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General Information, Facts & Tables
[Simple Interest Calculator]

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Simple interest is the amount that a principal value will increase by over a period of years. This does not take into account that the principal increases each year.

See Also: Open Another, Using the Calculators, Compound Interest Calculator

Note! Calculator Under Construction.



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SI = (P * R * T) / 100
P = (SI * 100) / (R * T)
R = (SI * 100) / (P * T)
T = (SI * 100) / (P * R)


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SI = simple interest (dollars)
P = principal sum (dollars)
R = rate of interest (yearly percentage rate)
T = time period (years)


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simple interest [$]:



principal [$]:


interest rate per annum [% pa]:


time period in years [a]


Note! Set unit values prior to calculating.


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Variables are in blue text
Numbers are in red text
Operators are in green text