Celtic Zodiac Calculator
The Celtic zodiac is an ancient astrological system rooted in the Druidic tradition of the British Isles and Western Europe. Unlike the Western zodiac's 12 signs based on solar months, the Celtic tree calendar features 13 lunar months, each associated with a sacred tree from the Ogham alphabet — the earliest written script of the Celtic peoples. The 13 trees are: Birch, Rowan, Ash, Alder, Willow, Hawthorn, Oak, Holly, Hazel, Vine, Ivy, Reed and Elder. Each tree sign spans approximately 28 days and carries the spiritual and symbolic qualities that the Druids associated with that tree species — qualities observed across centuries of living alongside and venerating these trees as sacred gateways to the otherworld.
Druids held trees in the highest reverence, seeing them as living embodiments of wisdom, protection and cosmic connection. Your Celtic tree sign reveals the deeper, often hidden qualities of your nature — the particular gift or challenge that your soul carries into this life. Combined with the Western sun sign and other astrological tools, the Celtic zodiac adds a rich, nature-based dimension to self-understanding. Enter your birth date to discover your tree sign, its Ogham symbol, its core qualities and what the ancient Druidic tradition says about the path of those born under it.
Frequently Asked Questions about the Celtic Zodiac
What is the Celtic zodiac?
The Celtic zodiac is a Druidic astrological system based on 13 sacred trees from the Ogham alphabet, each associated with a lunar month of approximately 28 days. It originates from the ancient Celtic traditions of the British Isles and Western Europe and emphasises the spiritual qualities of nature.
How many signs are in the Celtic zodiac?
There are 13 signs in the Celtic zodiac, one for each lunar month of the year. The 13 tree signs are: Birch, Rowan, Ash, Alder, Willow, Hawthorn, Oak, Holly, Hazel, Vine, Ivy, Reed and Elder.
What is the Ogham alphabet?
Ogham is the earliest known written script used by Celtic peoples, dating back to the 4th–6th centuries AD. It consists of a series of strokes and notches carved on stone or wood. Each letter corresponds to a tree, plant or shrub, and the system forms the basis of the Celtic tree zodiac.
What is the Oak tree sign known for?
Oak (Duir, June 10 – July 7) is one of the most powerful signs in the Celtic zodiac. Those born under the Oak are natural protectors, known for strength, endurance, wisdom and a sense of duty. They are often pillars of their communities — stable, generous and deeply connected to tradition.
What is the Birch tree sign?
Birch (Beth, December 24 – January 20) is the first sign of the Celtic tree calendar. It represents new beginnings, drive and resilience. People born under Birch are ambitious, adaptable and deeply motivated — they pioneer new paths and inspire others with their energy and determination.
Is the Celtic zodiac related to the Western zodiac?
The Celtic and Western zodiacs are separate systems developed independently. The Western zodiac is based on the solar year and ecliptic constellations, while the Celtic system is based on the lunar year and sacred trees. However, many people use both systems together for a more complete picture.
What is the most rare Celtic zodiac sign?
The Vine (Muin, September 2 – September 29) and the Reed (Ngetal, October 28 – November 24) signs are sometimes considered among the rarer or more mysterious Celtic signs. However, all 13 signs cover roughly equal portions of the year, so none is dramatically rarer than another.
What does the Elder tree sign represent?
Elder (Ruis, November 25 – December 23) is the last sign of the Celtic tree calendar. Elder people are known for their depth, introspection, free spirit and willingness to push boundaries. They are the seekers and truth-tellers of the Celtic zodiac, often misunderstood but deeply insightful.
Can the Celtic zodiac be used for compatibility?
Yes. In Celtic astrological tradition, certain tree signs are considered especially harmonious together. For example, Oak and Ash are both strong, grounded signs that complement each other. Hazel and Alder share intellectual and creative compatibility. Many practitioners read the elemental associations of trees for compatibility guidance.
How accurate is the Celtic zodiac?
Like all astrological systems, the Celtic zodiac is a symbolic and interpretive tool rather than a scientifically validated system. Its value lies in providing a framework for self-reflection, drawing on centuries of accumulated symbolic wisdom about human nature. Whether it resonates with you personally is the most meaningful test.