Illustrative example. The dates and amounts below are provided for practice.
A keepsake needs a precise calendar age rather than just a completed-year number. Use the illustrative birth date April 15, 1990 and reference date September 20, 2027.
Follow the three fields together
Enter those dates in Date of Birth and Calculate Age As Of, then Calculate. The age is 37 years, 5 months, and 5 days. Thirty-seven anniversaries lead to April 15, 2027. Five whole months lead to September 15. Five more days reach September 20.
The Months figure is the remainder after completed years. It is not the total number of months lived. Copying only “5 months” would therefore misdescribe the result.
Choose the wording you need
For a caption, “37 years, 5 months, 5 days” preserves the calendar breakdown. For a day milestone, use Total Days Lived instead. Its elapsed-day convention begins at zero on the date of birth. Counting birth as inclusive Day 1 would add one to that total.
This is date-level age. It does not use a birth time or compare hours. If the reference date comes from a photograph, use the date you intend the caption to describe rather than the date the image was uploaded.