Federal Per Diem Rates: Foreign
U.S. Department of State rates. Includes federal travel regulations.

Federal Per Diem Rates: Domestic
Provided by the U.S. General Services Administration. A clickable map that provides rates by state and individual city.

Foreign Currency Conversion Rates
Oanda.com multilingual converter for 164 currencies.

Mileage & Distances
Google Maps directions between destinations.

Travel Expense Voucher
Fillable spreadsheet form for submitting travel advance reconciliations or foreign wire transfer requests.
Note: You will need Microsoft Excel to open this spreadsheet.

U.S. Department of State: Consular Affairs
Site for general information for travel tips, passports and visas.