Python program to calculate simple and compound interest; In this tutorial, you will learn how to calculate simple interest and compound interest in python.

## Python Program to Calculate Simple and Compound Interest

See the following to python program to calculate simple interest and compound interest; as shown below:

- Python Program to Calculate Simple Interest
- Python Program to Compute Compound Interest

### Python Program to Calculate Simple Interest

Use the following steps to write a program to calculate simple interest in python:

- Use a python input() function in your python program that takes an input from the user.
- Next, calculate the simple interest using this
**SI = (P * N * R)/100** - After the end program, print the simple interest.

```
#Python program to calculate simple interest
P = float(input("Enter the principal amount : "))
N = float(input("Enter the number of years : "))
R = float(input("Enter the rate of interest : "))
#calculate simple interest by using this formula
SI = (P * N * R)/100
#print
print("Simple interest : {}".format(SI))
```

**Output**

Enter the principal amount : 1000 Enter the number of years : 2 Enter the rate of interest : 5 Simple interest : 100.0

### Python Program to Compute Compound Interest

Use the following steps to write a program to calculate compound interest in python:

- Use a python input() function in your python program that takes an input (principal amount, rate of interest, time) from the user.
- Next, calculate the compound interest using this
**p * (pow((1 + r / 100), t))** - After the end program, print the compound interest.

```
#Python program to compute compound interest
p = float(input("Enter the principal amount : "))
t = float(input("Enter the number of years : "))
r = float(input("Enter the rate of interest : "))
#compute compound interest
ci = p * (pow((1 + r / 100), t))
#print
print("Compound interest : {}".format(ci))
```

**Output**

Enter the principal amount : 1000 Enter the number of years : 2 Enter the rate of interest : 5 Compound interest : 1102.5

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