yen to idr1 JPY to IDR Currency Converter. Convert Yen to Rupiah with real time currency rates based on up-to-the1 JPY to IDR stats. The performance of JPY to IDR in the last 30 days saw a 30 day hh of 118.3690 and a 30 day low of 112.6230. This means the 30 day average was 114.7174.