💨 房贷提前还款计算器Extra Payment Mortgage Calculator
每月额外还款对利息与年限的影响。本地处理。可设置「本金」、「年利率 %」、「原年限」、「每月额外」。Effect of an extra monthly payment on interest and term. Processed locally. Settings: Principal, Annual rate %, Original years, Extra monthly.
使用说明与常见问题How-to & FAQ
「房贷提前还款计算器」是什么？What is the Extra Payment Mortgage Calculator tool?
每月额外还款对利息与年限的影响。本地处理。可设置「本金」、「年利率 %」、「原年限」、「每月额外」。Effect of an extra monthly payment on interest and term. Processed locally. Settings: Principal, Annual rate %, Original years, Extra monthly.
如何使用「房贷提前还款计算器」？How do I use the Extra Payment Mortgage Calculator tool?
在「房贷提前还款计算器」中，填写「本金」、「年利率 %」、「原年限」、「每月额外」等参数，结果会随输入实时计算并显示在下方。In the Extra Payment Mortgage Calculator: Fill in "Principal", "Annual rate %", "Original years", "Extra monthly"; results are recalculated instantly as you type.
怎么算？How?
等额本息；额外冲本金。Level amortization; extras go to principal.
能举个计算实例吗？Can you show a worked example?
例如在「房贷提前还款计算器」中填 本金 = 100000，年利率 % = 6，原年限 = 10，每月额外 = 0，结果区显示：原月供：1,110.21；含额外月供：1,110.21；原总利息：33,224.33；新总利息：33,224.33；节省利息：0.00；提前月数：0For example, entering Principal = 100000, Annual rate % = 6, Original years = 10, Extra monthly = 0 in the Extra Payment Mortgage Calculator gives: Base payment: 1,110.21; Payment with extra: 1,110.21; Interest without extra: 33,224.33; Interest with extra: 33,224.33; Interest saved: 0.00; Months gained: 0
哪些输入会被检查？Which inputs are validated?
「房贷提前还款计算器」会检查这些输入——「本金」、「年利率 %」、「原年限」、「每月额外」：必须填写，不能为负数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Extra Payment Mortgage Calculator checks its inputs — "Principal", "Annual rate %", "Original years", "Extra monthly": required, cannot be negative; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.
有哪些选项可以调整？What options can I adjust?
「房贷提前还款计算器」的设置：「本金」默认 350000；「年利率 %」默认 5.5；「原年限」默认 30；「每月额外」默认 200。每次生成结果都按当前设置处理。Settings in the Extra Payment Mortgage Calculator — "Principal" default 350000; "Annual rate %" default 5.5; "Original years" default 30; "Extra monthly" default 200. The result always uses the current settings.
计算结果可以作为最终依据吗？Can I rely on the result?
「房贷提前还款计算器」按标准公式计算，结果仅供参考；实际金额以银行、券商或税务机关的规则和四舍五入方式为准。The Extra Payment Mortgage Calculator uses standard formulas and is for estimation only; actual figures depend on your bank, broker or tax authority's rules and rounding.
「房贷提前还款计算器」免费吗？需要注册吗？Is the Extra Payment Mortgage Calculator free? Do I need an account?
「房贷提前还款计算器」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Extra Payment Mortgage Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.