◷Free
Add or subtract calendar days
Shift a Gregorian date by an integer number of UTC calendar days.
The tool adds the signed day count to the starting date using UTC calendar-day arithmetic. For example, adding two days to 2024-02-28 returns 2024-03-01, including the leap day.
How to use
- Enter your text, values, or image.
- Adjust the options and run the tool.
- Copy or download your result.
Worked example
Example input
Starting date: 2024-02-28 Days to add (negative subtracts): 2
Example result
{
"date": "2024-03-01"
}Limitations and details
Offsets must be whole days within ±1,000,000 and the result must remain in years 0001–9999; local daylight-saving changes do not apply.
Inputs and options
- Starting date
- Date
- Days to add (negative subtracts)
- Number · Minimum: -1000000 · Maximum: 1000000
Frequently asked questions
Is this tool free and private?
Yes. All 300 tools are free in this phase. Processing happens in your browser; your input and files are not sent to our servers.