Your nakshatra (birth star) is the Moon's lunar mansion at birth — arguably more defining in Vedic astrology than your Moon sign. A good calculator gives you the nakshatra, its pada, ruling planet and deity.
Short answer
For a free nakshatra calculator that also explains what your birth star means, use Stellr's nakshatra tools. Most apps give you the name; Stellr tells you what it implies for your nature and pattern.
What a good nakshatra calculator shows
Beyond the name, it should give you the pada (quarter), the ruling planet (which feeds your Vimshottari Dasha), the deity and symbol. These shape interpretation.
Stellr's nakshatra calculator and finder surface all of this from your birth data.
Why nakshatra matters
Vedic astrology weights the Moon and its nakshatra heavily for mind, emotion and life rhythm. Your dasha sequence even starts from your Moon nakshatra's ruler.
Stellr can then answer what your nakshatra means for you specifically, in plain English.
Frequently asked questions
How do I find my nakshatra?
Enter your birth date, time and place into a nakshatra calculator. Stellr computes your Janma Nakshatra (Moon's nakshatra), its pada and ruling planet, and explains what it means.
Is nakshatra more important than sign?
In Vedic astrology the Moon's nakshatra is often treated as more defining than the broad Moon sign, because it is more specific and drives your dasha timeline.