JPY-KRW Converter

Convert JPY and Korean Won instantly. Set your own rate. Works offline.

Convert between Japanese Yen (JPY) and Korean Won (KRW) quickly, with a clean and simple interface.

You set the exchange rate yourself, so the app works entirely offline — no network needed once your rate is saved.

MAIN FEATURES

Two-way conversion
Enter an amount in JPY or KRW and see the other currency instantly. Tap the swap button to switch direction.

Set your own rate
Enter how many KRW equal 100 JPY. Your rate is saved and reused every time you open the app.

Quick amount buttons
Frequently used amounts are one tap away. Choose whether larger amounts appear first.

Automatic thousands separators
Long numbers are formatted as you type (1,234,567), so amounts stay readable.

Adjustable text size
Make the numbers as large as you need — comfortable for every age.

Works offline
No external rate API. Once your rate is set, conversion works with no connection at all.

Light and dark themes
Follows your system setting, or pick light or dark yourself.

PERFECT FOR

Travelers
Check prices while shopping or dining, and know what you are really paying.

Shoppers buying from abroad
Compare overseas prices against KRW before you order.

Business and trade
Handle quotes and invoices between the two currencies without a calculator.

Students and expats
Manage tuition, rent and living costs across both currencies.

Anyone who wants a fast, no-nonsense currency converter with no account and no sign-up.

This app converts using the rate you enter yourself and does not fetch rates from any external service.