Date addition and subtraction online calculator

App description

The calculator can find the result by entering the start
date and the date and time of the increase or interval.
The start date allows you to choose from 3 formats.

Usage example

Start date: 2019/3/15

Select: (year/month/day format)

Add date and time: 3 days; 2 weeks; 1 month; 1 year.

Click "Calculate" to output the result.

Result: 2020/5/2.