Date Add Calculator
Add or subtract days, months and years from a date.
Input Data
Start
Days
Months
Years
Results
0
新日期 = 2026-01-31。
At a glance:Date addition: start date ± days/months/years gives a new date. Complements date-difference, countdown and age.
Formula
new date = start ± days/months/years.
How to Use
- Enter the start date and the amounts to add/subtract.
- The tool returns the new date.
Case Studies
2026-01-01 +30 days → 2026-01-31
Add 30 days.
FAQ
Negative values?
Supported for going into the past.
How does it relate to date-difference?
They are inverses: adding the days back gives the original date.
Where is it used?
Due dates and scheduling.
What is the precision?
Calendar date.
Related Tools
References
Content review: Calculatorism Science Team. Results are for reference only; please refer to the relevant authorities for the official figures.