Finance
Savings Goal Calculator
🔒 ブラウザで動作
Calculate how long it takes to reach your savings goal with compound interest. Free, no account required — runs entirely in your browser.
このツールの使い方
- Enter your savings goal, current balance, and monthly contribution.
- Set an expected annual interest rate for compounding.
- Read how long it takes to reach the goal and the interest earned along the way.
よくある質問
- How long it takes to reach a goal — how is that calculated?
- The tool compounds your starting balance and monthly contributions at the rate you set until the balance reaches your goal, then reports the number of months.
- How does compound interest help?
- Interest earns interest, so contributions made earlier grow more. A higher rate or earlier start materially shortens the time to your goal.
- What rate should I assume?
- Use a realistic expected return for the account — modest for a savings account, higher but uncertain for investments. The result is an estimate, not a guarantee.
- Do my goal and contribution figures stay private?
- Yes. The compounding projection runs in your browser from the goal, balance, contribution, and rate you enter; none of it is uploaded.