Simple interest calculator

Simple interest calculator.

Select currency:      
Principal amount: $    
Annual interest rate:   % per year
Period:  
   
Interest amount: $    
Total amount: $    

How to calculate simple interest formula

Simple interest calculation formula.

So The simple interest amount is equal to the principal amount times the annual interest rate divided by the number of periods per year m, times the number of periods n:

simple interest amount =  principal amount × (rate /  m) ×  n

Example 1

Calculate the simple interest amount of principal amount of $4,000, annual interest rate of 6% and time of 18 months.

Solution:

principal amount = $4,000

rate = 6%

m = 12 months/year

n = 18 months

simple interest amount = $4,000 × (6% / 12months/year) × 18months

    = $4,000 × (0.06 / 12months/year) × 18months

   = $360

Example 2

Calculate the simple interest amount of principal amount of $8,000, annual interest rate of 6% and time of 18 months.

Solution:

principal amount = $8,000

rate = 6%

m = 12 months/year

n = 18 months

simple interest amount = $8,000 × (6% / 12months/year) × 18months

    = $8,000 × (0.06 / 12months/year) × 18months

   = $720

Example 3

Calculate the simple interest amount of principal amount of $9,000, annual interest rate of 5% and time of 18 months.

Solution:

principal amount = $9,000

rate = 5%

m = 12 months/year

n = 18 months

simple interest amount = $9,000 × (5% / 12months/year) × 18months

    = $9,000 × (0.05 / 12months/year) × 18months

   = $675

 

 

Simple interest calculation ►

 


See also

Features of Simple interest Calculator

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