sgd to idr1 SGD to IDR stats. The performance of SGD to IDR in the last 30 days saw a 30 day hh of 12,852.1000 and a 30 day low of 12,649.1000. This means the 30 day averageConvert SGD to IDR with the Western Union currency converter.Send Singapore Dollar and your receiver will get Indonesian Rupiah in minutes.