Korea & Asia Everyday Calculators (kWhmate)

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

Should I use this

Description quality

83%

Schema completeness

86%

Naming quality

80%

Poisoning risk

Permission match

100%

Protocol compliance

100%

Findings (31)

HIGHTool poisoning patterns detected
MEDIUMTool description contains URL to non-standard domainin kr_electricity
MEDIUMTool description contains URL to non-standard domainin kr_led_savings
MEDIUMTool description contains URL to non-standard domainin tw_electricity
MEDIUMTool description contains URL to non-standard domainin tw_led_savings
MEDIUMTool description contains URL to non-standard domainin ph_meralco
MEDIUMTool description contains URL to non-standard domainin ph_led_savings
MEDIUMTool description contains URL to non-standard domainin jp_electricity
MEDIUMTool description contains URL to non-standard domainin jp_led_savings
MEDIUMTool description contains URL to non-standard domainin seoul_taxi

Based on automated analysis of tool definitions and protocol compliance.

Context Cost

~5,147Tokens (tool definitions)

~1.5 KBTypical response size

Significant attention impact (4.02% of 128k context)

This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.

Install

One-Click Install

Add this to your `claude_desktop_config.json` file:

{
  "mcpServers": {
    "calculators": {
      "url": "https://kwhmate.com/api/mcp"
    }
  }
}

Remote endpoints

https://kwhmate.com/api/mcpstreamable-http

What it can do

Tool inventory

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.

Input Schema

{
  "type": "object",
  "properties": {
    "kwh": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000,
      "description": "Monthly usage in kWh",
      "default": 300
    },
    "season": {
      "type": "string",
      "enum": [
        "normal",
        "summer"
      ],
      "description": "summer = July–August tiers",
      "default": "normal"
    }
  },
  "required": [
    "kwh"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "count": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10000,
      "default": 10
    },
    "hours_per_day": {
      "type": "number",
      "minimum": 0,
      "maximum": 24,
      "default": 8
    },
    "old_watts": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000,
      "default": 64
    },
    "new_watts": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000,
      "default": 30
    },
    "mode": {
      "type": "string",
      "enum": [
        "home",
        "shop"
      ],
      "description": "home = KEPCO progressive tiers, shop = unit_price × kWh",
      "default": "home"
    },
    "other_kwh": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000,
      "description": "home: monthly use without these lights",
      "default": 250
    },
    "unit_price": {
      "type": "number",
      "minimum": 0,
      "maximum": 10000,
      "description": "shop: KRW per kWh",
      "default": 200
    },
    "led_cost": {
      "type": "number",
      "minimum": 0,
      "maximum": 10000000000,
      "default": 0
    }
  },
  "required": []
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "kwh": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000,
      "default": 300
    },
    "summer": {
      "type": "boolean",
      "description": "June–September rates",
      "default": false
    },
    "bimonthly": {
      "type": "boolean",
      "description": "two-month bill (brackets doubled)",
      "default": false
    }
  },
  "required": [
    "kwh"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "count": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10000,
      "description": "Number of lights",
      "default": 10
    },
    "hours_per_day": {
      "type": "number",
      "minimum": 0,
      "maximum": 24,
      "default": 8
    },
    "old_watts": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000,
      "description": "Watts of one old bulb/tube",
      "default": 60
    },
    "new_watts": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000,
      "description": "Watts of one LED",
      "default": 9
    },
    "other_kwh": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000,
      "description": "Other monthly household use without these lights (kWh)",
      "default": 300
    },
    "led_cost": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000000000,
      "description": "Total cost of the LEDs (optional, for payback)",
      "default": 0
    }
  },
  "required": []
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "kwh": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000,
      "default": 200
    }
  },
  "required": [
    "kwh"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "count": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10000,
      "description": "Number of lights",
      "default": 10
    },
    "hours_per_day": {
      "type": "number",
      "minimum": 0,
      "maximum": 24,
      "default": 8
    },
    "old_watts": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000,
      "description": "Watts of one old bulb/tube",
      "default": 60
    },
    "new_watts": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000,
      "description": "Watts of one LED",
      "default": 9
    },
    "other_kwh": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000,
      "description": "Other monthly household use without these lights (kWh)",
      "default": 200
    },
    "led_cost": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000000000,
      "description": "Total cost of the LEDs (optional, for payback)",
      "default": 0
    }
  },
  "required": []
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "kwh": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000,
      "default": 260
    },
    "amperes": {
      "type": "integer",
      "enum": [
        10,
        15,
        20,
        30,
        40,
        50,
        60
      ],
      "minimum": 10,
      "maximum": 60,
      "default": 30
    },
    "fuel_adjustment": {
      "type": "number",
      "minimum": -100,
      "maximum": 100,
      "description": "Fuel cost adjustment, yen per kWh (default: this month)",
      "default": -9.3
    }
  },
  "required": [
    "kwh"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "count": {
      "type": "integer",
      "minimum": 1,
      "maximum": 10000,
      "description": "Number of lights",
      "default": 10
    },
    "hours_per_day": {
      "type": "number",
      "minimum": 0,
      "maximum": 24,
      "default": 8
    },
    "old_watts": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000,
      "description": "Watts of one old bulb/tube",
      "default": 60
    },
    "new_watts": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000,
      "description": "Watts of one LED",
      "default": 9
    },
    "other_kwh": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000,
      "description": "Other monthly household use without these lights (kWh)",
      "default": 260
    },
    "led_cost": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000000000,
      "description": "Total cost of the LEDs (optional, for payback)",
      "default": 0
    }
  },
  "required": []
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "km": {
      "type": "number",
      "minimum": 0,
      "maximum": 500,
      "default": 10
    },
    "slow_traffic_minutes": {
      "type": "number",
      "minimum": 0,
      "maximum": 600,
      "description": "Minutes at 15 km/h or less",
      "default": 10
    },
    "hour": {
      "type": "integer",
      "minimum": 0,
      "maximum": 23,
      "description": "Departure hour (late-night surcharge)",
      "default": 14
    },
    "outside_seoul": {
      "type": "boolean",
      "default": false
    }
  },
  "required": [
    "km"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "km": {
      "type": "number",
      "minimum": 0,
      "maximum": 500,
      "default": 10
    },
    "slow_traffic_minutes": {
      "type": "number",
      "minimum": 0,
      "maximum": 600,
      "default": 10
    },
    "hour": {
      "type": "integer",
      "minimum": 0,
      "maximum": 23,
      "default": 14
    },
    "outside_busan": {
      "type": "boolean",
      "default": false
    }
  },
  "required": [
    "km"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "amounts": {
      "type": "array",
      "items": {
        "type": "number",
        "minimum": 0,
        "maximum": 1000000000
      },
      "maxItems": 50,
      "description": "Receipt amounts in KRW (one per store receipt)"
    },
    "store": {
      "type": "string",
      "enum": [
        "instant",
        "regular"
      ],
      "description": "instant = store offers instant refund at the till",
      "default": "instant"
    },
    "stay_days": {
      "type": "integer",
      "minimum": 1,
      "maximum": 3650,
      "default": 7
    }
  },
  "required": [
    "amounts"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "subject": {
      "type": "string",
      "enum": [
        "main",
        "inquiry"
      ],
      "description": "main = 국어·수학, inquiry = 탐구·제2외국어/한문",
      "default": "main"
    },
    "raw": {
      "type": "number",
      "minimum": 0,
      "maximum": 100
    },
    "mean": {
      "type": "number",
      "minimum": 0,
      "maximum": 100
    },
    "sd": {
      "type": "number",
      "minimum": 0,
      "maximum": 100
    },
    "percentile": {
      "type": "number",
      "minimum": 0,
      "maximum": 100
    },
    "english_raw": {
      "type": "number",
      "minimum": 0,
      "maximum": 100
    }
  },
  "required": []
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "system": {
      "type": "string",
      "enum": [
        "five",
        "nine"
      ],
      "description": "five = 2025 입학생부터, nine = 2024 이전",
      "default": "five"
    },
    "rank": {
      "type": "integer",
      "minimum": 1,
      "maximum": 100000
    },
    "ties": {
      "type": "integer",
      "minimum": 1,
      "maximum": 100000,
      "description": "동석차 수(본인 포함)",
      "default": 1
    },
    "students": {
      "type": "integer",
      "minimum": 1,
      "maximum": 100000
    }
  },
  "required": [
    "rank",
    "students"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "score": {
      "type": "number",
      "minimum": 0,
      "maximum": 4.5
    },
    "from_scale": {
      "type": "number",
      "enum": [
        4.5,
        4.3,
        4
      ],
      "minimum": 4,
      "maximum": 4.5,
      "default": 4.5
    },
    "to_scale": {
      "type": "number",
      "enum": [
        4.5,
        4.3,
        4
      ],
      "minimum": 4,
      "maximum": 4.5,
      "default": 4.3
    }
  },
  "required": [
    "score"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "enum": [
        "general",
        "icl"
      ],
      "default": "general"
    },
    "principal": {
      "type": "number",
      "minimum": 1,
      "maximum": 10000000000,
      "default": 10000000
    },
    "rate_percent": {
      "type": "number",
      "minimum": 0,
      "maximum": 30,
      "default": 1.7
    },
    "defer_years": {
      "type": "integer",
      "minimum": 0,
      "maximum": 30,
      "default": 2
    },
    "repay_years": {
      "type": "integer",
      "minimum": 1,
      "maximum": 30,
      "default": 10
    },
    "gross_salary": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000000000,
      "description": "icl: annual gross salary",
      "default": 35000000
    },
    "degree": {
      "type": "string",
      "enum": [
        "undergrad",
        "grad"
      ],
      "default": "undergrad"
    }
  },
  "required": []
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "items": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "kind": {
            "type": "string",
            "enum": [
              "self",
              "preschool",
              "school",
              "college",
              "disabled"
            ]
          },
          "spend": {
            "type": "number",
            "minimum": 0
          }
        },
        "required": [
          "kind",
          "spend"
        ]
      },
      "maxItems": 30,
      "description": "Per person: \"kind:spend\" in GET (e.g. school:3500000,college:8000000) or [{kind, spend}] in JSON"
    },
    "decided_tax": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000000000,
      "description": "Expected decided tax (credit is capped at this)"
    }
  },
  "required": [
    "items"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "price": {
      "type": "number",
      "minimum": 1,
      "maximum": 1000000000000
    },
    "jeonse": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000000000000
    },
    "houses": {
      "type": "integer",
      "minimum": 1,
      "maximum": 99,
      "description": "Number of homes after buying",
      "default": 1
    },
    "adjusted_area": {
      "type": "boolean",
      "default": false
    },
    "over_85m2": {
      "type": "boolean",
      "default": false
    },
    "other_costs": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000000000,
      "default": 0
    },
    "growth_percent": {
      "type": "number",
      "minimum": -50,
      "maximum": 50,
      "default": 0
    },
    "years": {
      "type": "number",
      "minimum": 0,
      "maximum": 50,
      "default": 0
    }
  },
  "required": [
    "price",
    "jeonse"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "kind": {
      "type": "string",
      "enum": [
        "evasion",
        "hidden",
        "card",
        "public",
        "corruption"
      ],
      "description": "evasion = 탈세 제보(탈루세액등), hidden = 은닉재산(징수금액), card = 카드 결제 거부·현금영수증 미발급(거부금액), public = 공익신고, corruption = 부패신고(회복·증대 금액)",
      "default": "evasion"
    },
    "amount": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000000000000000,
      "description": "KRW amount the reward is based on"
    }
  },
  "required": [
    "amount"
  ]
}

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.

Input Schema

{
  "type": "object",
  "properties": {
    "from": {
      "type": "string",
      "enum": [
        "서울",
        "부산",
        "대구",
        "대전",
        "광주",
        "인천",
        "기타"
      ],
      "default": "서울"
    },
    "to": {
      "type": "string",
      "enum": [
        "부산",
        "광주",
        "강릉",
        "경주",
        "전주",
        "여수",
        "대구",
        "대전",
        "목포",
        "제주",
        "기타"
      ],
      "default": "부산"
    },
    "nights": {
      "type": "integer",
      "minimum": 0,
      "maximum": 30,
      "default": 1
    },
    "people": {
      "type": "integer",
      "minimum": 1,
      "maximum": 30,
      "default": 2
    },
    "mode": {
      "type": "string",
      "enum": [
        "ktx",
        "bus",
        "car",
        "other"
      ],
      "default": "ktx"
    },
    "bus_grade": {
      "type": "string",
      "enum": [
        "normal",
        "deluxe",
        "premium"
      ],
      "description": "Express bus class (normal / deluxe 우등 / premium 프리미엄) for the built-in Seoul routes",
      "default": "normal"
    },
    "fare": {
      "type": "number",
      "minimum": 0,
      "maximum": 10000000,
      "description": "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)"
    },
    "car_km": {
      "type": "number",
      "minimum": 0,
      "maximum": 5000
    },
    "car_km_per_l": {
      "type": "number",
      "minimum": 0,
      "maximum": 100
    },
    "fuel_price": {
      "type": "number",
      "minimum": 0,
      "maximum": 10000
    },
    "toll": {
      "type": "number",
      "minimum": 0,
      "maximum": 1000000
    },
    "rooms": {
      "type": "integer",
      "minimum": 1,
      "maximum": 30
    },
    "stay_min": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000000
    },
    "stay_max": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000000
    },
    "food_min": {
      "type": "number",
      "minimum": 0,
      "maximum": 10000000
    },
    "food_max": {
      "type": "number",
      "minimum": 0,
      "maximum": 10000000
    },
    "admission_min": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000000
    },
    "admission_max": {
      "type": "number",
      "minimum": 0,
      "maximum": 100000000
    }
  },
  "required": []
}

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Oct 17, 2026, 10:32 AM UTCverifiedversion not recorded19 tools

Korea & Asia Everyday Calculators (kWhmate)

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