Estimate interest and total maturity when interest is calculated only on the original principal, without compounding.
Time Period
Total Interest Earned
Total Maturity Value
₹
Simple interest is calculated only on the starting principal: Interest = Principal × Annual rate × Time in years ÷ 100. Total maturity is the principal plus that interest.
Principal
The original amount on which interest is calculated.
Annual rate
The entered percentage is treated as a yearly simple-interest rate.
Time
Months are converted to 1/12 of a year and days to 1/365 of a year.
For a principal of ₹1,00,000 at 8% per year for 5 years, the calculator estimates:
Simple interest uses only the original principal. Compound interest also earns returns on previously accumulated interest.
Yes. Enter any combination of years, months, and days; the calculator converts them into a fraction of a year.
No. It is a formula-based gross estimate and does not deduct tax, fees, penalties, or other charges.
Compare simple interest with compounding or deposit-based projections.