Korea & Asia Everyday Calculators (kWhmate)

Measured conclusion: Deep-tested. L2 outcome: tools_ok.

Free calculators with sources: electricity bills (KR/TW/PH/JP), Korea taxi fares, tax refunds.

Add to your agent

Copy this into your MCP client config:

{
  "mcpServers": {
    "Korea & Asia Everyday Calculators (kWhmate)": {
      "url": "https://kwhmate.com/api/mcp",
      "transport": "streamable-http"
    }
  }
}

Measured tools (19)

• kr_electricity read-only

  Korea household electricity bill (KEPCO residential low-voltage, progressive tiers). Same code as https://kwhmate.com/ko/electricity-bill/. Reference: 기준: 2026년 4분기 요금 · 출처: 한국전력공사 주택용 전력(저압) 요금표. Returns an estimate with the source and page URL.

  Parameters:

  • kwh (required) — number — Monthly usage in kWh
  • season — string — summer = July–August tiers

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• kr_led_savings read-only

  Korea LED replacement savings (household tiers or shop unit price). Same code as https://kwhmate.com/ko/led-savings/. Reference: 기준: 2026년 한전 주택용 저압 요금표(기타 계절) · 가게·사무실은 고지서 단가 직접 입력. Returns an estimate with the source and page URL.

  Parameters:

  • mode — string — home = KEPCO progressive tiers, shop = unit_price × kWh
  • count — integer
  • led_cost — number
  • new_watts — number
  • old_watts — number
  • other_kwh — number — home: monthly use without these lights
  • unit_price — number — shop: KRW per kWh
  • hours_per_day — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• tw_electricity read-only

  Taiwan electricity bill (Taipower residential progressive rates). Same code as https://kwhmate.com/tw/electricity-bill/. Reference: 依據：台灣電力公司 2025年10月1日起實施之住宅用累進電價（2026年電價審議會凍漲）. Returns an estimate with the source and page URL.

  Parameters:

  • kwh (required) — number
  • summer — boolean — June–September rates
  • bimonthly — boolean — two-month bill (brackets doubled)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• tw_led_savings read-only

  Taiwan LED replacement savings (Taipower non-summer, monthly brackets). Same code as https://kwhmate.com/tw/led-savings/. Reference: 依據：台電住宅用累進電價（非夏月、單月級距）. Returns an estimate with the source and page URL.

  Parameters:

  • count — integer — Number of lights
  • led_cost — number — Total cost of the LEDs (optional, for payback)
  • new_watts — number — Watts of one LED
  • old_watts — number — Watts of one old bulb/tube
  • other_kwh — number — Other monthly household use without these lights (kWh)
  • hours_per_day — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• ph_meralco read-only

  Philippines Meralco bill (this month's residential rate). Same code as https://kwhmate.com/ph/meralco-bill-calculator/. Reference: Source: Meralco rate announcement for October 2026 · lifeline discounts and local taxes not included. Returns an estimate with the source and page URL.

  Parameters:

  • kwh (required) — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• ph_led_savings read-only

  Philippines LED replacement savings (Meralco rates). Same code as https://kwhmate.com/ph/led-savings/. Reference: Rates: Meralco residential rates, October 2026. Returns an estimate with the source and page URL.

  Parameters:

  • count — integer — Number of lights
  • led_cost — number — Total cost of the LEDs (optional, for payback)
  • new_watts — number — Watts of one LED
  • old_watts — number — Watts of one old bulb/tube
  • other_kwh — number — Other monthly household use without these lights (kWh)
  • hours_per_day — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• jp_electricity read-only

  Japan electricity bill (TEPCO Juryo Dento B). Same code as https://kwhmate.com/jp/electricity-bill/. Reference: 出典：東京電力エナジーパートナー「従量電灯B・C」・燃料費調整単価等一覧、経済産業省「2026年度の賦課金単価」. Returns an estimate with the source and page URL.

  Parameters:

  • kwh (required) — number
  • amperes — integer
  • fuel_adjustment — number — Fuel cost adjustment, yen per kWh (default: this month)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• jp_led_savings read-only

  Japan LED replacement savings (TEPCO Juryo Dento B, 30 A). Same code as https://kwhmate.com/jp/led-savings/. Reference: 出典：東京電力エナジーパートナー「従量電灯B」. Returns an estimate with the source and page URL.

  Parameters:

  • count — integer — Number of lights
  • led_cost — number — Total cost of the LEDs (optional, for payback)
  • new_watts — number — Watts of one LED
  • old_watts — number — Watts of one old bulb/tube
  • other_kwh — number — Other monthly household use without these lights (kWh)
  • hours_per_day — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• seoul_taxi read-only

  Seoul taxi fare (regular mid-size taxi meter estimate). Same code as https://koreasurvivalkit.com/taxi-fare-calculator/. Reference: Source: Seoul Metropolitan Government, mid-size taxi fares in effect since 1 February 2023 (checked September 2026). Returns an estimate with the source and page URL.

  Parameters:

  • km (required) — number
  • hour — integer — Departure hour (late-night surcharge)
  • outside_seoul — boolean
  • slow_traffic_minutes — number — Minutes at 15 km/h or less

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• busan_taxi read-only

  Busan taxi fare (regular mid-size taxi meter estimate). Same code as https://koreasurvivalkit.com/busan-taxi-fare-calculator/. Reference: Source: Busan Metropolitan City, taxi fares in effect since 1 June 2023 (checked September 2026). Returns an estimate with the source and page URL.

  Parameters:

  • km (required) — number
  • hour — integer
  • outside_busan — boolean
  • slow_traffic_minutes — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• korea_tax_refund read-only

  Korea tourist tax (VAT) refund estimate. Same code as https://koreasurvivalkit.com/tax-refund-calculator/. Reference: Sources checked October 2026: VISITKOREA, Korea.net, Incheon Airport, Visit Seoul. Returns an estimate with the source and page URL.

  Parameters:

  • amounts (required) — array — Receipt amounts in KRW (one per store receipt)
  • store — string — instant = store offers instant refund at the till
  • stay_days — integer

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• suneung_score read-only

  수능 표준점수·등급 (Korean CSAT standard score and grade). Same code as https://gyesanmate.com/suneung-score/. Reference: 기준: 2027학년도 수능(한국교육과정평가원) · 실제 등급컷은 해마다 채점 결과로 달라짐. Returns an estimate with the source and page URL.

  Parameters:

  • sd — number
  • raw — number
  • mean — number
  • subject — string — main = 국어·수학, inquiry = 탐구·제2외국어/한문
  • percentile — number
  • english_raw — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• naesin_grade read-only

  내신 등급 (Korean high-school class rank → grade, 5- or 9-grade system). Same code as https://gyesanmate.com/naesin-grade/. Reference: 기준: 고교 내신 상대평가 누적 비율 · 최종 등급은 학교 성적표 기준. Returns an estimate with the source and page URL.

  Parameters:

  • rank (required) — integer
  • students (required) — integer
  • ties — integer — 동석차 수(본인 포함)
  • system — string — five = 2025 입학생부터, nine = 2024 이전

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• gpa_converter read-only

  학점 비례 환산 (GPA scale conversion 4.5 / 4.3 / 4.0). Same code as https://gyesanmate.com/gpa-converter/. Reference: 기준: 단순 비례 환산(참고용) · 학교·기업마다 환산식이 다르므로 지원처 기준이 우선. Returns an estimate with the source and page URL.

  Parameters:

  • score (required) — number
  • to_scale — number
  • from_scale — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• student_loan read-only

  학자금대출 상환 (Korean student loan: standard repayment or income-contingent ICL). Same code as https://gyesanmate.com/student-loan-repayment/. Reference: 출처: 교육부고시 제2026-12호(2026학년도 2학기, 시행 2026.7.1) · 상환율은 최신 공지 확인. Returns an estimate with the source and page URL.

  Parameters:

  • type — string
  • degree — string
  • principal — number
  • defer_years — integer
  • repay_years — integer
  • gross_salary — number — icl: annual gross salary
  • rate_percent — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• education_tax_credit read-only

  교육비 세액공제 (Korean education expense tax credit, 2026 spending). Same code as https://gyesanmate.com/education-tax-credit/. Reference: 출처: 소득세법 제59조의4, 2025년 세법개정(2025.12 국회 통과). Returns an estimate with the source and page URL.

  Parameters:

  • items (required) — array — Per person: "kind:spend" in GET (e.g. school:3500000,college:8000000) or [{kind, spend}] in JSON
  • decided_tax — number — Expected decided tax (credit is capped at this)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• gap_investment read-only

  갭투자 실투자금 (Korean "gap" investment: acquisition tax, brokerage, cash needed). Same code as https://gyesanmate.com/gap-investment/. Reference: 출처: 지방세법 제13조의2(시행 2026.1.1)·제151조 · 1주택 세율·중개보수는 최신 공지 확인 · 투자 권유 아님. Returns an estimate with the source and page URL.

  Parameters:

  • price (required) — number
  • jeonse (required) — number
  • years — number
  • houses — integer — Number of homes after buying
  • over_85m2 — boolean
  • other_costs — number
  • adjusted_area — boolean
  • growth_percent — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• report_reward read-only

  신고 포상금·보상금 (Korean whistleblower rewards: tax evasion, hidden assets, card refusal, public interest, corruption). Same code as https://gyesanmate.com/reward/calculator/. Reference: 확인일 2026-10-12 · 출처: 국세기본법 시행령 제65조의4, 공익신고자 보호법 시행령 제22조, 부패방지권익위법 시행령 제77조 · 참고용 추정치. Returns an estimate with the source and page URL.

  Parameters:

  • amount (required) — number — KRW amount the reward is based on
  • kind — string — evasion = 탈세 제보(탈루세액등), hidden = 은닉재산(징수금액), card = 카드 결제 거부·현금영수증 미발급(거부금액), public = 공익신고, corruption = 부패신고(회복·증대 금액)

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

• travel_budget read-only

  국내 여행 예산 (Korea domestic trip budget: transport, stay, food, admission ranges). Same code as https://gyesanmate.com/travel-budget/. Reference: 확인일 KTX 2026-10-12·고속버스 2026-10-13 · 출처: 국토교통부 발표(KTX), KOBUS 시간표조회(고속버스) · 결과는 추정치. Returns an estimate with the source and page URL.

  Parameters:

  • to — string
  • fare — number — One-way fare per person you checked (empty = built-in fare: KTX Seoul–Busan and Yongsan–Gwangju-Songjeong base fares, and 9 Seoul express-bus routes from KOBUS)
  • from — string
  • mode — string
  • toll — number
  • rooms — integer
  • car_km — number
  • nights — integer
  • people — integer
  • food_max — number
  • food_min — number
  • stay_max — number
  • stay_min — number
  • bus_grade — string — Express bus class (normal / deluxe 우등 / premium 프리미엄) for the built-in Seoul routes
  • fuel_price — number
  • car_km_per_l — number
  • admission_max — number
  • admission_min — number

  Hints: read-only yes · destructive not declared · idempotent not declared · open-world no

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