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 averageCheck live exchange rates for 1 SGD to IDR with our SGD to IDR chart. Exchange Singapore dollars to Indonesian rupiahs at a great exchange rate with OFX. SGD to IDR trend.