word | | Exchange rates |
| BBD | Barbados | Barbadian dollars (BBD) per US dollar - 2 (2011 est.) 2 (2010 est.) |
| BDT | Bangladesh | taka (BDT) per US dollar - 73.7 (2011 est.) 69.65 (2010 est.) 69.04 (2009) 68.554 (2008) 69.893 (2007) |
| became | Ecuador | the US dollar became Ecuador's currency in 2001 |
| Belarusian | Belarus | Belarusian rubles (BYB/BYR) per US dollar - 4,351.1 (2011 est.) 2,978.51 (2010 est.) 2,789.49 (2009) 2,130 (2008) 2,145 (2007) |
| Belizean | Belize | Belizean dollars (BZD) per US dollar - 2 (2011 est.) 2 (2010 est.) 2 (2009) 2 (2008) 2 (2007) |
| Bermudian | Bermuda | Bermudian dollars (BMD) per US dollar - 1 (2011) note: (fixed rate pegged to the US dollar) |
| BGN | Bulgaria | leva (BGN) per US dollar - 1.39 (2011 est.) 1.4732 (2010 est.) 1.404 (2009) 1.3171 (2008) 1.4366 (2007) |
| BHD | Bahrain | Bahraini dinars (BHD) per US dollar - 0.376 (2011 est.) 0.376 (2010 est.) 0.376 (2009) 0.376 (2008) 0.376 (2007) |
| BIF | Burundi | Burundi francs (BIF) per US dollar - 1,251.3 (2011 est.) 1,138.25 (2010 est.) 1,230.18 (2009) 1,198 (2008) 1,065 (2007) |
| birr | Ethiopia | birr (ETB) per US dollar - 17.2 (2011 est.) 14.41 (2010 est.) 11.78 (2009) 9.57 (2008) 8.96 (2007) |
| BMD | Bermuda | Bermudian dollars (BMD) per US dollar - 1 (2011) note: (fixed rate pegged to the US dollar) |
| BND | Brunei | Bruneian dollars (BND) per US dollar - 1.24 (2011) 1.36 (2010 est.) 1.45 (2009) |
| BOB | Bolivia | bolivianos (BOB) per US dollar - 6.983 (2011 est.) 7.07 (2010 est.) 7.07 (2009) 7.253 (2008) 7.8616 (2007) |
| bolivars | Venezuela | bolivars (VEB) per US dollar - 4.428 (2011 est.) 4.1336 (2010 est.) 2.147 (2009) 2.147 (2008) 2,147 (2007) |