Финансы
Мгновенно, конфиденциально и бесплатно
Калькулятор простых процентов.
Рассчитайте простые проценты, будущую стоимость и рост инвестиций со временем
Введите значения
Результаты обновляются во время ввода.
Таблица роста по годам
| Год / период | Накопленные проценты | Итоговый баланс |
|---|---|---|
| Year 1 | $600.00 | $10,600.00 |
| Year 2 | $1,200.00 | $11,200.00 |
| Year 3 | $1,800.00 | $11,800.00 |
| Year 4 | $2,400.00 | $12,400.00 |
| Year 5 | $3,000.00 | $13,000.00 |
Cite this calculator
Canonical URL: https://mathify.one/ru/finance/simple-interest
Cite as: Mathify. (2026). Калькулятор простых процентов. https://mathify.one/ru/finance/simple-interest
Use Cases
Estimate investment growth
Use this calculator to see how much a fixed deposit, bond, or other simple-interest investment will grow over a specified period. Enter your principal, rate, and time to get the future value.
Example: Invest $5,000 at 4% annual interest for 3 years to see the future value.
Calculate loan interest
Determine the total interest you'll pay on a simple-interest loan, such as a personal or car loan, by entering the loan amount, interest rate, and loan term.
Example: Borrow $10,000 at 6% for 5 years to find the total interest cost.
Frequently Asked Questions
- How do I calculate simple interest?
- Enter the principal amount, annual interest rate, and time period in years. The calculator uses the formula: Interest = Principal × Rate × Time. It then shows the interest earned and the total future value (principal plus interest).
- What is the future value in simple interest?
- Future value is the total amount you will have after the interest is added to the principal. It is calculated as Principal + (Principal × Rate × Time). This calculator displays both the interest and the future value for your investment or loan.
- Can I use this calculator for any time period?
- Yes, you can enter time in years, but you can also use fractional years (e.g., 0.5 for 6 months) or convert months to years by dividing by 12. The calculator assumes the rate is annual, so ensure your time is in years for accurate results.
Tips & Common Mistakes
Tips
- Ensure the interest rate is in decimal form if you're doing manual calculations, but the calculator accepts percentages directly.
- For time periods less than a year, convert months to years (e.g., 6 months = 0.5 years) to get accurate results.
- Double-check that the principal is the initial amount before any interest is added.
- Use the future value to compare different investment options or loan terms.
Common Mistakes to Avoid
- Using the interest rate as a whole number instead of a percentage (e.g., entering 5 instead of 5%). The calculator expects the rate as a percentage, so enter 5 for 5%.
- Forgetting to convert time to years when using months or days, leading to incorrect interest calculations.
- Confusing simple interest with compound interest; this calculator only computes simple interest, not interest on interest.
Last updated: August 13, 2026