About Us / 关于我们
Mortgage Calculator is a free online tool designed to help homebuyers, homeowners, and real estate professionals calculate mortgage payments quickly and accurately.
房贷计算器是一款免费的在线工具，旨在帮助购房者、房主和房地产专业人士快速、准确地计算房贷还款额。
Our Mission / 我们的使命
We believe that understanding your mortgage payments shouldn't be complicated. Our mission is to provide a simple, accurate, and accessible mortgage calculation tool that helps people make informed financial decisions about their home purchases.
我们相信，理解房贷还款不应复杂。我们的使命是提供简单、准确、易用的房贷计算工具，帮助人们做出明智的购房财务决策。
What We Offer / 我们提供的服务
Our mortgage calculator supports two common repayment methods: equal payment (equal installments) and equal principal. We also provide a detailed amortization schedule, allowing you to see exactly how each payment is split between principal and interest over the life of your loan.
我们的房贷计算器支持两种常见还款方式：等额本息和等额本金。我们还提供详细的还款明细表，让您清楚地看到整个贷款期内每期还款中本金和利息的分配情况。
Why Choose Us / 为什么选择我们
- 100% free, no registration required / 完全免费，无需注册
- Support for 8 major currencies / 支持 8 种主要货币
- Bilingual interface (English & Chinese) / 中英双语界面
- Mobile-friendly design / 移动端友好
- No data collection - all calculations happen in your browser / 不收集数据 - 所有计算在浏览器本地完成
Our Tools / 我们的工具
Our mortgage calculator provides the following features to help you plan your home purchase:
我们的房贷计算器提供以下功能，帮助你规划购房方案：
- Equal Payment Calculation (等额本息计算): Calculate fixed monthly payments with detailed amortization schedules showing how each payment splits between principal and interest.
- Equal Principal Calculation (等额本金计算): Calculate decreasing monthly payments where the principal portion remains constant while interest decreases over time.
- Amortization Schedule (还款明细表): View a complete month-by-month breakdown of every payment throughout the entire loan term.
- Multi-Currency Support (多币种支持): Calculate mortgages in 8 major currencies including USD, CNY, EUR, GBP, JPY, HKD, AUD, and CAD.
- Total Interest Calculation (总利息计算): See the total interest paid over the life of your loan and compare different scenarios.
- Bilingual Interface (双语界面): Full English and Chinese support with seamless language switching.
Who We Serve / 服务对象
Our tool is designed for a wide range of users:
我们的工具面向广泛的用户群体：
- First-time Homebuyers / 首次购房者: Understand how much you can afford and compare different loan scenarios before making a decision. 首次购房前了解可承受的贷款额度，对比不同贷款方案。
- Homeowners / 房主: Evaluate refinancing opportunities and prepayment strategies to save on interest. 评估再融资机会和提前还款策略以节省利息。
- Real Estate Professionals / 房地产专业人士: Quickly calculate mortgage payments for clients during property viewings. 在带看房产时为客户快速计算房贷月供。
- Financial Advisors / 理财顾问: Provide clients with accurate mortgage calculations and amortization schedules. 为客户提供准确的房贷计算和还款计划。
Our Technology / 我们的技术
All calculations are performed entirely in your browser using JavaScript, ensuring that your financial data never leaves your device. This approach provides three key benefits: complete privacy protection, instant calculation results without server round-trips, and offline capability once the page is loaded.
所有计算均通过 JavaScript 在您的浏览器中完成，确保您的财务数据永远不会离开您的设备。这种方式带来三大优势：完全的隐私保护、无需服务器往返的即时计算结果，以及页面加载后的离线使用能力。
Data Privacy / 数据隐私
We take your privacy seriously. Our mortgage calculator does not require any registration, does not collect personal information, and does not store your calculation results. All data you enter is processed locally in your browser and is automatically cleared when you close the page. We only use Google Analytics to collect anonymous usage statistics (page views, general geographic location) to improve our service.
我们非常重视您的隐私。我们的房贷计算器无需注册，不收集个人信息，不存储您的计算结果。您输入的所有数据均在浏览器本地处理，关闭页面时自动清除。我们仅使用 Google Analytics 收集匿名使用统计（页面浏览量、大致地理位置）以改进服务。
Contact Us / 联系我们
If you have any questions or suggestions, please visit our Contact page.
如果您有任何问题或建议，请访问我们的联系页面。
Our Calculation Methodology / 我们的计算方法
Our mortgage calculator uses industry-standard financial formulas to ensure accuracy and reliability. For the equal payment method (等额本息), we apply the standard amortization formula where each monthly payment is calculated to ensure the loan is fully paid off by the end of the term. For the equal principal method (等额本金), we calculate a fixed principal portion for each month and add the interest on the remaining balance.
我们的房贷计算器使用业界标准的金融公式，确保计算的准确性和可靠性。对于等额本息方式，我们采用标准摊销公式，计算每月固定还款额以确保贷款在期末完全还清。对于等额本金方式，我们计算每月固定的本金部分，并加上剩余余额的利息。
All calculations are performed using double-precision floating-point arithmetic in JavaScript. We take care to minimize rounding errors and display results with appropriate precision. However, due to the nature of floating-point calculations, minor discrepancies may occur compared to bank calculations that use different rounding conventions.
所有计算均使用 JavaScript 中的双精度浮点运算。我们注意最小化舍入误差，并以适当的精度显示结果。但由于浮点计算的性质，与使用不同舍入惯例的银行计算相比，可能存在微小差异。
Our Story / 我们的故事
The idea for this mortgage calculator was born from a simple frustration: existing online calculators were often cluttered with ads, required registrations, or did not support both English and Chinese. We wanted to create a clean, fast, and privacy-respecting tool that anyone could use without barriers, whether they are buying their first home in Beijing or refinancing a property in New York.
这款房贷计算器的创意源于一个简单的困惑：现有的在线计算器通常广告泛滥、需要注册，或不支持中英双语。我们希望创建一个简洁、快速、尊重隐私的工具，无论是北京首次购房者还是纽约的再融资者，都能无障碍地使用。
Since launching, we have continuously refined the calculator based on user feedback. We have added more currencies, improved the amortization schedule display, optimized mobile responsiveness, and enhanced the overall user experience. Our commitment to simplicity and privacy remains at the core of everything we do.
自上线以来，我们根据用户反馈持续改进计算器。我们增加了更多货币、改进了还款明细表显示、优化了移动端响应性，并提升了整体用户体验。我们对简洁和隐私的承诺始终是我们一切工作的核心。
Educational Resources / 教育资源
Beyond the calculator itself, we are committed to providing educational content that helps users make informed financial decisions. Our formula explanation page provides a deep dive into the mathematics behind mortgage calculations, including the derivation of both equal payment and equal principal formulas. We believe that understanding the underlying principles empowers users to make better financial choices.
除了计算器本身，我们致力于提供帮助用户做出明智财务决策的教育内容。我们的公式详解页面深入讲解了房贷计算背后的数学原理，包括等额本息和等额本金公式的推导过程。我们相信，理解底层原理能帮助用户做出更好的财务选择。
We plan to expand our educational resources to include articles on topics such as understanding credit scores, comparing fixed-rate and adjustable-rate mortgages, evaluating refinancing opportunities, and navigating the home-buying process in different countries. These resources will be available in both English and Chinese.
我们计划扩展教育资源，涵盖了解信用评分、比较固定利率和浮动利率房贷、评估再融资机会以及了解不同国家购房流程等主题的文章。这些资源将以中英双语提供。
Future Plans / 未来计划
We are constantly working to improve our mortgage calculator and add new features. Here are some of the features we plan to add in the future:
我们不断努力改进房贷计算器并添加新功能。以下是我们计划在未来添加的功能：
- Prepayment calculator: Simulate lump-sum extra payments and see their impact on total interest and loan term / 提前还款计算器：模拟一次性额外还款，查看其对总利息和贷款期限的影响
- Refinance comparison tool: Compare your current mortgage with refinancing options to determine potential savings / 再融资对比工具：将当前房贷与再融资方案进行对比，确定潜在节省
- Property tax and insurance estimator: Add estimated property tax and insurance to get a more complete picture of monthly housing costs / 房产税和保险估算器：添加预估的房产税和保险，获得更完整的月度住房成本视图
- Mortgage comparison tool: Compare multiple loan scenarios side by side / 房贷对比工具：并排比较多个贷款方案
- Export and print functionality: Save or print your calculation results and amortization schedules / 导出和打印功能：保存或打印计算结果和还款明细表
- Additional currencies and regional loan products / 更多货币和地区性贷款产品
Commitment to Privacy / 隐私承诺
Unlike many online financial tools, our mortgage calculator does not require any form of registration, login, or personal information. We do not ask for your name, email address, phone number, or any other identifying information. All calculations are performed entirely within your browser, meaning your financial data never travels across the internet to our servers.
与许多在线金融工具不同，我们的房贷计算器不需要任何形式的注册、登录或个人信息。我们不要求您提供姓名、电子邮箱、电话号码或任何其他身份信息。所有计算完全在您的浏览器内完成，这意味着您的财务数据永远不会通过互联网传输到我们的服务器。
This local-first approach is fundamental to our design philosophy. We believe that financial tools should respect user privacy by default, not as an afterthought. For more details about how we handle data, please review our Privacy Policy.
这种本地优先的方式是我们设计理念的基础。我们认为金融工具应该默认尊重用户隐私，而不是事后的补充。有关我们如何处理数据的更多详情，请查看我们的隐私政策。