Skip to content

Tools

21 free online tools: converters, generators, test design techniques, formatters, and more.

🔄Converters

Unit Converter

Length, weight, temperature, volume, area, speed

Unix Timestamp

Convert timestamps to dates and back

📅Date & Time

Date Calculator

Calculate difference between dates or add/subtract time

Timezone Calculator

Convert time between timezones worldwide

📝Text

Text Compare

Compare two texts and see line-by-line differences

Regex Tester

Test regular expressions with real-time matching

JSON Formatter

Format, validate, and beautify JSON data

YAML Formatter

Format and validate YAML files, convert to JSON

JWT Decoder

Decode and inspect JWT tokens

Count Tool

Count characters, words, lines, and paragraphs

Text Generator

Generate Lorem Ipsum, random text, or passwords

Base64 Encoder

Encode and decode Base64 strings

URL Encoder

Encode and decode URL components

⚙️Generators

QR Code Generator

Generate QR codes from text or URLs

Barcode Generator

Generate barcodes in EAN-13, Code 128, and more

SQL Query Generator

Generate SELECT, INSERT, UPDATE, DELETE queries

GUID Generator

Generate unique UUIDs/GUIDs (v4)

User Data Generator

Generate realistic fake user data for testing

🧪Test Design

Pairwise Testing

Generate all-pairs test combinations

Decision Table

Build decision tables for condition combinations

Domain Testing

Generate boundary values and equivalence partitions