All Free Online Tools

JSON Formatter

Format and validate JSON

Mortgage Calculator

Calculate loan payments

Whois Lookup

Domain registration info

Base64 Encoder/Decoder

Encode and decode Base64

Currency Converter

Live currency rates

Graphing Calculator

Interactive math graphing

Wheel of Names

Random name picker wheel

SLA Calculator

Calculate SLA downtime

Cron Parser

Parse cron expressions

Text Diff Checker

Compare text differences

Chmod Calculator

Unix file permissions

Markdown Preview

Live Markdown renderer

Regex Tester

Test regex patterns

Hash Generator

Generate hash digests

URL Encoder/Decoder

Encode/decode URLs

UUID Generator

Generate UUIDs

Color Converter

Convert color formats

Subnet Calculator

IPv4 & IPv6 subnet math

JWT Decoder

Decode JWT tokens

Timestamp Converter

Unix timestamp converter

CSV to JSON Converter

Convert CSV and JSON

Image Converter

Convert PNG, JPEG, WebP

Favicon Generator

Create favicons & app icons

Notepad Calculator

Notepad-style math solver

Percentage Calculator

Every percentage calc

Age Calculator

Exact age from birthdate

Date Calculator

Date math & business days

BMI Calculator

Body Mass Index & category

Random Number Generator

Random numbers in range

Countdown Timer

Countdown to any date

Time Zone Converter

Convert across time zones

Loan Calculator

Payments & amortization

Compound Interest Calculator

Compound growth projections

Number Base Converter

Binary, hex & any base

UTM Link Builder

Campaign tracking URLs

Word Frequency Counter

Word & phrase density

Email Signature Generator

HTML email signatures

Gzip Compress/Decompress

Gzip text compression

Escape/Unescape

Escape HTML, JS & regex

YAML Formatter

Format and validate YAML

SQL Formatter

Format SQL by dialect

HTML Beautifier

Beautify HTML, CSS & JS

JSON ↔ XML Converter

Convert JSON and XML

JSON Schema Validator

Validate JSON schemas

Meta Tag Generator

SEO & social meta tags

Robots.txt Generator

Control crawler access

SEO Slug Generator

Clean URL slugs

Meta Tag Analyzer

Audit page metadata

Link Auditor

Extract & audit links

Tip Calculator

Tip & bill splitter

Sales Tax Calculator

Add or extract sales tax

BAC Calculator

Estimate blood alcohol content

Calorie Calculator

Daily calories, BMR & TDEE

Fraction Calculator

Exact fraction math

Grade Calculator

Course grade & final target

GPA Calculator

4.0 scale GPA

Statistics Calculator

Mean, median, std dev

Hours Calculator

Timesheet hours with breaks

Working Days Calculator

Business days minus holidays

Fancy Text Generator

Stylish Unicode text fonts

Text Reverser

Reverse text three ways

Line Sorter

Sort or shuffle lines

Duplicate Line Remover

Remove duplicate lines

Remove Line Breaks

Strip newlines from text

Find and Replace

Search & replace with regex

Text Repeater

Repeat text multiple times

Morse Code Translator

Translate Morse code

Roman Numeral Converter

Convert Roman numerals

Number to Words Converter

Spell out numbers

ROT13 & Caesar Cipher

ROT13 & Caesar shifts

Binary to Text Converter

Binary & hex converter

Words to Pages Calculator

Words to pages estimate

Flip a Coin

Flip a fair virtual coin

Dice Roller

Roll dice like 2d6+3

Yes or No

Instant random yes or no

Magic 8-Ball

Classic magic 8-ball answers

Scientific Calculator

Advanced math calculator