Age calculator | Calculate Your Exact Age

Calculate your age in years, months, days, and minutes with our Age Calculator. Enter your date of birth to get your current age or age on a specific date. This tool offers quick and accurate results for personal or official needs.

What Is an Age Calculator?

An age calculator finds your exact age from your date of birth — in years, months, days and even hours. Enter your birth date and it counts the time elapsed up to today (or any chosen date), accounting for leap years and the differing number of days in each month.
In your browser Updated 06/2026

Leave empty to calculate the age as of today.
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What is Age Calculation?

Age calculation is the process of determining the exact time span between your birth date and the current date. It takes into account years, months, days, and even leap years for precise results.

How Does Age Calculation Work?

Our calculator uses precise algorithms to compute your age, considering:
- Calendar days between dates
- Leap years
- Month lengths
- Time zones and local date considerations

Common Applications

Legal Documentation

Verifying age for legal requirements

Healthcare

Determining age-specific health recommendations

Education

School enrollment and grade placement

Employment

Verifying work eligibility and retirement planning

Tips for Accurate Age Calculation

  • Always use your official birth date
  • Consider time zones for international calculations
  • Remember leap years affect the calculation
  • Verify against official documents when needed

Use this tool from your AI agent

Free JSON API and Model Context Protocol (MCP) server. No signup, no API key, CORS open. Designed for Claude, ChatGPT, Cursor, scripts and frontend apps.

curl -X POST https://mate.tools/api/v1/age-calc.php \
  -H "Content-Type: application/json" \
  -d '{"date_of_birth":"1990-04-15"}'
import urllib.request, json

req = urllib.request.Request(
    "https://mate.tools/api/v1/age-calc.php",
    data=json.dumps({"date_of_birth":"1990-04-15"}).encode(),
    headers={"Content-Type": "application/json"},
)
with urllib.request.urlopen(req) as r:
    print(json.load(r))
const r = await fetch("https://mate.tools/api/v1/age-calc.php", {
    method: "POST",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({"date_of_birth":"1990-04-15"}),
});
console.log(await r.json());

Add to claude_desktop_config.json (Claude Desktop), ~/.cursor/mcp.json (Cursor), or any other MCP-compatible client:

{
  "mcpServers": {
    "mate-tools": {
      "command": "npx",
      "args": ["-y", "@mate-tools/mcp-server"]
    }
  }
}
API documentation OpenAPI 3.1 npm 60 req/min · 600 req/hour · 1 MB body cap