Android metrocard calculator.
MetroCalc helps NYC subway riders use up leftover metrocards by showing how much to add to end up with an even number of rides on your card.
For example, if you have a card with $0.50, MetroCalc will tell you that adding $9.35 will net you a 15% bonus of $1.40, for a new balance of $11.25 (exactly 5 rides).
These details are provided for information only. No information here is legal advice and should not be used as such.