sgd to idrAs of 15:00PM UTC , one singapore dollar equals Rp12,648.02 (twelve thousand six hundred forty-eht rupiahs). We use the mid-market rate for SGD to IDR conversion. The current exchange rate is 12648.0167. Indonesian1 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 average was 12,717.7033. The change for SGD to IDR was -0.95.