💳 信用卡利息与还清时间Credit Card Interest Calculator
按年利率和每月固定还款，计算每月利息、还清所需月数和总利息。本地处理。可设置「欠款余额」、「年利率 %」、「每月还款」。Monthly interest, months to pay off and total interest at a fixed monthly payment. Processed locally. Settings: Balance, APR %, Monthly payment.
使用说明与常见问题How-to & FAQ
「信用卡利息与还清时间」是什么？What is the Credit Card Interest Calculator tool?
按年利率和每月固定还款，计算每月利息、还清所需月数和总利息。本地处理。可设置「欠款余额」、「年利率 %」、「每月还款」。Monthly interest, months to pay off and total interest at a fixed monthly payment. Processed locally. Settings: Balance, APR %, Monthly payment.
如何使用「信用卡利息与还清时间」？How do I use the Credit Card Interest Calculator tool?
填写欠款余额、年利率和每月还款额，即可得到每月利息、还清所需月数和总利息。结果会随输入实时更新。Enter the balance, APR and monthly payment to see the monthly interest, how many months it takes to pay off and the total interest. The result updates as you type.
最低还款？Minimum payment?
本页按固定金额；银行的最低还款比例会随余额下降，耗时更长。This uses a fixed amount; a bank minimum that shrinks with the balance takes longer.
能举个计算实例吗？Can you show a worked example?
例如在「信用卡利息与还清时间」中填 欠款余额 = 5000，年利率 % = 20，每月还款 = 250，结果区显示：首月利息：83.33；还清月数：25；总利息：1,133.05；总还款：6,133.05For example, entering Balance = 5000, APR % = 20, Monthly payment = 250 in the Credit Card Interest Calculator gives: First month interest: 83.33; Months to pay off: 25; Total interest: 1,133.05; Total paid: 6,133.05
哪些输入会被检查？Which inputs are validated?
「信用卡利息与还清时间」会检查这些输入——「欠款余额」、「每月还款」：必须填写，须大于 0；「年利率 %」：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 Credit Card Interest Calculator checks its inputs — "Balance", "Monthly payment": required, must be greater than 0; "APR %": 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?
「信用卡利息与还清时间」的设置：「欠款余额」默认 5000；「年利率 %」默认 20；「每月还款」默认 250。每次生成结果都按当前设置处理。Settings in the Credit Card Interest Calculator — "Balance" default 5000; "APR %" default 20; "Monthly payment" default 250. 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?
「信用卡利息与还清时间」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 Credit Card Interest Calculator uses standard formulas and is for estimation only; actual figures depend on your bank, broker or tax authority's rules and rounding.
「信用卡利息与还清时间」免费吗？需要注册吗？Is the Credit Card Interest Calculator free? Do I need an account?
「信用卡利息与还清时间」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 Credit Card Interest 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.