Compound Interest Calculator

Calculate compound interest on savings or loans for free. Choose any compounding frequency and see total interest and final amount. Private, instant, no signup.

Investment Details

1,00,000
7.0 %
10 Years

Future Value

0

Total Interest Earned

0

Principal Amount

0

Year-wise Growth Breakdown

Year Starting Balance Interest Earned Ending Balance
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Savings Calculator

Compound Interest Calculator

Project your long-term savings growth by calculating compound interest returns over multiple years with custom deposits.

Local Savings Modeler
STEP 01

Enter Principal

Provide the initial deposit or starting investment amount.

STEP 02

Set Regular Addition

Optionally input monthly or annual recurring savings deposits.

STEP 03

Select Rate & Tenure

Provide the nominal annual interest rate percentage and duration period.

STEP 04

Set Compounding

Choose daily, monthly, quarterly, or annual interest compounding cycles.

Your Privacy Matters

All processing stays in your browser

No Server Uploads

Files never leave your device

Auto-Cleared

Data removed when you close

Capabilities

Compound Interest Features

Savings Projections

Flexible Compounding

Supports custom interest frequency settings from daily to annual compoundings.

Future Value Estimates

Projects the total final balance of savings alongside cumulative earnings.

Recurring Savings Models

Accounts for periodic additional investments over the duration term.

Annual Balances Table

Simulates and displays year-by-year principal, addition, and interest growth grids.

100% Client-Side Privacy

Your savings plans, investment principal, recurring addition sums, and growth calculations are processed entirely locally inside your browser memory sandbox. We guarantee offline execution with zero server uploads.

Support

Common Questions Answered

Quick help
Q1 What is compound interest?
Compound interest is the interest calculated on both the initial principal deposit and the accumulated interest from previous savings periods.
Q2 How does compounding frequency affect my savings returns?
The more frequently interest is compounded (e.g., daily instead of annually), the faster interest accumulates on your balance, yielding higher compound growth.
Q3 What is the Rule of 72?
The Rule of 72 is a quick shortcut formula to estimate how long an investment takes to double at a fixed annual rate of interest. Simply divide 72 by the annual interest percentage.
Q4 Can I simulate additional periodic deposits?
Yes, you can configure standard regular deposits (monthly or annual additions) made at the start or end of each compound period to simulate recurring savings routines.
Q5 Are my compound savings figures sent to any server?
Absolutely not. All compound interest calculations are executed entirely inside your local browser runtime sandbox. No inputs are stored or transmitted over network sockets.