🧮 Simple Interest Calculator
Estimate simple interest and total amount from a principal, annual rate, and time horizon. Educational estimate only; not for compound interest, APR, or amortized loans, and not financial, investment, legal, or tax advice.
This tool estimates simple interest with the formula `I = P × r × t`, where `P` is principal, `r` is the annual rate, and `t` is time converted into years. Amounts stay in your input currency unit.
The result here is for `simple interest only`. It does not automatically include compounding, amortized loans, APR, fees, taxes, penalties, variable rates, or contract-specific terms.
Limitation: This page only reflects the math of simple interest. It is not a loan quote, savings-yield promise, return forecast, or any institution-specific product term.
If you need compound interest, amortized loans, APR, start/end dates, or a 360-day basis, use a more appropriate model.
Disclaimer: This tool is for educational estimation only. It is not financial, investment, legal, or tax advice, and it is not a loan quote, yield guarantee, product recommendation, or official disclosure. Actual interest, fees, payment rules, compounding methods, and contract terms depend on the institution and the official documents you use.
Privacy note: Calculations run locally by default. Your inputs are not uploaded.
Estimate simple interest, ending total, and the basic interest split from principal, annual rate, and time using `I = P × r × t`. Use it for class exercises, quick borrowing comparisons, or checking the formula. It does not include compounding, APR, fees, taxes, penalties, amortization schedules, or contract terms, and it is not financial, investment, legal, or tax advice.