Overview
Age Calculator works by analyzing the date of birth provided and calculating the age. It uses advanced algorithms to calculate the age based on the date of birth and returns the calculated age.
Endpoint
One host, one path per API. The block below shows this call in four languages; every one of them is the same HTTP request. Making requests covers the timeouts, retries and parameter rules that apply to all of them. The SDKs wrap the same call in a typed client.
curl "https://api.apiverve.com/v1/agecalculator?dob=1990-08-02&timezone=America%2FChicago" \
-H "x-api-key: your_api_key_here"const res = await fetch('https://api.apiverve.com/v1/agecalculator?dob=1990-08-02&timezone=America%2FChicago', {
headers: { 'x-api-key': 'your_api_key_here' },
});
if (!res.ok) throw new Error(`${res.status} ${await res.text()}`);
const { data } = await res.json();
console.log(data);import requests
res = requests.get(
"https://api.apiverve.com/v1/agecalculator?dob=1990-08-02&timezone=America%2FChicago",
headers={"x-api-key": "your_api_key_here"},
timeout=15,
)
res.raise_for_status()
print(res.json()["data"])package main
import (
"fmt"
"io"
"net/http"
)
func main() {
req, _ := http.NewRequest("GET", "https://api.apiverve.com/v1/agecalculator?dob=1990-08-02&timezone=America%2FChicago", nil)
req.Header.Set("x-api-key", "your_api_key_here")
res, err := http.DefaultClient.Do(req)
if err != nil {
panic(err)
}
defer res.Body.Close()
out, _ := io.ReadAll(res.Body)
fmt.Println(string(out))
}Replace your_api_key_here with the key from your dashboard. When the inputs arrive as a list rather than one at a time, batch requests run up to 200 of them through this same API in a single call.
Authentication
Send your key in the x-api-key header. That is the only auth step — there is no token exchange and no per-endpoint scope to configure. Authentication covers creating, rotating and revoking keys.
A 401 means the key is missing, invalid or expired. A 403 means the key is valid but not permitted here — blocked by a key restriction or an IP allow-list. Running out of credits is a 429.
Parameters
Sent in the query string. Premium parameters are accepted on every plan but only take effect on plans that include them.
| Parameter | Type | Description |
|---|---|---|
dobRequired | string | The date of birth to calculate the age from (format: YYYY-MM-DD) date |
timezoneOptional | string | IANA timezone used to interpret the date of birth and to determine "today" when computing the age default America/Chicago · timezone |
Response
Every API returns the same three top-level keys, so one response handler covers your whole integration: status, error and data. Only data changes shape. Response format covers the envelope, the other output formats and how premium fields are withheld.
{
"status": "ok",
"error": null,
"data": {
"dob": "1990-01-01",
"age_breakdown": {
"years": 35,
"months": 431,
"weeks": 1876,
"days": 13133,
"hours": 315208,
"minutes": 18912499,
"seconds": 1134749976
},
"age_words": {
"years": "thirty-five",
"ordinal": "thirty-fifth",
"full": "thirty-five years old",
"locale": "en-US"
},
"timezone": "America/Chicago",
"locale": "en-US",
"next_birthday": {
"months": 0,
"weeks": 2,
"days": 15,
"hours": 367,
"minutes": 22060,
"seconds": 1323623
},
"insights": {
"generation": "Millennial",
"zodiacSign": "Capricorn",
"chineseZodiac": "Horse",
"birthstone": "Garnet",
"dayOfWeekBorn": "Monday",
"isLeapYearBirth": false,
"milestones": {
"canVoteUS": true,
"canDrinkUS": true,
"canRentCarUS": true,
"seniorDiscount": false
}
}
}
}Response fields
Paths are relative to data. Premium fields are absent rather than zeroed on plans that do not include them, so check for presence instead of comparing to 0.
| Field | Type | Example | Description |
|---|---|---|---|
dob | string | "1990-01-01" | Date of birth as provided in request (format: YYYY-MM-DD) |
age_breakdown | object | {...} | Age expressed in years, months, weeks, days, hours, minutes, and seconds |
years | number | 35 | Person's age in complete years |
months | number | 431 | Total age in months |
weeks | number | 1876 | Total age in weeks |
days | number | 13133 | Total age in days |
hours | number | 315208 | Total age in hours |
minutes | number | 18912499 | Total age in minutes |
seconds | number | 1134749976 | Total age in seconds |
age_words | object | {...} | Age expressed in words (e.g., thirty-five years old) |
years | string | "thirty-five" | Age in written word form (e.g., thirty-five) |
ordinal | string | "thirty-fifth" | Age in ordinal word form (e.g., thirty-fifth) |
full | string | "thirty-five years old" | Age as complete phrase (e.g., thirty-five years old) |
locale | string | "en-US" | Locale used for word generation (e.g., en-US) |
timezone | string | "America/Chicago" | Timezone associated with the calculation (e.g., America/Chicago) |
locale | string | "en-US" | Locale code for the response (e.g., en-US) |
next_birthday | object | {...} | Countdown to next birthday in months, weeks, days, hours, minutes, seconds |
months | number | 0 | Months until next birthday |
weeks | number | 2 | Weeks until next birthday |
days | number | 15 | Days until next birthday |
hours | number | 367 | Hours until next birthday |
minutes | number | 22060 | Minutes until next birthday |
seconds | number | 1323623 | Seconds until next birthday |
insights | object | {...} | |
generationPremium | string | "Millennial" | Generational cohort (e.g., Millennial, Gen Z, Baby Boomer) |
zodiacSignPremium | string | "Capricorn" | Western zodiac sign based on birth date (e.g., Capricorn, Leo) |
chineseZodiacPremium | string | "Horse" | Chinese zodiac animal based on birth year (e.g., Dragon, Tiger) |
birthstonePremium | string | "Garnet" | Traditional birthstone for birth month (e.g., Diamond, Ruby) |
dayOfWeekBornPremium | string | "Monday" | Day of the week person was born (e.g., Monday, Friday) |
isLeapYearBirthPremium | boolean | false | Whether the person was born in a leap year |
milestonesPremium | object | {...} | Legal milestones achieved (canVoteUS, canDrinkUS, canRentCarUS, seniorDiscount) |
canVoteUSPremium | boolean | true | Whether person is eligible to vote in United States elections |
canDrinkUSPremium | boolean | true | Whether person is legal age to drink alcohol in United States |
canRentCarUSPremium | boolean | true | Whether person meets age requirement to rent cars in United States |
seniorDiscountPremium | boolean | false | Whether person is eligible for senior citizen discounts |
Errors
Read the HTTP status first, then error for the specific reason. The body names the parameter that has to change. Error handling covers the full status list and which of them are worth retrying.
| Status | Meaning | What to do |
|---|---|---|
400 | Input was rejected | Read error; it names the parameter. |
401 | Key missing or invalid | Check the header name and the key value. |
403 | Key valid, but not permitted | A key restriction or IP allow-list; see key scoping. |
429 | Rate limited, or out of credits | Read error to tell them apart; see rate limits. |
Other ways to use Age Calculator
Set up Age Calculator on APIVerve, or reach the same source a different way. Your APIVerve account and credits work on all of them — one key, one balance.
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