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Compound Interest Calculator
See how savings grow with compound interest from a starting amount, annual rate, number of years and compounding frequency.
%
Final balance1,647.01
Interest earned647.01
Calculated in your browser — nothing is uploaded.
仕組み
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Enter the numbers
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See the result update live
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よくある質問
What is compound interest?
Interest that is added to the balance so it earns interest too. More frequent compounding (monthly vs yearly) grows the balance faster. This calculator uses your starting amount only, with no regular contributions.
ファイルはサーバーにアップロードされますか？
いいえ。このツールはすべてブラウザ内で動作します。ブラウザのネットワークタブを開けば、ファイルを運ぶリクエストがないことを確認できます。