Browse the tool catalog | Page 230 | Elysia Tools

Elysia Tools

Browse tools, examples, visual explainers, and topic guides from one clear workspace.

Top Categories

Hubs

Language

ZH ES PT RU FR DE EN

Elysia Tools

Navigation

Tools

Browse the tool catalog | Page 230

Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context. Page 230.

Previous 227 228 229 230 231 232 233 Next

Math, Date & Finance639

Calculators, numerics, date logic, statistics, and finance tools

Images, Audio & Video600

Image, audio, and video processing, conversion, and optimization tools

Design & Color294

Color, layout, graphics, visual styling, and design helper tools

Text & Writing206

Writing, cleanup, formatting, extraction, and text analysis tools

Developer & Web189

Developer utilities, networking, web debugging, and automation helpers

Conversion & Encoding172

Format, file, archive, unit, and encoding conversion tools

Excel Formula Engineering

Absorbance Quantification and Acid-Base Calculations

JSON Structure Surgery

Tabular Data Cleanup, Shaping, and Normalization

Professional Assembly of an Excel Workbook

Docs Pricing About Terms of Service Privacy Policy Contact

Health

Macro Calculator (Carbs / Protein / Fat Split)

Convert a daily calorie target into grams of carbohydrate, protein and fat. Pick a preset split — balanced (50/30/20), low-carb (35/40/25), keto (10/20/70) or high-protein (40/35/25) — or define your own percentages.

Games

Magic 8 Ball

The classic Magic 8 Ball. Ask any yes-or-no question, shake, and get one of 20 traditional answers (yes / no / uncertain). Classic English phrases or localized translations.

Games

Mastermind Game

Classic Mastermind code-breaking game. The computer picks a secret color code; you guess row by row. Black pegs = right color and position; white pegs = right color, wrong position.

Data Processing

Number Combination Duplicate Finder

Paste multiple number combinations and find which numbers repeat across the whole set, with occurrence counts and group positions.

Security

Nonce & Token Generator

Generate cryptographically secure one-time tokens for web security scenarios — CSRF tokens, OAuth/OIDC state parameters, session nonces, and PKCE code_verifier/code_challenge (S256). Uses crypto.randomBytes, never Math.random.

Validation

Luhn Checksum Calculator

Validate or generate numbers using the Luhn algorithm (mod-10). Works for credit cards, IMEI, IMEISV, SIN, NPI and any custom Luhn-based identifier.

Format Conversion

Markdown TOC Generator

Generate a table of contents from Markdown headings with GitHub-style anchor links

Math & Numbers

Ohm's Law and Power Triangle Calculator

Solve for two unknowns among Voltage, Current, Resistance and Power from any two given values, with visual triangles and AC power-factor support

Network

MAC OUI Vendor Lookup

Look up the manufacturer of a MAC address from the IEEE OUI database, or reverse-search a company name to list all its OUI blocks — fully offline

Design

OKLCH Color Converter

Convert bidirectionally between HEX, RGB, HSL, OKLCH and Display-P3 using CSS Color 4 math, with gamut checks and out-of-gamut clipping suggestions

Media

Convert NRW to JPEG

Convert Nikon NRW RAW files to JPEG format. Automatically extracts image dimensions and metadata from the RAW file.

Media

Convert NRW to PNG

Convert Nikon NRW RAW files to PNG format. Automatically extracts image dimensions and metadata from the RAW file.