Interest Details
SI Result
📊 Amount Breakdown
💡 SI Insight
Simple interest stays constant every year. Best used for short-term loans and informal lending.
Frequently Asked Questions
Simple Interest (SI) is the interest calculated only on the original principal amount, not on accumulated interest. Formula: SI = (P × R × T) / 100. The interest amount stays the same throughout the period.
Simple Interest formula: SI = (P × R × T) / 100, where P is principal, R is rate per year, and T is time in years. Example: ₹10,000 at 10% for 2 years = (10000 × 10 × 2)/100 = ₹2,000.
Simple interest is used in personal loans, car loans, short-term loans, treasury bills, bonds, and education loans. Most banks use compound interest for FDs and savings accounts.
Simple interest is calculated only on principal. Compound interest is calculated on principal + accumulated interest. Compound grows faster over time.
Convert months to years by dividing by 12. Example: 6 months = 0.5 years. Or use formula: SI = (P × R × Months) / (100 × 12). Our calculator does this automatically.
Yes! Convert days to years (Days/365). Example: 90 days at 10% on ₹10,000 = (10000 × 10 × 90)/(100 × 365) = ₹246.58. Our calculator supports years, months, and days directly.