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เครื่องคิดเลขดอกเบี้ยทบต้น

Compound interest: compute final amount and interest from principal, rate and monthly investment with growth chart. Supports batch processing and one-click copy.

วิธีใช้งาน

กรอกเงินต้น อัตราดอกเบี้ยรายปีและระยะเวลา เลือกความถี่ดอกเบี้ยทบต้น (รายปี/รายไตรมาส/รายเดือน/รายวัน/ต่อเนื่อง) เพิ่มเงินลงทุนรายเดือนได้ ยอดคงเหลือ เงินลงทุนสะสม ผลลัพธ์และรายละเอียดรายปีแสดงแบบเรียลไทม์

Overview

Compound Interest Calculator is a finance tool that Compound interest: compute final amount and interest from principal, rate and monthly investment with growth chart. Supports batch processing and one-click copy. It runs 100% in your browser with no upload, so you get instant results with privacy. Whether you need a quick answer or batch processing with precise control, you can enter, validate and export in seconds. The UI is responsive on mobile, tablet and desktop and supports one-click copy.

Use cases

  • Estimate take-home and tax
  • Plan savings and SIP compounding
  • Compare mortgage amortization
  • Model cash flow and payback
  • Use it to cross-check “复利计算、compound interest” in reports, docs or APIs to avoid manual conversion errors

How to use

  1. 1 Enter principal/rate/term
  2. 2 Toggle repayment methods to compare interest
  3. 3 Review schedule and charts
  4. 4 Copy or export details

Highlights

  • Local & private: processing stays in your browser
  • Live validation with tolerant parsing
  • One-click copy and export for docs, code or sheets
  • Batch and offline support under poor network

Notes

  • Check prepayment penalties
  • Nominal vs effective rate may differ
  • Excludes fees/insurance

FAQ

Why a few dollars off from bank?
Day-count and rounding differences within 0.1%.
Equal payment vs equal principal?
Equal payment is steady; equal principal saves total interest but starts higher.
How is Compound Interest Calculator different?
It runs locally with a focus on speed and privacy, plus tolerant parsing for “复利计算、compound interest” and one-click copy for reuse.
Can I use results in official reports?
Use it as a working draft and cross-check with authoritative sources; keep the exported log and parameters for traceability.
Tip：Tip: Bookmark this page or pin the tab; find related tools via categories and search (convert → calculate → export).
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All calculations run locally in your browser; nothing is uploaded.