{
  "name": "3Q工具箱",
  "url": "https://3qtools.cn",
  "description": "在线实用工具站，共 260 个工具。当前对外开放 47 个计算内核的 JSON 接口，覆盖房贷车贷、个税与社保、劳动权益赔偿、单位换算、健康与日期计算等。全部无需鉴权、免费调用，计算在服务端完成，不依赖浏览器。",
  "provider": {
    "name": "3Q工具箱",
    "url": "https://3qtools.cn"
  },
  "version": "1.0.0",
  "updated": "2026-10-17",
  "language": "zh-CN",
  "endpoints": {
    "index": "https://3qtools.cn/api/calc",
    "llms": "https://3qtools.cn/llms.txt",
    "sitemap": "https://3qtools.cn/sitemap.xml"
  },
  "auth": {
    "type": "none",
    "note": "无需 API Key，无需注册"
  },
  "billing": {
    "model": "free",
    "note": "当前全部接口免费"
  },
  "rate_limit": {
    "scope": "per_ip",
    "capacity": 60,
    "refill": "5/s",
    "on_exceeded": "HTTP 429，响应头带 Retry-After（秒）"
  },
  "usage": {
    "discover": "GET https://3qtools.cn/api/calc —— 返回全部内核清单与调用说明",
    "schema": "GET https://3qtools.cn/api/calc/<id>/schema —— 返回该内核的参数定义（类型、默认值、范围、枚举）",
    "call": "GET https://3qtools.cn/api/calc/<id>?<参数>；数组参数改用 POST https://3qtools.cn/api/calc/<id>（JSON body）",
    "response_ok": "{ \"ok\": true, \"id\": \"...\", \"input\": {...}, \"result\": {...} }",
    "response_err": "{ \"ok\": false, \"error\": { \"code\": \"...\", \"message\": \"...\" } }",
    "errors": {
      "400": "传了未声明的参数（合法参数见该内核的 schema）",
      "404": "内核 id 不存在（清单见 /api/calc）",
      "422": "参数校验不通过，错误信息里会给出合法取值",
      "429": "触发限流，按 Retry-After 退避后重试"
    },
    "note": "建议先拉 /schema 再调用；参数单位固定：金额=元，利率=百分数（4.1 表示 4.1%），年限=年，期限=月，长度=厘米，体重=公斤。"
  },
  "capabilities": [
    {
      "id": "annual-tax-settlement",
      "name": "综合所得年度汇算",
      "description": "按全年综合所得算应补或应退税额，内置七级税率与专项附加扣除",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/annual-tax-settlement",
      "schema": "https://3qtools.cn/api/calc/annual-tax-settlement/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/annual-tax-settlement"
    },
    {
      "id": "area-volume-converter",
      "name": "面积与体积换算",
      "description": "平方米、亩、公顷、平方尺、立方米、升、加仑互换",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/area-volume-converter",
      "schema": "https://3qtools.cn/api/calc/area-volume-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/area-volume-converter"
    },
    {
      "id": "base-converter",
      "name": "进制转换",
      "description": "二进制、八进制、十进制和十六进制数字转换",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/base-converter",
      "schema": "https://3qtools.cn/api/calc/base-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/base-converter"
    },
    {
      "id": "bmi-calculator",
      "name": "BMI 与基础代谢计算",
      "description": "算BMI、体脂率、基础代谢、每日热量与饮水量",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/bmi-calculator",
      "schema": "https://3qtools.cn/api/calc/bmi-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/bmi-calculator"
    },
    {
      "id": "bonus-tax-calculator",
      "name": "年终奖计税方式对比",
      "description": "对比年终奖单独计税与并入综合所得，算出哪种更省税",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/bonus-tax-calculator",
      "schema": "https://3qtools.cn/api/calc/bonus-tax-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/bonus-tax-calculator"
    },
    {
      "id": "business-income-tax",
      "name": "经营所得个人所得税",
      "description": "按五级超额累进算个体户经营所得，含减半优惠与业主扣除",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/business-income-tax",
      "schema": "https://3qtools.cn/api/calc/business-income-tax/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/business-income-tax"
    },
    {
      "id": "byte-converter",
      "name": "数据存储单位换算",
      "description": "不同数据存储单位之间的相互转换",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/byte-converter",
      "schema": "https://3qtools.cn/api/calc/byte-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/byte-converter"
    },
    {
      "id": "car-loan-calculator",
      "name": "车贷方案与真实年化成本",
      "description": "算月供与落地价，并反推贴息方案的真实年化利率",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/car-loan-calculator",
      "schema": "https://3qtools.cn/api/calc/car-loan-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/car-loan-calculator"
    },
    {
      "id": "child-growth-percentile",
      "name": "儿童身高体重百分位",
      "description": "按 WHO 标准算 Z 值与百分位，0-19 岁",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/child-growth-percentile",
      "schema": "https://3qtools.cn/api/calc/child-growth-percentile/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/child-growth-percentile"
    },
    {
      "id": "chinese-units-converter",
      "name": "中国传统市制单位换算",
      "description": "市斤、两、钱、亩、尺、丈、里、斗等市制单位换算",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/chinese-units-converter",
      "schema": "https://3qtools.cn/api/calc/chinese-units-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/chinese-units-converter"
    },
    {
      "id": "compound-interest-calculator",
      "name": "复利与定投计算",
      "description": "测算复利增长、定投收益与通胀后的实际购买力",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/compound-interest-calculator",
      "schema": "https://3qtools.cn/api/calc/compound-interest-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/compound-interest-calculator"
    },
    {
      "id": "date-calculator",
      "name": "日期计算",
      "description": "计算日期差、添加天数、计算星期几等日期相关计算",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/date-calculator",
      "schema": "https://3qtools.cn/api/calc/date-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/date-calculator"
    },
    {
      "id": "double-wage-claim",
      "name": "未签劳动合同二倍工资",
      "description": "算未签书面劳动合同可主张的二倍工资差额月数与金额",
      "category": "法律与劳动权益",
      "endpoint": "https://3qtools.cn/api/calc/double-wage-claim",
      "schema": "https://3qtools.cn/api/calc/double-wage-claim/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/double-wage-claim"
    },
    {
      "id": "exchange-rate-converter",
      "name": "汇率换算",
      "description": "覆盖160+币种的汇率换算工具，支持双向调换币种、查看汇率数值并手动填写汇率",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/exchange-rate-converter",
      "schema": "https://3qtools.cn/api/calc/exchange-rate-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/exchange-rate-converter"
    },
    {
      "id": "home-buying-total-cost",
      "name": "购房总成本总账",
      "description": "把首付、契税、维修基金、中介费、装修与月供算成一本总账",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/home-buying-total-cost",
      "schema": "https://3qtools.cn/api/calc/home-buying-total-cost/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/home-buying-total-cost"
    },
    {
      "id": "housing-fund-quota",
      "name": "公积金贷款额度测算",
      "description": "按余额倍数、还贷能力、房价成数与最高限额取低，算你能贷多少",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/housing-fund-quota",
      "schema": "https://3qtools.cn/api/calc/housing-fund-quota/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/housing-fund-quota"
    },
    {
      "id": "income-tax-calculator",
      "name": "个人所得税计算（月度预扣与年度汇算）",
      "description": "按累计预扣法算月度个税，支持专项附加扣除与年度汇算",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/income-tax-calculator",
      "schema": "https://3qtools.cn/api/calc/income-tax-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/income-tax-calculator"
    },
    {
      "id": "labor-arbitration-limitation",
      "name": "劳动仲裁时效计算",
      "description": "判断劳动争议仲裁时效还剩多久，区分欠薪与其他争议",
      "category": "法律与劳动权益",
      "endpoint": "https://3qtools.cn/api/calc/labor-arbitration-limitation",
      "schema": "https://3qtools.cn/api/calc/labor-arbitration-limitation/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/labor-arbitration-limitation"
    },
    {
      "id": "labor-income-tax",
      "name": "劳务报酬 / 稿酬 / 特许权使用费预扣预缴",
      "description": "算劳务报酬、稿酬、特许权使用费的预扣税额与汇算口径",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/labor-income-tax",
      "schema": "https://3qtools.cn/api/calc/labor-income-tax/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/labor-income-tax"
    },
    {
      "id": "length-converter",
      "name": "长度换算",
      "description": "不同长度单位之间的相互转换",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/length-converter",
      "schema": "https://3qtools.cn/api/calc/length-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/length-converter"
    },
    {
      "id": "lunar-calendar-converter",
      "name": "公历农历互转",
      "description": "公历农历互转，含生肖、星座、干支与二十四节气",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/lunar-calendar-converter",
      "schema": "https://3qtools.cn/api/calc/lunar-calendar-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/lunar-calendar-converter"
    },
    {
      "id": "mechanics-converter",
      "name": "力学单位与物理公式换算",
      "description": "力、压强、应力、力矩、能量等16类力学单位互换，并支持按公式跨物理量换算",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/mechanics-converter",
      "schema": "https://3qtools.cn/api/calc/mechanics-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/mechanics-converter"
    },
    {
      "id": "mortgage-calculator",
      "name": "房贷月供计算",
      "description": "计算房贷月供、总利息和还款计划",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/mortgage-calculator",
      "schema": "https://3qtools.cn/api/calc/mortgage-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/mortgage-calculator"
    },
    {
      "id": "non-compete-compensation",
      "name": "竞业限制补偿计算",
      "description": "算竞业限制期间每月补偿与总额，含法定下限与违约金风险",
      "category": "法律与劳动权益",
      "endpoint": "https://3qtools.cn/api/calc/non-compete-compensation",
      "schema": "https://3qtools.cn/api/calc/non-compete-compensation/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/non-compete-compensation"
    },
    {
      "id": "number-chinese-converter",
      "name": "数字与中文大小写转换",
      "description": "阿拉伯数字与中文大写数字相互转换，数字小写转大写",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/number-chinese-converter",
      "schema": "https://3qtools.cn/api/calc/number-chinese-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/number-chinese-converter"
    },
    {
      "id": "offer-package-compare",
      "name": "offer 总包对比",
      "description": "把多个offer的年包、五险一金与税后可支配放在一起比",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/offer-package-compare",
      "schema": "https://3qtools.cn/api/calc/offer-package-compare/schema",
      "method": [
        "GET",
        "POST"
      ],
      "page": "https://3qtools.cn/tools/offer-package-compare"
    },
    {
      "id": "overtime-pay-calculator",
      "name": "加班费计算",
      "description": "按1.5倍、2倍、3倍算工作日、休息日与法定节假日加班费",
      "category": "法律与劳动权益",
      "endpoint": "https://3qtools.cn/api/calc/overtime-pay-calculator",
      "schema": "https://3qtools.cn/api/calc/overtime-pay-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/overtime-pay-calculator"
    },
    {
      "id": "pregnancy-calculator",
      "name": "预产期与排卵期",
      "description": "推算预产期、孕周、产检时间表与排卵易孕窗口",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/pregnancy-calculator",
      "schema": "https://3qtools.cn/api/calc/pregnancy-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/pregnancy-calculator"
    },
    {
      "id": "prepayment-compare",
      "name": "房贷提前还款方案对比",
      "description": "算清缩短年限与减少月供哪个更省利息",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/prepayment-compare",
      "schema": "https://3qtools.cn/api/calc/prepayment-compare/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/prepayment-compare"
    },
    {
      "id": "probation-compensation",
      "name": "试用期违法补偿与赔偿",
      "description": "算试用期工资差额、违法约定与违法解除的赔偿金",
      "category": "法律与劳动权益",
      "endpoint": "https://3qtools.cn/api/calc/probation-compensation",
      "schema": "https://3qtools.cn/api/calc/probation-compensation/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/probation-compensation"
    },
    {
      "id": "property-transaction-tax",
      "name": "房产交易税费",
      "description": "算契税、增值税及附加与个人所得税，含满五唯一免征",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/property-transaction-tax",
      "schema": "https://3qtools.cn/api/calc/property-transaction-tax/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/property-transaction-tax"
    },
    {
      "id": "rent-vs-buy-calculator",
      "name": "租金与买房对比",
      "description": "算清租十年和买十年各花多少，附带平衡租金与租金回报率",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/rent-vs-buy-calculator",
      "schema": "https://3qtools.cn/api/calc/rent-vs-buy-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/rent-vs-buy-calculator"
    },
    {
      "id": "rental-invoice-tax",
      "name": "租房发票税点",
      "description": "算房东代开租金发票要交多少税，支持分项与综合征收率",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/rental-invoice-tax",
      "schema": "https://3qtools.cn/api/calc/rental-invoice-tax/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/rental-invoice-tax"
    },
    {
      "id": "retirement-age-calculator",
      "name": "延迟法定退休年龄计算",
      "description": "按出生年月算法定退休年龄，含弹性提前与延迟区间",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/retirement-age-calculator",
      "schema": "https://3qtools.cn/api/calc/retirement-age-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/retirement-age-calculator"
    },
    {
      "id": "roman-numeral-converter",
      "name": "罗马数字转换",
      "description": "阿拉伯数字与罗马数字互转，含拆解过程与书写规则",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/roman-numeral-converter",
      "schema": "https://3qtools.cn/api/calc/roman-numeral-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/roman-numeral-converter"
    },
    {
      "id": "salary-slip",
      "name": "工资条与累计预扣法个税",
      "description": "按累计预扣法算五险一金、个税与实发工资",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/salary-slip",
      "schema": "https://3qtools.cn/api/calc/salary-slip/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/salary-slip"
    },
    {
      "id": "severance-calculator",
      "name": "离职经济补偿与赔偿金计算",
      "description": "按工作年限与月薪算N、N+1、2N，遇到违法解除时给出赔偿金区间",
      "category": "法律与劳动权益",
      "endpoint": "https://3qtools.cn/api/calc/severance-calculator",
      "schema": "https://3qtools.cn/api/calc/severance-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/severance-calculator"
    },
    {
      "id": "sleep-calculator",
      "name": "睡眠周期计算",
      "description": "按睡眠周期倒推几点上床、几点起床",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/sleep-calculator",
      "schema": "https://3qtools.cn/api/calc/sleep-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/sleep-calculator"
    },
    {
      "id": "social-insurance-calculator",
      "name": "五险一金缴费",
      "description": "计算五险一金缴费金额，包括社保和公积金",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/social-insurance-calculator",
      "schema": "https://3qtools.cn/api/calc/social-insurance-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/social-insurance-calculator"
    },
    {
      "id": "special-deduction-detail",
      "name": "专项附加扣除明细与节税额",
      "description": "逐项算七项专项附加扣除，并算出这些扣除能少交多少税",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/special-deduction-detail",
      "schema": "https://3qtools.cn/api/calc/special-deduction-detail/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/special-deduction-detail"
    },
    {
      "id": "tax-inclusive-converter",
      "name": "含税价 / 不含税价换算",
      "description": "价税分离与合并，并对比加税点的两种算法差多少",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/tax-inclusive-converter",
      "schema": "https://3qtools.cn/api/calc/tax-inclusive-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/tax-inclusive-converter"
    },
    {
      "id": "temperature-converter",
      "name": "温度换算",
      "description": "摄氏度、华氏度、开尔文等多种温度单位转换",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/temperature-converter",
      "schema": "https://3qtools.cn/api/calc/temperature-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/temperature-converter"
    },
    {
      "id": "thirteenth-month-compare",
      "name": "第 13 薪两种发法对比",
      "description": "对比13薪并入工资与按年终奖单独计税，哪个到手更多",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/thirteenth-month-compare",
      "schema": "https://3qtools.cn/api/calc/thirteenth-month-compare/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/thirteenth-month-compare"
    },
    {
      "id": "timestamp-converter",
      "name": "Unix 时间戳转换",
      "description": "Unix时间戳与日期时间相互转换",
      "category": "数据换算工具",
      "endpoint": "https://3qtools.cn/api/calc/timestamp-converter",
      "schema": "https://3qtools.cn/api/calc/timestamp-converter/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/timestamp-converter"
    },
    {
      "id": "unit-price-compare",
      "name": "单位价格比价",
      "description": "把不同规格商品折算成每100g、每100mL或每件的价格",
      "category": "金融财税计算",
      "endpoint": "https://3qtools.cn/api/calc/unit-price-compare",
      "schema": "https://3qtools.cn/api/calc/unit-price-compare/schema",
      "method": [
        "GET",
        "POST"
      ],
      "page": "https://3qtools.cn/tools/unit-price-compare"
    },
    {
      "id": "work-injury-compensation",
      "name": "工伤赔偿计算",
      "description": "按伤残等级算一次性伤残补助金、医疗与就业补助金及工亡待遇",
      "category": "法律与劳动权益",
      "endpoint": "https://3qtools.cn/api/calc/work-injury-compensation",
      "schema": "https://3qtools.cn/api/calc/work-injury-compensation/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/work-injury-compensation"
    },
    {
      "id": "work-seniority-calculator",
      "name": "工龄与法定年休假计算",
      "description": "算累计工龄、司龄、法定年休假与社保缴费月数",
      "category": "法律与劳动权益",
      "endpoint": "https://3qtools.cn/api/calc/work-seniority-calculator",
      "schema": "https://3qtools.cn/api/calc/work-seniority-calculator/schema",
      "method": [
        "GET"
      ],
      "page": "https://3qtools.cn/tools/work-seniority-calculator"
    }
  ]
}