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Calculate the exact age difference between two people or dates. Get precise time interval analysis in years, months, and days.
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Generate random browser User-Agent strings for developers, QA testers, and web scrapers to simulate various devices and platforms.
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Calculate the expiration date based on the production date and shelf life, or check the near-expiry and expired status based on the expiration date.
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Access a comprehensive list of User-Agent strings for major browsers and operating systems. Features one-click copying for web development, debugging, and scraper spoofing.
Bulk Random User Agent Generator
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Tired of making mistakes when calculating age differences manually? The Age Difference Calculator uses precise date algorithms to automatically compute the exact number of years, months, and days between any two dates. At its core, it is a date difference tool: simply input two valid dates, and it outputs a structured time gap, automatically handling complex calendar rules like leap years and varying month lengths.
Q: What date formats does the Age Difference Calculator support?
A: It supports mainstream formats like YYYY-MM-DD, YYYY/MM/DD, and YYYY.MM.DD. Just ensure the date is valid.
Q: How many days are there between 1990-02-28 and 1990-03-01?
A: The difference is 1 day. The tool automatically recognizes that 1990 is not a leap year and February only has 28 days, so the interval between February 28 and March 1 is exactly 1 day.
Please ensure your input dates are valid (e.g., avoid February 30). We recommend using the YYYY-MM-DD format for the most accurate parsing. The result is an absolute time difference, meaning the chronological order of the dates does not matter. All calculations are performed locally on your device, so there are no privacy concerns.
For historical research or age comparison scenarios, we recommend verifying the authenticity of your dates first. When calculating date differences across leap years, the tool automatically accounts for the existence of February 29. Typical input/output example: Entering "1992-03-10" and "1995-07-25" will output "3 years, 4 months, 15 days".
