ALL TOOLS
Search 69 browser-based utilities, filter by category, and star the ones you reach for daily.
JSON to CSV & CSV to JSON Converter
Convert JSON arrays to CSV spreadsheets or CSV files to JSON with nested object flattening and live tabular preview.
JSON to SQL Schema & Query Converter
Convert JSON objects and arrays into SQL CREATE TABLE and INSERT INTO statements with automatic data type detection and multi-dialect support.
Age & Lifetime Milestone Calculator
Calculate your exact age down to the second, total days, hours, minutes, heartbeats, breaths, next birthday countdown, and planetary ages.
SemVer Calculator & Range Tester
Parse, validate, compare, sort, and calculate version increments according to SemVer 2.0.0 rules and NPM range expressions.
YAML <-> JSON Converter
Convert bidirectionally between YAML and JSON with real-time validation, key sorting, and custom indentation options.
SQL Formatter & Prettifier
Format, indent, validate, and minify SQL queries online. Capitalize keywords, format clauses, and clean up raw database queries.
CIDR & Subnet Calculator
Calculate IPv4 CIDR blocks, usable host IP ranges, subnet masks, wildcard masks, and binary network breakdowns.
Large CSV & TXT Table Viewer (Up to 1GB)
View, parse, and analyze massive pipe-separated or delimited CSV and TXT files up to 1GB in a fast paginated table directly in your browser with zero memory freeze.
Number Base Converter
Convert numbers across Decimal, Binary, Hexadecimal, Octal, and custom bases (Base 2-36) with two's complement details.
Timestamp Converter
Convert Unix timestamps, ISO dates, and local date strings instantly in your browser.
Cron Expression Parser
Parse, explain, and calculate execution times for 5-part cron expressions.
ASCII Table
Browse ASCII characters in decimal, hex, and binary with search and quick copy actions.
Unix Permissions Calculator
Convert read, write, and execute bits into chmod octal and symbolic permission strings.
Number to Words Converter
Convert numbers into English words — supports decimals, negative values, and magnitudes up to 999 trillion.
Cron Expression Generator
Build cron scheduling expressions with interactive controls, presets, and human-readable descriptions.
More tools coming soon ·every utility runs client-side, no data leaves your browser.