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 12,647.7000. This means the 30 day averageOur currency converter will show you the current SGD to IDR rate and how it’s changed over the past day, week or month. Are you overpaying your bank? Banks often advertise free or