SGD/VND: what to know
The SGD/VND rate shows how much VND you get for 1 SGD. Right now, 1 SGD buys 20,082.59 VND at the mid-market rate. In the other direction, 1 VND is worth 0.0000497944 SGD.
In the short term SGD is driven mainly by the MAS-managed currency basket, while VND responds to exports and central-bank policy.
The Singapore Dollar (SGD) is issued by Monetary Authority of Singapore. The Singapore and Brunei dollars are interchangeable at par. The Vietnamese Dong (VND) is issued by State Bank of Vietnam. The đồng has very high denominations — notes go up to 500,000.
Use this mid-market figure as your benchmark: compare it with the rate your bank or broker quotes, and the difference is the margin you would pay.