Online Calculator Tools 在线计算工具集

Supports equal payment and equal principal methods. Calculates monthly payment, total interest and amortization schedule. 支持等额本息与等额本金两种方式，计算月供、总利息与还款明细。

Real-time exchange rate conversion supporting CNY, USD, EUR, JPY and other major currencies. 实时汇率换算，支持人民币、美元、欧元、日元等主流货币互转。

Calculates annual and monthly income tax based on latest progressive tax brackets, with social insurance deductions. 按最新综合所得税率表计算年度与月度应纳个税，支持五险一金扣除。

Calculates Body Mass Index with health category, supports metric and imperial units. 计算身体质量指数并给出健康区间，支持公制与英制单位。

Accurate age calculation to the day, with zodiac, star sign and next birthday countdown. 精确到天的年龄计算，附带生肖、星座与下次生日倒计时。

Calculate days between two dates, or add/subtract days and workdays from a date. 计算两个日期间隔天数，或日期加减天数/工作日。

Convert length, weight, temperature, area, volume and more between units. 长度、重量、温度、面积、体积等多类单位互转换算。