Found 21 listed washrooms in bangalore, 21 free to use. Details are community supplied; conditions can change.
Hosur Road
17-1, Sepings Road Cross,Arunachala Mudaliar Road, Shivajinagar,Cole's Park- Taj Hotel
#426/12, 2 Cross,Mathikere Layout,Behind Canara Bank
No.1537/1, 9th Main Road, 3rd Block, Jayanagar
25/91, Chord Road, Iind Block, Rajajinagar
No. 60/3, Konappana Agrahara, OppositeInfosys Convention Centre
No3 Ist Cross Janabharathi Road Nagarabhvi Circle
#1222, 80, Feet Road, Chandra Layout
No. 30, Pavana Dhama, 80 Feet Main Road,Opposite Nilgiris,Padmanabha Nagar
71, 11Th Main Road, Opposite Malleshwaram Railway Station, Malleshwaram
110, 1st Main, Sbm Colony, Bsk 1st Stage Hanumantha Nagar
Devasandram Main Road Enterance, Krishnarajapuram
20th B Cross, Marenahalli Main Road, Vijayanagar
435, Acura Hospital, 18th Main, 6th Block, Koramangala
#795/1, 9Th Main ,Bsk 1st, Stage,2nd Block,Hanumantha Nagar
189, Shiva Complex, Shivananda Nagar, Near Vijay Bank, Moodalapalya
No. 6 / 1, Promenade Road, Behind Coles Park, Near Goodwill School
No.67,Link Road,Sheshadripuram
#27, Old Madras Road
2nd Main, Bsk 1st Stage, 80 Feet Road, Srinivasa Nagar,Sree Manjunatha Temple Street
No: 2, Sirur Park Road (Behind Natraja Theatre) Seshadripuram