Age Calculator

A free online conversion calculator that calculate exact age in years, months, weeks, and days. find your age on any future date or count down to your next birthday. Get accurate results instantly without any software installation. Calculating exact age — down to years, months, and days — is necessary for eligibility verification, insurance underwriting, visa applications, retirement planning, and birthday countdowns. Calendar quirks like leap years and varying month lengths make manual computation unreliable, particularly when the span crosses multiple decades. Enter a birth date and optionally a target date to see the exact age broken down into years, months, weeks, days, hours, and even seconds. A next-birthday countdown shows days remaining until the next milestone. Enter a birth date and optionally a target date to receive a precise breakdown in years, months, weeks, and days. The calculator also shows total days lived and the next birthday countdown, with leap-year logic handled automatically. Age computation runs entirely through JavaScript's native Date object in your browser. Personal birth dates and identity-related information never leave your device, which is essential for privacy-sensitive eligibility and documentation tasks.