word | | Exchange rates |
| dollar | Seychelles | Seychelles rupees (SCR) per US dollar - 12.26 (2011 est.) 12.068 (2010 est.) 13.61 (2009) 8 (2008) 6.5 (2007) |
| dollar | Sierra Leone | leones (SLL) per US dollar - 4,400 (2011 est.) 3,978.09 |
| dollar | Singapore | Singapore dollars (SGD) per US dollar - 1.234 (2011 est.) 1.3635 (2010 est.) 1.4545 (2009) 1.415 (2008) 1.507 (2007) |
| dollar | Sint Maarten | Netherlands Antillean guilders (ANG) per US dollar - 1.79 (2010) 1.79 (2009) 1.79 (2008) 1.79 (2007) |
| dollar | Slovakia | euros (EUR) per US dollar - 0.7107 (2011 est.) 0.755 (2010 est.) 0.7198 (2009 est.) 0.6827 (2008 est.) 0.7345 (2007 est.) |
| dollar | Slovenia | euros (EUR) per US dollar - 0.7107 (2011 est.) 0.755 (2010 est.) 0.7198 (2009 est.) 0.6827 (2008 est.) 0.7345 (2007 est.) |
| dollar | Solomon Islands | Solomon Islands dollars (SBD) per US dollar - 7.855 (2011 est.) 8.07 |
| dollar | Somalia | Somali shillings (SOS) per US dollar - NA |
| dollar | South Africa | rand (ZAR) per US dollar - 7.164 (2011 est.) 7.32 (2010 est.) 8.42 (2009) 7.9576 (2008) 7.05 (2007) |
| dollar | Spain | euros (EUR) per US dollar - 0.7107 (2011 est.) 0.755 (2010 est.) 0.7198 (2009 est.) 0.6827 (2008 est.) 0.7345 (2007 est.) |
| dollar | Sri Lanka | Sri Lankan rupees (LKR) per US dollar - 112 (2011 est.) 113.06 (2010 est.) 114.95 (2009) 108.33 (2008) 110.78 (2007) |
| dollar | Sudan | Sudanese pounds (SDG) per US dollar - 2.8 (2011 est.) 2.31 (2010 est.) 2.3 (2009) 2.1 (2008) 2.06 (2007) |
| dollar | Suriname | Surinamese dollars (SRD) per US dollar - 3.25 (2011 est.) 2.75 (2010 est.) 2.745 (2009) 2.745 (2008) 2.745 (2007) |
| dollar | Svalbard | Norwegian kroner (NOK) per US dollar - 5.432 (2011) 6.044 (2010) 6.288 (2009) |