Convenient All-in-One Web Tool Suite
Calculate net salary, 4 major insurances, and income tax tables in Korea.
Calculate net salary for US Paycheck, UK Salary, and France Brut-Net.
Calculate VAT-inclusive and VAT-exclusive tax amounts for Europe & UK.
Calculate state and local sales tax for US purchases.
Split bills per person across multiple currencies with rounding options.
Convert length, area, weight, volume, temperature, speed, fuel, data, and time units.
Calculate D-Day, days between two dates, and N days before/after.
Calculate Western/Korean age, Solar/Lunar conversion, Zodiac, and birthstones.
Calculate percentage ratios, discounts, and percentage changes.
Calculate Body Mass Index (BMI) and health classification.
Draw random winners, menu items, or lucky numbers with roulette wheel.
Convert Katakana, alphabets, and numbers between full-width and half-width.
Convert between Western years and Japanese Eras (Reiwa, Heisei, Showa) and calculate age.
Encode and decode plain text into URL-encoded format.
Encode and decode text into Base64 format with full UTF-8 support.
Validate, format, and minify raw JSON data.
Generate random secure passwords and UUID v4 identifiers.
Convert image formats, optimize file size, or adjust resolution.
Combine and convert multiple images into a single PDF document.
Edit SVG code, change colors, optimize, and convert to React JSX or PNG.
Deconstruct GIF frames, remove or reorder frames, adjust delay, and export new GIF.
Create and download animated loading GIFs with custom spin and bounce effects.
Generate instant QR codes for URLs and plain text.
Safely convert Excel, Word, PowerPoint, and HWP files to PDF directly in your browser without server upload.
Auto-detect document edges, flatten perspective, apply filters, and export to Image or PDF.
View, merge, split, and rotate PDF documents.
Edit and convert Markdown documents with live preview.
Safely view HWP/HWPX documents in your browser.
Safely view Excel, Word, and PowerPoint files in your browser.
Character/word counter, case converter, and duplicate line remover.