- Per Diem formula
- Maps and Mileage
- World Currency Exchange Rate
- Tulsa International Airport Info/Internal Map
- Oklahoma Turnpike Maps and Tolls
- World Time Zone
MILEAGE AND PER DIEM RATE CHART
Use the ODOT Mileage Program to automatically calculate the mileage between cities.
Effective Jan. 1, 2013, the IRS has increased the standard mileage rate to .565 cents per mile for business miles.