS Unit Converter
CSV to Excel Converter
CSV to GeoJSON Converter
CSV to HTML Table Converter
CSV to JSON Converter
CSV to JSONL/NDJSON Converter
CSV to Markdown Converter
CSV to Parquet Converter
CSV to vCard Converter
CSV Transposer
Data Storage Converter
Data URI Generator
Date Format Converter
Decimal Time Converter
Density Converter - kg/m3, g/cm3, lb/ft3 Online
Discord Timestamp Generator
Docker Run to Compose Converter
Energy Converter - Joules, Calories, BTU, kWh Online
ENV to JSON Converter
Env to Tfvars Converter
Ethereum Unit Converter
Excel Formula Translator
Excel Serial Date Converter
Excel to CSV Converter
Figma Design Token Converter
FILETIME / LDAP Timestamp Converter
Force Converter - Newtons, Kilogram-force, Pound-force Online
Frequency Converter - Hz, kHz, MHz, GHz Online
Fuel Efficiency Converter
GPS Coordinate Converter
Gradle to Maven Converter
Gray Code Converter
Height Converter
HEX to RGB Converter
Hijri–Gregorian Date Converter
Hourly to Salary Converter
HTML Table to JSON
HTML Tag Remover
HTML to Markdown Converter
HTML to PDF Converter
HTML to Pug Converter
Image to Base64 Converter
Image to ICO Converter
Image to PDF Converter
ISO 8601 Duration Converter
ISO Week Number Converter
Jira Markup to Markdown Converter
JSON to CSV Converter
JSON to ENV Converter
JSON to Excel Converter
JSON to Go Struct Converter
JSON to INI Converter
JSON to Markdown Table Converter
JSON to PHP Array Converter
JSON to Query String Converter
JSON to TOML Converter
JSON to TOON Converter
JSON to XML Converter
JSON to YAML Converter
JSONC to JSON Converter
Laundry Care Symbol Chart
Line Ending Converter - CRLF to LF & LF to CRLF Online
Markdown to Confluence Converter
Markdown to CSV Converter
Markdown to DOCX Converter
Markdown to HTML Converter
Markdown to Mind Map Converter
Markdown to PDF Converter
Markdown to Slack Converter
Markdown to Slides Converter
Markdown to WhatsApp Converter
Meat Doneness Temperature Chart
MessagePack Converter
Military Time Converter
Morse Code Converter
NATO Phonetic Alphabet Converter
Number to Thai Baht Text Converter
Number to Words Converter
OKLCH Color Converter
Paper Size Converter
Passport MRZ Parser
PDF to Image Converter
PDF to Text Extractor
Phone Number Formatter
Power Converter - Watts, Kilowatts, Horsepower Online
Pressure Converter - Convert Between Pressure Units
Pug to HTML Converter
Punycode/IDN Converter
PX to REM Converter
Ring Size Converter
Roman Numeral Converter
Scientific Notation Converter
Shoe Size Converter
Speed Converter - Convert Between Speed Units
SQL INSERT to JSON Converter
Subtitle Format Converter
Subtitle Sync Shifter
SVG to ICO Converter
SVG to PNG Converter
Tailwind to CSS Converter
Tailwind v3 to v4 Config Migrator
Temperature Converter
Text to Image Converter
Tfvars to Env Converter
Thai Area Converter (Rai, Ngan, Tarang Wa)
Time Zone Converter
TOML ↔ YAML Converter
Torque Converter - N·m to lb·ft & lb·in Online
Treadmill Pace Converter
TSV to CSV Converter
Unit Converter
Unix Timestamp Batch Converter
Unix Timestamp Converter
vCard Parser & Viewer
VIN Decoder
Weight/Mass Converter
Word to Markdown Converter
XML to JSON Converter Online - Free Data Format Converter
YAML to Properties Converter

Generators 119 tools

Image Tools 45 tools

Calculators 127 tools

SEO Tools 25 tools

AI Crawler Visibility Checker
Breadcrumb Schema Generator
Canonical URL Generator
FAQ Schema Generator
Favicon & App Icon Finder
Headline Analyzer
Hreflang Tag Generator
Keyword Density Checker
LLMs.txt Generator
Local Business Schema Generator
Meta Length Checker
Meta Tags Generator
Open Graph Generator
Open Graph Image Generator
Product Schema Generator
robots.txt Generator
Robots.txt Tester
RSS Feed Generator
SERP Snippet Preview
Sitemap URL Extractor
SSL Certificate Checker
Structured Data Generator
Twitter Card Generator
UTM Campaign Builder
XML Sitemap Generator

Security Tools 64 tools

Network Tools 22 tools

BIMI Record Generator
CAA Record Generator
DHCP Option Reference & Builder
DKIM Record Generator
DMARC Record Builder
DNS Lookup
HTTP Headers Viewer
IP Address Analyzer & CIDR Calculator
IP Range Calculator
IPv6 Expander
IPv6 ULA Generator
MAC Address Generator
MAC Address Vendor Lookup
MTA-STS Policy Generator
Network Speed Test
Nmap Command Generator
Port Number Lookup
Port Scanner
SPF Record Builder
Subnet Calculator
TCP MSS & MTU Calculator
WHOIS Lookup

File Tools 32 tools

AI Tools 11 tools

AI Token Cost Estimator
AI Tool Schema Builder
Image Background Remover
LLM Context Window Packer
LLM Prompt Template Builder
LLM Response Cleaner
LLM System Prompt Builder
LLM VRAM Calculator
Markdown Chunker for LLMs
Model Training Cost Calculator
Prompt Injection Scanner

Testing Tools 4 tools

Bundle Size Analyzer
Click Speed Tester
Lighthouse Score Estimator
Mock Data Generator

Database Tools 11 tools

CSV SQL Query Engine
CSV to SQL Converter
GraphQL Query Builder
JSON to SQL Converter
MongoDB ObjectId Decoder
Parquet File Viewer
SQL Formatter
SQL JOIN Visualizer
SQL Schema Visualizer
SQL to MongoDB Converter
SQLite Database Viewer

Financial Tools 70 tools

Amortization Schedule Generator
Annuity & Withdrawal Calculator
APY Calculator
Asset Allocation Calculator - Stock/Bond/Cash Mix & Projection
Auto Lease Calculator
Auto Loan Calculator
Break-Even Calculator
CAGR Calculator - Compound Annual Growth Rate
Canal Boat Running Cost Calculator
Capital Gains Tax Estimator
Co-founder Equity Calculator
Compound Interest Calculator - Investment Growth & Return Calculator
Conversion Rate Calculator
Cost of Living Comparison Calculator
CPC Calculator
CPM Calculator
Credit Card Validator
Crypto Profit Calculator
CTR Calculator
Currency Converter
Customer Lifetime Value (CLV) Calculator
DCA Calculator - Dollar-Cost Averaging Investment Returns
Debt Payoff Calculator
Depreciation Calculator
Discount Calculator
Dividend Calculator - Yield, Income & DRIP Projection
Email Bounce Rate Calculator
FIRE Calculator
Freelance Rate Calculator
Fuel Cost Calculator
Home Office Deduction Calculator
IBAN Breakdown
IBAN Validator
Inflation Calculator
Interest-Only Mortgage Calculator
Investment ROI Calculator
IRR Calculator
Lease vs Buy Calculator
Loan Calculator
Loan Comparison Calculator
Monthly Budget Calculator
Mortgage Calculator
Mortgage Statement Analyzer
Net Worth Calculator
NPS Calculator
NPV Calculator (Net Present Value)
Options Profit Calculator
Overtime Pay Calculator
Payback Period Calculator (Simple & Discounted)
Paycheck Calculator
Payment Processing Fee Calculator
Profit Margin Calculator
Refinance Calculator
Rent vs Buy Calculator
Rental Yield Calculator
Retirement Calculator - Project Savings & Withdrawal Income
ROAS Calculator
Salary Calculator
Savings Goal Calculator
Startup Runway Calculator
Stock Position Size Calculator
Subscription Auditor
SWIFT/BIC Validator
Tax Calculator
Thai Salary Calculator
Thai Withholding Tax Calculator
Time Card Calculator
Tip Calculator
VAT Calculator - Add or Remove Value Added Tax
XIRR Calculator

Productivity Tools 36 tools

Hardware Tools 24 tools

555 Timer Calculator
Battery Life Calculator
Bubble Level Tool
Capacitor Code Calculator
Dead Pixel Test
Decibel Meter
Gamepad Tester
LED Resistor Calculator
Microphone Tester
Motion & Orientation Sensor Tester
Mouse Tester
NFC Tag Reader/Writer
Online Guitar Tuner
Online Ruler
PCB Trace Width Calculator
PSU Wattage Calculator
Refresh Rate Tester
Speaker & Headphone Test
Tap & Drill Bit Size Chart
USB Device Info Viewer
Vision & Eye Chart Screen Test
Voltage Divider Calculator
Voltage Drop Calculator
Webcam & Microphone Tester

Accessibility Tools 9 tools

Accessible Name Calculator
ARIA Accessibility Checker
Bionic Reading Converter
Braille Translator
Heading Structure Checker
HTML Alt Text Checker
Keyboard Focus Order Checker
OKLCH Contrast Checker
Speech to Text Transcriber

Free online tools for everyday tasks and productivity. Simple, fast, and reliable web tools.

Quick Links

Home Tools Categories Collections Compare Tools Blog About Contact

Legal

Privacy Cookies Terms

Made withcare for everyone