{"$schema":"https://toolsly.tools/schemas/tool-manifest-v1.json","generated":"2026-10-20T13:00:48.424Z","discovery":{"catalog":"https://toptool.io/free-tools/tools.json","llmsTxt":"https://toptool.io/free-tools/llms.txt","sitemap":"https://toptool.io/free-tools/sitemap.xml"},"relatedTools":[{"slug":"date-difference","name":"Date Difference Calculator","url":"https://toptool.io/free-tools/date-difference"},{"slug":"percentage-calculator","name":"Percentage Calculator","url":"https://toptool.io/free-tools/percentage-calculator"},{"slug":"countdown-timer","name":"Countdown Timer (Time Until)","url":"https://toptool.io/free-tools/countdown-timer"},{"slug":"bmi-calculator","name":"BMI Calculator","url":"https://toptool.io/free-tools/bmi-calculator"},{"slug":"loan-mortgage-calculator","name":"Loan & Mortgage Calculator","url":"https://toptool.io/free-tools/loan-mortgage-calculator"},{"slug":"electricity-cost-calculator","name":"Electricity Cost Calculator","url":"https://toptool.io/free-tools/electricity-cost-calculator"},{"slug":"gpa-calculator","name":"GPA Calculator","url":"https://toptool.io/free-tools/gpa-calculator"},{"slug":"huawei-unlock-code-calculator","name":"Huawei Unlock Code Calculator","url":"https://toptool.io/free-tools/huawei-unlock-code-calculator"}],"kind":"utility","slug":"age-calculator","name":"Age Calculator","description":"Compute your age in years, months, and days from a date of birth — plus total days lived.","longDescription":"Pick a date of birth (and optionally a target date — defaults to today). Returns the age in years/months/days and breakdowns in total days, hours, minutes, and seconds. Runs locally in your browser.","category":"calc","categoryName":"Calculators","keywords":["age calculator","age calculator online","age calculator free","calculate age","how old am i","date of birth calculator","years months days calculator","age in days","age in years","age difference calculator","exact age calculator","online age calculator"],"badge":"Calculator","runsOn":"client","url":"https://toptool.io/free-tools/age-calculator","inputs":[{"type":"text","key":"dob","label":"Date of birth (YYYY-MM-DD)","defaultValue":"2000-01-01","placeholder":"2000-01-01","help":"ISO date format."},{"type":"text","key":"target","label":"Target date (YYYY-MM-DD, blank = today)","defaultValue":"","placeholder":"leave blank for today"}],"outputs":[{"key":"age","label":"Age"},{"key":"totalDays","label":"Total days"},{"key":"totalHours","label":"Total hours"},{"key":"totalMinutes","label":"Total minutes"},{"key":"totalSeconds","label":"Total seconds"},{"key":"nextBirthday","label":"Days until next birthday"}],"invocation":{"webUi":"https://toptool.io/free-tools/age-calculator","api":null,"notes":"Use the web UI to enter inputs and view the result; there is no public execution API."}}