Question 1

What is BornClock?

Accepted Answer

BornClock is a suite of free birthday and longevity tools. Enter your date of birth and instantly see your exact age, your planetary ages, celebrity birthday matches, zodiac sign, birthstone, life path number, and a science-based life expectancy estimate.

Question 2

Is BornClock free to use?

Accepted Answer

The core tools — age calculator, planetary age, zodiac, birthstone, numerology, and celebrity birthday matching — are completely free. The Life Expectancy Calculator is a premium feature that unlocks with an account.

Question 3

Who built BornClock?

Accepted Answer

BornClock was built by an independent team in India, with a focus on data accuracy, privacy-first design, and clean user experience. See our About page for more.

Question 4

Does BornClock store my date of birth?

Accepted Answer

Only if you create an account and save your profile. Anonymous use stores nothing. Even when you do save a profile, your health inputs for the Life Expectancy Calculator are never stored — they are processed entirely in your browser.

Question 5

What makes BornClock different from other age calculators?

Accepted Answer

Most age calculators just show years, months, and days. BornClock goes further: it converts your age into planetary years using NASA orbital data, estimates your longevity using WHO/UN actuarial tables and 12 lifestyle factors, and connects you to celebrities born on the same day.

Question 6

How is my life expectancy calculated?

Accepted Answer

BornClock starts with an age-conditional baseline from the UN World Population Prospects 2024 (specific to your country, age, and sex), then applies adjustments for 12 lifestyle factors drawn from peer-reviewed sources including GBD 2019 and the Lancet. Genetic and community bonuses are then added.

Question 7

Is the life expectancy estimate medical advice?

Accepted Answer

No. The estimate is a statistical projection at a population level for motivation and reflection. It does not account for your complete medical history, specific genetic variants, or future medical advances. Always consult a doctor for personal health guidance.

Question 8

How accurate is the life expectancy calculator?

Accepted Answer

Population-level actuarial models like ours have an individual uncertainty of ±5–8 years. They are useful for understanding which lifestyle factors matter most, not for predicting a specific date. Our methodology page lists every source and formula.

Question 9

Which country baselines does BornClock use?

Accepted Answer

We use UN WPP 2024 period life tables for 54 countries, plus WHO regional averages for countries not individually covered. The GLOBAL_DEFAULT (WHO global average) is used if no match is found.

Question 10

What lifestyle factors does the calculator consider?

Accepted Answer

Twelve factors: smoking, alcohol, exercise, sleep quality, BMI, diet (fruit & vegetables), chronic stress, social connections, Type 2 diabetes, heart disease history, air quality/pollution exposure, and mental health. Each draws from a specific peer-reviewed epidemiological study.

Question 11

What is the "What-If Simulator"?

Accepted Answer

The What-If Simulator lets you adjust individual lifestyle sliders after your initial calculation and instantly see how the estimate changes. It helps you understand the relative impact of quitting smoking vs. starting exercise, for example.

Question 12

Can I export my life expectancy report?

Accepted Answer

Yes. Premium users can export a personalised PDF report including the waterfall chart, factor breakdown, and comparison benchmarks.

Question 13

How does the celebrity birthday match work?

Accepted Answer

BornClock matches your day and month (not year) against a curated database of 1,000+ notable individuals. Results are ranked by global recognition score — a composite of Wikipedia page views, cross-domain presence, and historical significance.

Question 14

Where does the celebrity data come from?

Accepted Answer

Birth dates are sourced from Wikipedia, IMDb, and official biographies, cross-referenced for accuracy. The database covers film, music, sport, science, politics, and literature.

Question 15

Why am I only seeing a few celebrities?

Accepted Answer

Not all birth dates are equally populated in the database. If you see fewer results, it means fewer well-documented celebrities share your exact birthday. We update the database regularly.

Question 16

Can I see historical figures, not just living celebrities?

Accepted Answer

Yes. The database includes historical figures — scientists, artists, philosophers, and political leaders — alongside contemporary celebrities.

Question 17

Which zodiac system does BornClock use?

Accepted Answer

BornClock uses the Western tropical zodiac — twelve equal 30° divisions of the ecliptic fixed to the vernal equinox. This is the most widely used system in Western astrology and popular culture.

Question 18

What if I was born on the cusp between two signs?

Accepted Answer

BornClock uses fixed calendar date boundaries, which is the standard approach since most people do not know their exact birth time. If you know your birth time and location, an astrological chart software using your precise Sun position will give a more specific answer.

Question 19

Which birthstone list does BornClock use?

Accepted Answer

The American Gem Society / Jewelers of America official modern birthstone list, updated 2002 and 2016. Traditional and Ayurvedic alternatives are shown as supplementary information.

Question 20

How is the Life Path Number calculated?

Accepted Answer

BornClock uses the Pythagorean method most public calculators use: reduce the day, month and year separately, add them, then reduce the total. Master numbers 11, 22 and 33 are preserved at each step. For example, 15 June 1990 → day 15 → 6, month 6, year 1990 → 19 → 10 → 1; 6 + 6 + 1 = 13 → 4.

Question 21

Are zodiac, birthstone, and numerology scientifically validated?

Accepted Answer

No. These features are provided for cultural enrichment, tradition, and entertainment. BornClock clearly labels them as such and does not endorse predictive claims based on these systems.

Question 22

What does "your age on Mars" mean?

Accepted Answer

It means the number of complete Martian orbits around the Sun since your birth. A Martian year is approximately 686.971 Earth days, so a 30-year-old Earth person is about 15.9 Mars years old.

Question 23

What orbital data does BornClock use?

Accepted Answer

Mean sidereal orbital periods from the NASA JPL Planetary Fact Sheet (Williams, D.R., NASA Goddard Space Flight Center, 2024) at nssdc.gsfc.nasa.gov/planetary/factsheet/.

Question 24

What is a "planetary birthday"?

Accepted Answer

A planetary birthday is the moment that planet completes another full orbit since your birth. BornClock calculates the next occurrence of each and converts it to an Earth calendar date.

Question 25

Why does Mercury give such a high age?

Accepted Answer

Mercury orbits the Sun every 87.969 Earth days — about 4.15 times faster than Earth. A 30-year-old has lived through roughly 124 Mercury years.

Question 26

Does BornClock include Earth in the planetary age calculator?

Accepted Answer

Earth is not listed separately because your Earth age is already shown on the main age calculator. The planetary age tool covers the six other planets: Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune.

Question 27

Do I need an account to use BornClock?

Accepted Answer

No. The age calculator, planetary age, zodiac, birthstone, numerology, and celebrity birthday match are all free and require no account. An account unlocks the Life Expectancy Calculator and PDF export.

Question 28

How do I create an account?

Accepted Answer

Click "Sign Up" in the navigation. You need only a name, email address, and password. No credit card is required to create a free account.

Question 29

How do I delete my account?

Accepted Answer

Go to your Profile page and choose "Delete Account". All your personal data is permanently deleted within 30 days. No need to contact support.

Question 30

How does BornClock handle payments?

Accepted Answer

Payments are processed via Razorpay. BornClock only receives a transaction confirmation — your card details never touch our servers.

Question 31

Can I export my data?

Accepted Answer

Yes. Email privacy@bornclock.com to request a copy of your data in a portable format. We fulfil requests within 30 days.

Question 32

Do calculations happen on my device or your servers?

Accepted Answer

All calculations — age, planetary age, zodiac, numerology, birthstone, and life expectancy — run entirely in your browser. No personal data is transmitted to our servers during calculation.

Question 33

Does BornClock work offline?

Accepted Answer

The core calculations work without an internet connection once the page has loaded. Celebrity birthday matching requires a connection to query our database.

Question 34

Which browsers are supported?

Accepted Answer

BornClock is tested on the latest versions of Chrome, Firefox, Safari, and Edge. Internet Explorer is not supported.

Question 35

Is BornClock mobile-friendly?

Accepted Answer

Yes. BornClock is fully responsive and works on all modern smartphones and tablets.

Question 36

I found an error in the data. How do I report it?

Accepted Answer

Email hello@bornclock.com with the page, the error you found, and the correct data (with a source link if possible). We review and update within 7 days.

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Frequently Asked Questions

About BornClock

Life Expectancy Calculator

Celebrity Birthday Matching

Zodiac, Birthstone & Numerology

Planetary Age Calculator

Account and Premium

Technical Questions

Detailed Answers

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