kwhmate

Free, no-key calculators with sources, for AI assistants. - **Electricity bills & LED savings**: Korea (KEPCO), Taiwan (Taipower), Philippines (Meralco, updated monthly), Japan (TEPCO) - **Korea travel**: Seoul and Busan taxi fares (day / late night), tourist tax refund estimates, domestic trip budget - **Korean tax & education**: CSAT (Suneung) score, school grade (naesin), GPA conversion, student loan repayment, education tax credit, report-reward estimates 19 read-only tools using the same