Free Online Tools

20+ free online tools for travel, finance, developers, and daily life. No signup required.

Travel

Tax Free Calculator

Calculate your tax refund for Japan, Europe, Thailand and more.

IC Card Guide

Compare Suica, ICOCA, Pasmo and other Asian transit cards.

Voltage & Plug Guide

Check voltage, frequency and plug types by country.

Japan Address Guide

Understand Japanese address structure, prefectures, and postal codes.

Korea Train Guide

Compare KTX, SRT fares, travel times and station info.

Finance & Tax

Severance Pay Calculator

Calculate Korean severance pay and tax.

Jeonse-Wolse Converter

Convert between Korean Jeonse and Wolse.

Acquisition Tax Calculator

Calculate Korean property acquisition tax.

Electricity Calculator

Calculate Korean electricity bill with progressive rates.

Developer

Crontab Generator

Generate and validate cron expressions with ease.

SVG to ICO Converter

Convert SVG files to multi-size ICO favicons.

OG Tag Preview

Preview Open Graph tags for social media sharing.

Korea

Business Registration Checker

Check Korean business registration status.

Korea Map Code

Get map coordinates for Korean addresses.

Military Service Calculator

Calculate Korean military service discharge date.

Korean Holidays

Korean public holidays and bridge day planner.

Global

Shoe Size Converter

Convert shoe sizes between US, EU, UK, JP, KR systems.

Ring Size Converter

Convert ring sizes between US, EU, UK, JP, KR systems.

Paper Size Comparison

Compare paper sizes: A4, Letter, Legal and more.

Clothing Size Converter

Convert clothing sizes between international systems.