Age Calculator

Calculate exact age or the time between two dates in years, months, days and total days. Great for birthdays and milestones.

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Years
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Months
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Days
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Days lived
Hours lived (≈)
Heartbeats (≈72/min)
Korean age (세는)

Western vs Korean age: Western (international) age counts completed years since birth. Korean 세는 나이 is typically current year − birth year + 1 and everyone gains a year on January 1 — so it is often 1–2 years higher than Western age.

Pregnancy timeline? Due date calculator · days between dates: Date difference · leap years: Leap year checker.

Calculate exact age

Exact years/months/days, days lived, next-birthday countdown with weekday, Western vs Korean age, and a copyable life-stats report — shareable as an image.

FAQ

What can I use Age Calculator for?

Age Calculator is useful when you need to calculate exact age or the time between two dates in years, months, days and total days. Great for birthdays and milestones. It is meant for quick checks, everyday workflows and practical tasks where a fast browser-based result is enough.

How do I use Age Calculator correctly?

Fill in the fields on the page and adjust any options before reading or copying the result.

What input does Age Calculator need?

Use the fields shown in the tool and keep the input close to the real case you want to solve. If the page includes examples or presets, start with those to understand the expected format.

What result does Age Calculator give me?

The tool returns a time, date, duration, schedule or countdown result based on your chosen inputs. In most cases the output updates instantly and can be copied, downloaded or used as a reference for your next step.

How accurate is Age Calculator?

Time tools depend on the dates, time zones and calendar assumptions you enter. Check edge cases such as daylight saving time.

Is my data uploaded when I use Age Calculator?

The tool is designed to run in your browser, so ordinary inputs are processed locally unless a page explicitly states that it needs an online lookup.

What common mistakes should I avoid with Age Calculator?

Check units, spelling, separators, dates, decimal points and empty fields before trusting the result.

What related tasks can Age Calculator help with?

Age Calculator is intended for use cases related to "age calculator" and nearby needs such as "date difference". For best results, follow the labels, examples and options on the page.

What are the limits of Age Calculator?

It is optimized for common web use, not unlimited batch processing or every edge case.

When should I double-check the output from Age Calculator?

Double-check the output whenever it affects money, safety, published content, customer work or an irreversible decision.