Farecard vending machines in one of the new Silver Line Metro stations. Robert Thomson/The Washington Post)

If you’re among the many Washington area residents eagerly awaiting Metro’s new Silver Line, you can now calculate how much your ride is going to cost based on a fare calculator the agency posted on its Web site Monday.

The calculator uses the new Metro fare structure that is set to take effect at the end of this month, when the transit authority begins its new fiscal year. Metro, which took control of the Silver Line from its builder last week, hopes to finish testing the line and open the four stations in Tysons and one in Reston within 90 days.

“Nothing has come up in the last week that puts off our schedule for opening the Silver Line this summer,” Metro’s assistant general manager for marketing, Lynn Bowersox, said Monday in a conference call with reporters

Metro projects that about 50,000 people will use the new line each weekday, about 33,000 of whom will be new Metro customers and not riders who currently use other subway lines.