Friendship Compatibility Calculator
Analyze platonic friendship compatibility based on sun, moon, and Mercury placements between two people. Enter birth information for both friends and discover how well you connect as friends and what makes your friendship special.
Friend 1
Enter Friend 1's birth information
Select Friend 1's birth month
Select Friend 1's birth day
Enter Friend 1's full birth year
Select Friend 1's birth time (approximate is fine)
Enter the city where Friend 1 was born
Enter Friend 1's region, state, or province (optional but recommended)
Enter the country where Friend 1 was born
Friend 2
Enter Friend 2's birth information
Select Friend 2's birth month
Select Friend 2's birth day
Enter Friend 2's full birth year
Select Friend 2's birth time (approximate is fine)
Enter the city where Friend 2 was born
Enter Friend 2's region, state, or province (optional but recommended)
Enter the country where Friend 2 was born
What is Friendship Compatibility in Astrology?
Three Key Placements
Friendship compatibility in astrology looks at three main placements: your Sun sign (your core personality), Moon sign (your emotions and how you care for others), and Mercury sign (how you communicate and think). Together, these three signs reveal how well you connect with a friend on different levels!
Why Mercury Matters Most
Mercury is THE most important planet for friendships because it rules communication, thinking, and how you connect mentally. Friends need to talk, share ideas, and understand each other—that's all Mercury! If your Mercury signs get along, your friendship will flow naturally with great conversations.
Moon for Emotional Support
Your Moon sign shows how you handle emotions and what makes you feel safe. Good Moon compatibility means you can support each other emotionally, understand each other's feelings, and be there during tough times. You just "get" why your friend feels the way they do!
Sun for Shared Values
Your Sun sign represents your core personality, values, and what you enjoy doing. When Sun signs are compatible, you naturally like similar activities, share similar values, and just enjoy being around each other. It's that "we just click!" feeling that makes friendship easy and fun.
Element Compatibility
Each zodiac sign belongs to an element: Fire (Aries, Leo, Sagittarius), Earth (Taurus, Virgo, Capricorn), Air (Gemini, Libra, Aquarius), or Water (Cancer, Scorpio, Pisces). Signs in the same element understand each other naturally. Fire and Air blend well together, as do Earth and Water!
Different from Romantic Love
Friendship compatibility is different from romantic compatibility! For romance, you'd look more at Venus (love style) and Mars (passion). For friendship, we focus on Mercury (communication), Moon (emotional support), and Sun (shared interests). Friends need different things than romantic partners!
How to Use This Friendship Calculator
Step 1: Enter Birth Information for Both Friends
You'll need to provide birth information for both friends: birth date (month, day, year), birth time, and birth location (city, country). The calculator will automatically determine each friend's Sun, Moon, and Mercury signs from this information!
- Birth date: month, day, and year for each friend
- Birth time: approximate time is fine if you don't know the exact time
- Birth location: city and country (region/state optional but recommended for accuracy)
Step 2: Get Your Compatibility Results
Once you've entered all the birth information for both friends, click calculate and the calculator will determine each person's Sun, Moon, and Mercury signs automatically, then analyze your friendship compatibility!
Example: Friend 1 born on June 15, 1995 at 2:30 PM in New York. Friend 2 born on October 22, 1993 at 10:15 AM in Los Angeles. The calculator will find their signs and show your compatibility!
Step 3: Get Your Score
Click calculate and you'll get a percentage score from 0-100%! The higher the score, the more naturally compatible you are as friends. But remember—even lower scores can mean great friendships with a bit more effort and understanding!
Understanding Your Score
- • 85-100%: Soul Friends - Rare cosmic connection, like you've known each other forever!
- • 70-84%: Best Friend Material - Amazing compatibility, natural and supportive
- • 55-69%: Great Friends - Wonderful friendship with balanced differences
- • 40-54%: Good Friends - Solid friendship with some effort needed
- • Under 40%: Challenging - Requires work but can still be meaningful
Reading the Breakdown
Pay attention to the individual scores for Mercury, Moon, and Sun compatibility:
- High Mercury = Easy conversations and understanding
- High Moon = Strong emotional support and empathy
- High Sun = Shared interests and similar values
You might be super strong in one area but weaker in another—that's totally normal!
Pro Tips
- Don't give up on a friendship just because of a low score!
- Use the insights to understand and improve your friendship
- Focus on your strengths and work on your challenges together
- Try it with multiple friends to see your different dynamics!
Why Mercury is Crucial for Friendships
Mercury in Fire Signs
Signs: Aries, Leo, Sagittarius Mercury
Communication style: Direct, enthusiastic, passionate, and quick to speak. They love exciting conversations and can get fired up about topics they care about!
As a friend: They're super fun to talk to, always have wild stories, and will hype you up! But they might interrupt or move on quickly if a conversation gets boring.
Mercury in Earth Signs
Signs: Taurus, Virgo, Capricorn Mercury
Communication style: Practical, reliable, methodical, and down-to-earth. They think before they speak and prefer conversations that have a point or purpose.
As a friend: They give amazing practical advice and really listen when you talk. But they might seem boring if you want dramatic, emotional conversations.
Mercury in Air Signs
Signs: Gemini, Libra, Aquarius Mercury
Communication style: Social, intellectual, curious, and objective. They can talk about ANYTHING for hours and love exchanging ideas and debating (in a friendly way).
As a friend: Never a dull conversation! They're witty, interesting, and make you think. But they can seem detached when you need emotional support rather than logic.
Mercury in Water Signs
Signs: Cancer, Scorpio, Pisces Mercury
Communication style: Intuitive, emotional, empathetic, and sometimes indirect. They pick up on feelings and unspoken things, and prefer deep conversations over small talk.
As a friend: They really understand your feelings and create emotional safety. But they might take things too personally or get moody in conversations.
💬 Mercury Compatibility Quick Guide:
- • Same element Mercury signs: You totally get how each other thinks—communication is effortless!
- • Fire + Air Mercury: Great combo! Fire brings passion, Air brings ideas. Conversations are exciting!
- • Earth + Water Mercury: Beautiful blend! Earth brings stability, Water brings depth. Understanding flows naturally!
- • Different element groups: You think differently, which can be frustrating BUT also makes conversations more interesting if you're patient!
Moon Signs & Emotional Compatibility
Your Moon sign reveals how you process emotions, what makes you feel safe, and how you support others emotionally. Good Moon compatibility in friendship means you can be there for each other during tough times!
Fire Moons (Aries, Leo, Sag)
Emotional style: Passionate, direct, and optimistic about feelings. They bounce back from sadness quickly and prefer to take action rather than dwell on emotions.
As a friend: They'll pump you up when you're down and encourage you to be brave! But might not understand if you need to cry for a while or process emotions slowly.
Earth Moons (Taurus, Virgo, Cap)
Emotional style: Stable, practical, and reserved with feelings. They show love through actions (like making you food or helping you) rather than dramatic emotional displays.
As a friend: Super reliable and grounding when you're emotional. They'll help you problem-solve. But might seem cold if you want someone to cry with you.
Air Moons (Gemini, Libra, Aquarius)
Emotional style: Intellectual about emotions, prefer to talk things out, and can be a bit detached. They process feelings by analyzing and discussing them.
As a friend: Great at helping you see different perspectives on your problems and making you laugh when you're sad. But might not validate your emotions enough.
Water Moons (Cancer, Scorpio, Pisces)
Emotional style: Deeply emotional, intuitive, and empathetic. They FEEL everything intensely and can sense when you're upset even if you don't say anything.
As a friend: The best for emotional support—they'll cry with you and truly understand your feelings. But they might get overwhelmed by heavy emotions or be too sensitive.
❤️ Moon Compatibility in Friendships:
- • Same element Moons: You handle emotions similarly—instant emotional understanding!
- • Compatible element Moons: You support each other well—your emotional styles complement each other!
- • Different element Moons: You'll need to learn each other's emotional language, but it helps you grow!
- • Friendship tip: Ask your friend how THEY want to be supported when upset—don't assume your way is their way!
How to Strengthen Any Friendship
No matter what your compatibility score is, ANY friendship can be amazing with effort, communication, and genuine care! Here's how to make your friendship even stronger based on astrology insights.
For High Compatibility (70%+)
- Don't take the friendship for granted—still make effort!
- Schedule regular hangouts even when life gets busy
- Support each other's growth and new interests
- Celebrate your amazing connection and show gratitude
- Be there during tough times—that's when friendships deepen
For Medium Compatibility (40-69%)
- Focus on what you DO have in common and enjoy together
- Be patient with differences in communication and emotions
- Clarify misunderstandings quickly before they grow
- Appreciate how your differences make you both better
- Find shared activities that you both genuinely enjoy
For Communication Challenges
- Ask "what do you mean?" instead of assuming you understand
- Text/call in the way THEY prefer, not just your way
- Be direct if they're indirect, or gentle if they're sensitive
- Listen more than you talk—really try to understand them
- Appreciate different perspectives instead of seeing them as wrong
For Emotional Differences
- Ask how they want to be supported when they're upset
- Don't judge their emotional reactions as "too much" or "too little"
- Respect if they process emotions differently than you do
- Show you care in ways THEY understand, not just your way
- Create emotional safety by being trustworthy and non-judgmental
✨ Universal Friendship Wisdom:
Astrology can explain your natural compatibility, but it doesn't determine your friendship's success! The best friendships are built on:
- Actually showing up and being present for each other
- Honest communication even when it's uncomfortable
- Accepting each other as you are, not trying to change them
- Supporting each other's dreams and celebrating successes
- Making time for fun together and creating good memories
- Being trustworthy, loyal, and keeping each other's secrets
Some of the best friendships are between "incompatible" signs because they put in the effort! And some "compatible" friendships fail because they took it for granted. It's all about how much you care!
Different Types of Friendships by Elements
🔥 Fire Sign Friendships (Aries, Leo, Sagittarius)
Friendship style: Fun, adventurous, spontaneous, and full of energy! Fire sign friends are the ones who'll drag you out of the house for wild adventures and make you feel alive.
What they bring: Enthusiasm, confidence, motivation, fun experiences, and unwavering support when you need to be brave or try something new.
What they need: Excitement, appreciation, freedom to be themselves, friends who can keep up with their energy, and patience when they're being dramatic or impulsive.
🌍 Earth Sign Friendships (Taurus, Virgo, Capricorn)
Friendship style: Loyal, dependable, practical, and steady. Earth sign friends are the ones who'll help you move, give great advice, and always be there when you need them.
What they bring: Reliability, practical help, grounding energy, honest feedback, and the kind of stability that makes you feel safe and supported.
What they need: Loyalty in return, appreciation for their practical ways of showing love, patience with their slower pace, and friends who respect their need for routines.
💨 Air Sign Friendships (Gemini, Libra, Aquarius)
Friendship style: Social, intellectual, communicative, and fun to talk to. Air sign friends are the ones who can discuss anything for hours and introduce you to interesting people and ideas.
What they bring: Great conversations, new perspectives, social connections, objectivity when you need it, and the ability to make you laugh and think at the same time.
What they need: Mental stimulation, freedom, variety in activities, friends who can handle their need for space, and understanding when they seem emotionally detached.
💧 Water Sign Friendships (Cancer, Scorpio, Pisces)
Friendship style: Deep, emotional, intuitive, and incredibly supportive. Water sign friends are the ones who truly understand your feelings and create that safe space to be vulnerable.
What they bring: Emotional depth, empathy, intuitive understanding, loyalty, and the kind of emotional support that makes you feel truly seen and heard.
What they need: Emotional reciprocity, trust, gentleness with their feelings, friends who won't judge their sensitivity, and understanding when they need alone time to recharge.
🌟 Building Cross-Element Friendships:
Different elements can create AMAZING friendships when you appreciate what each brings:
- Fire + Air: Adventure meets ideas! Fire inspires Air, Air fuels Fire. Super fun and exciting!
- Earth + Water: Stability meets emotion! Earth grounds Water, Water softens Earth. Deep and supportive!
- Fire + Earth: Energy meets stability! Can clash but also balance each other perfectly.
- Air + Water: Logic meets feelings! Challenging but helps both grow emotionally and intellectually.