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T
Tools.Town
Free Online Tools for Everyone

Age Calculator API

Calculate your exact age in years, months, and days from any birth date — plus next birthday countdown.

Category: Date & Time Endpoint: /v1/date/age Method: GET Auth: API Key

Fast & Accurate

Get precise results instantly.

Easy Integration

Simple REST API with JSON response.

Developer Friendly

Clear docs and SDK examples.

Free to Start

1,000 free requests/month.

Endpoint

All requests should be made to the following endpoint:

GET https://api.tools.town/v1/date/age

Authentication

This endpoint requires an API Key. Include your API key in the request header.

Authorization: Bearer YOUR_API_KEY
You can get your API key from your dashboard.

Request Parameters

Send a GET request with query parameters.

Parameter Type Required Description Example
birthDate string Use YYYY-MM-DD format. 1990-01-15
asOf string Use YYYY-MM-DD format. example

Example Request

curl -G "https://api.tools.town/v1/date/age" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  --data-urlencode "birthDate=1990-01-15"

Example Response 200 OK

application/json
{
  "success": true,
  "data": {
    "years": "0",
    "months": "0",
    "days": "0",
    "totalDays": "0",
    "totalMonths": "0",
    "totalWeeks": "0",
    "nextBirthdayDays": "0",
    "nextBirthdayDate": "string"
  }
}

Error Codes

Code Meaning
400 Bad Request — missing or invalid parameter
401 Unauthorized — API key missing or invalid
429 Rate limit exceeded — free tier: 1,000 requests/month
500 Internal Server Error — try again or contact support