Universal Converter
Crank The Lineturn the wheel — nothing leaves the board
Operating: 01TZ · TIME & TIMEZONE← → move · press a tab · turn the wheel — nothing leaves the board

Universal Converter

Simple, Fast Online Converters — Cut Paper, Turn The Wheel

Your all-in-one toolkit for time zone conversions, cron expression generation, unit calculations, timestamp parsing, and text transformations. Free, fast, and works right in your browser.

Converters folderfifteen sheets pinned · nothing leaves the board

All the converters you need

Every sheet is a real tool — no placeholders, no simulation

Time & Timezone

Convert times between 14 major world timezones. Perfect for scheduling across global teams.

Open sheet

Cron Expression

Build and validate cron expressions with an intuitive interface and human-readable descriptions.

Open sheet

Unit Converter

Convert length, weight, temperature, speed, and data sizes with precision.

Open sheet

Date & Timestamp

Parse Unix timestamps and convert between date formats instantly.

Open sheet

Text Utilities

Transform text case, encode/decode Base64, URL, and HTML strings.

Open sheet

Color Converter

Convert between HEX, RGB, HSL, and CMYK color formats with live preview.

Open sheet

Number Base

Convert between Binary, Decimal, Hexadecimal, and Octal number systems.

Open sheet

Hash Generator

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text.

Open sheet

Password Generator

Create secure random passwords and memorable passphrases.

Open sheet

UUID Generator

Generate RFC 4122 v4 and v7 UUIDs in bulk, with copy-to-board.

Open sheet

File Converter

Convert images between PNG, JPG, and WebP right in your browser — nothing uploaded.

Open sheet

PDF Toolkit

Merge, split, and rotate PDFs right in your browser — no uploads, nothing leaves the board.

Open sheet

JSON ⇄ YAML ⇄ XML

Convert between structured text formats with a hand-rolled parser — nothing leaves the board.

Open sheet

Markdown ⇄ HTML

Render Markdown to HTML and back with a hand-rolled parser — nothing leaves the board.

Open sheet

Diff / Line Compare

Compare two texts line by line and see exactly what changed — added and removed lines stamped clearly.

Open sheet
The board's rules

Nothing Leaves The Board

All conversions happen in your browser. No uploads, no servers, no copies kept.

Crank, Don't Wait

Results stamp in as you type. No page reloads, no queue to sit in.

Works Off Any Folder

No install required. Open a sheet on any device with a browser.