This can make a queen size mattress an even better possibility if your space isn't so spacious. Consequently, Singapore standard king size mattress is 72in by 75in (180cm by 190cm). Whilst the queen size is 60in by 75in (150cm by 190cm). Several variations for the queen size that might curiosity https://www.sleepspace.com.sg/blogs/news/mattress-sizes-in-singapore-the-definitive-dimensions-guide