Investment Calculator

Intro

This project is a web-based set of finance calculators focused on compound interest and mortgage repayment. The compound calculator accepts principal, annual interest rate, term and compounding frequency, and can simulate periodic investments or target-amount goals. A separate mortgage (loan) repayment tool estimates monthly payments and produces an amortization-style breakdown.

Key Features

• Compound calculator inputs: principal, annual rate, term (years), compounding frequency, and optional periodic (monthly or yearly) contributions. Outputs include required annualized return (when relevant), total contributions, final amount, total returns and total return rate.
• Periodic investment and goal (target amount) modes for monthly or yearly contributions.
• Mortgage calculator: monthly repayment estimates, multiple repayment methods (equal principal and interest, equal principal, bullet repayment), and per-period breakdowns of principal, interest and remaining balance.
• Multilingual interface listing languages such as English, Spanish, French, German, Portuguese, Italian, Russian, Thai, Japanese, Korean, Simplified Chinese and Traditional Chinese.
• Utility options shown in snippets include the ability to share or copy calculation results.
• The compound calculator is described as free to use.

Who this is for

• Individuals who want a straightforward web tool to estimate compound growth or simulate regular monthly/yearly investments.
• Homebuyers or borrowers who need a simple mortgage repayment estimate and a per-period amortization breakdown to compare repayment methods.

Notes and limits: calculations are driven entirely by user inputs and example outputs default to zeros before inputs are entered. Snippets reviewed do not show operator details, privacy policy text, security information or explicit disclaimers about financial advice.