Simple Interest

Calculates simple interest and the total amount.

GET /calc/interest

Parameters

Parameter	Required	Default	Description
principal	Yes	—	Principal amount (e.g. 1000)
rate	Yes	—	Annual interest rate as a percentage (e.g. 5 for 5%)
time	Yes	—	Time period (number of years or months)
duration	No	year	Time unit: year or month

Example

Annual rate for 3 years:

curl "https://api.uwuapps.org/calc/interest?principal=1000&rate=5&time=3&duration=year"

Monthly rate for 12 months:

curl "https://api.uwuapps.org/calc/interest?principal=1000&rate=5&time=12&duration=month"

Response

{
  "success": true,
  "principal": 1000,
  "rate": 5,
  "time": 3,
  "duration": "year",
  "interest": 150,
  "amount": 1150
}

Response fields

Field	Description
principal	The principal amount
rate	The interest rate
time	The time period
duration	The time unit (year or month)
interest	The calculated interest
amount	Principal + interest (total amount)

Formula

• Yearly: Interest = (principal × rate × time) / 100

• Monthly: Interest = (principal × rate × time) / 1200