Birthday Weekday Calculator

About Birthday Weekday Calculator

The Birthday Weekday Calculator is a free online tool that instantly reveals which day of the week you were born on by simply entering your birth date. It doesn’t just tell you the weekday—it also provides weekday-based personality traits, your Chinese Zodiac animal, and your Western zodiac sign, helping you discover more about yourself.

Have you ever wondered, “What day of the week was I born?” Enter your parents’, friends’, or partner’s birthdays and explore together. You might discover fascinating personality traits based on birth weekdays.

Key Features

• Instant Weekday Discovery – As soon as you select your birth date, the day of the week appears on screen. No complex calculations—just one click for immediate results.
• Weekday Personality Traits – Each weekday has been associated with specific planets since ancient times. Sunday with the Sun, Monday with the Moon, and so on. Each day carries unique energy, and we provide personality traits and keywords based on these associations.
• Chinese Zodiac Information – The Chinese Zodiac, important in East Asian cultures, is automatically calculated based on your birth year. Learn about your zodiac animal’s representative traits and characteristics.
• Western Zodiac Sign – Find out which of the 12 Western zodiac signs corresponds to your birthday and learn about its unique characteristics.
• Time Since Birth – See at a glance how many days, weeks, months, and years have passed since you were born. Ever wondered “How many days have I lived?” Find out instantly.
• Auto-Save Feature – Your birth date is automatically saved in your browser, so you don’t need to re-enter it on your next visit.

Origins and Meanings of Weekday Names

The weekday names we use every day carry fascinating history. Eastern cultures use a system based on yin-yang and five elements, while Western cultures derive names from Roman planetary gods. Remarkably, both East and West based their weekdays on the same celestial bodies.

☀️ Sunday – Day of the Sun

Derived from Latin “dies Solis” (day of the sun). Those born on Sunday are believed to possess bright and warm energy like the sun itself.

• Symbols: Light, vitality, self
• Personality Traits: Positive, creative, leadership, confident, generous
• Strengths: Energy that brightens surroundings, ability to see the big picture

🌙 Monday – Day of the Moon

Derived from Latin “dies Lunae” (day of the moon). The moon symbolizes emotions, intuition, and the subconscious. Those born on Monday are emotionally rich and understand others’ feelings well.

• Symbols: Emotion, intuition, nurturing
• Personality Traits: Emotional, intuitive, empathetic, imaginative, sensitive
• Strengths: Deep empathy, artistic sensitivity

🔥 Tuesday – Day of Mars

Derived from Latin “dies Martis” (day of Mars). The English name Tuesday comes from the Norse god of war “Tiw.” Mars symbolizes energy and action.

• Symbols: Courage, drive, passion
• Personality Traits: Passionate, challenging, proactive, competitive, decisive
• Strengths: Strong drive toward goals, courage to face difficulties

💫 Wednesday – Day of Mercury

Derived from Latin “dies Mercurii” (day of Mercury). Mercury is the planet governing communication, intellect, and change. Those born on Wednesday have strong intellectual curiosity.

• Symbols: Communication, intellect, agility
• Personality Traits: Intellectually curious, articulate, versatile, analytical, witty
• Strengths: Quick learning ability, excellent communication skills

⚡ Thursday – Day of Jupiter

Derived from Latin “dies Jovis” (day of Jupiter). The English name Thursday comes from the Norse thunder god “Thor.” Jupiter symbolizes luck, expansion, and wisdom.

• Symbols: Luck, growth, wisdom
• Personality Traits: Optimistic, generous, philosophical, adventurous, just
• Strengths: Positive mindset, ability to attract opportunities

💖 Friday – Day of Venus

Derived from Latin “dies Veneris” (day of Venus). The English name Friday comes from the Norse goddess of love “Frigg.” Venus symbolizes love, beauty, and harmony.

• Symbols: Love, beauty, harmony
• Personality Traits: Loving, aesthetic, sociable, charming, peaceful
• Strengths: Attractive charm, artistic talent

🪐 Saturday – Day of Saturn

Derived from Latin “dies Saturni” (day of Saturn). Saturn symbolizes time, responsibility, and discipline. Those born on Saturday are sincere and patient.

• Symbols: Responsibility, patience, achievement
• Personality Traits: Responsible, patient, practical, sincere, cautious
• Strengths: Power to achieve goals through steady effort, trustworthiness

What is the Chinese Zodiac?

The Chinese Zodiac is a tradition that has continued for thousands of years in East Asian cultures, with 12 animals cycling through 12-year periods. Each animal symbolizes unique personality traits and characteristics, and a person’s zodiac is determined by their birth year.

• 🐭 Rat – Smart, adaptable, and talented
• 🐂 Ox – Diligent, patient, and reliable
• 🐯 Tiger – Brave, confident, and independent
• 🐰 Rabbit – Gentle, elegant, and peace-loving
• 🐲 Dragon – Passionate, charismatic, and lucky
• 🐍 Snake – Wise, cautious, and intuitive
• 🐴 Horse – Active, energetic, and free
• 🐑 Goat – Gentle, artistic, and compassionate
• 🐵 Monkey – Clever, witty, and curious
• 🐔 Rooster – Diligent, confident, and precise
• 🐕 Dog – Loyal, honest, and kind
• 🐷 Pig – Sincere, generous, and optimistic

The 12 Zodiac Signs Guide

Zodiac signs are based on the 12 houses of the zodiac belt through which the sun passes. Your sign is determined by the period your birthday falls in, and each sign has its unique element (fire, earth, air, water) and qualities.

• ♈ Aries (Mar 21–Apr 19) – Fire sign, brave and passionate
• ♉ Taurus (Apr 20–May 20) – Earth sign, patient and practical
• ♊ Gemini (May 21–Jun 21) – Air sign, witty and versatile
• ♋ Cancer (Jun 22–Jul 22) – Water sign, emotional and protective
• ♌ Leo (Jul 23–Aug 22) – Fire sign, confident and generous
• ♍ Virgo (Aug 23–Sep 22) – Earth sign, analytical and meticulous
• ♎ Libra (Sep 23–Oct 22) – Air sign, harmonious and fair
• ♏ Scorpio (Oct 23–Nov 21) – Water sign, passionate and insightful
• ♐ Sagittarius (Nov 22–Dec 21) – Fire sign, optimistic and free
• ♑ Capricorn (Dec 22–Jan 19) – Earth sign, ambitious and responsible
• ♒ Aquarius (Jan 20–Feb 18) – Air sign, original and progressive
• ♓ Pisces (Feb 19–Mar 20) – Water sign, imaginative and empathetic

How to Use

1. Enter Birth Date – Click the date input field at the top and select your birth date.
2. View Results – Once you select a date, your birth weekday, personality traits, Chinese Zodiac, and zodiac sign information appear instantly.
3. Explore Details – Check each section for weekday personality traits, Chinese Zodiac characteristics, and zodiac sign descriptions.
4. Check Time Elapsed – At the bottom, see how many days, weeks, months, and years have passed since your birth.

Usage Tips

• Share with Family & Friends – Enter family members’ or friends’ birthdays and compare everyone’s weekday personalities.
• Anniversary Calculations – Find out what day of the week your wedding anniversary or other special dates fell on.
• Conversation Starter – Discuss birth weekdays and personality traits at gatherings for fun conversations.
• Self-Discovery – Combine weekday personality, Chinese Zodiac, and zodiac sign information to learn more about yourself.