What compounding frequencies are supported?

Daily, monthly, and annually. More frequent compounding produces slightly higher returns due to interest compounding on previously earned interest.

How is the inflation-adjusted return calculated?

The tool uses the Fisher equation: real return ≈ (1 + nominal rate) / (1 + inflation rate) − 1. Enter your expected inflation rate and toggle the adjustment on.

Can I include regular monthly contributions?

Yes. Enter a monthly contribution amount and it will be added each month throughout the investment period alongside the initial lump sum.

What does the chart show?

The SVG line chart plots the portfolio value year by year, with separate lines for total contributed and total value so you can see how gains compound over time.

Finance 無料サインアップ不要

Investment Calculator

Project investment growth with compound interest and charts

ツールを読み込み中…

このツールについて

Model the future value of an investment with compound interest. Enter your initial lump sum, monthly contribution, expected annual return, investment period, and compounding frequency (daily, monthly, or annually). Get the final value, total amount contributed, and total gains at a glance. A year-by-year growth table and an SVG line chart visualise the journey, and an optional inflation adjustment shows the real purchasing-power equivalent of your returns.

使い方

1 Enter your initial investment amount.
2 Set a monthly contribution (can be zero for a lump-sum calculation).
3 Enter your expected annual return percentage.
4 Choose the investment period in years and the compounding frequency.
5 Optionally enable the inflation adjustment and enter an annual inflation rate.
6 View the final value, gains summary, year-by-year table, and growth chart.

このツールについて

使い方

よくある質問