Infinity Symbol ∞ Meaning: From Mathematics to Spiritual Symbolism

You’ve seen the infinity symbol many times. It looks like the number 8 lying on its side: ∞. It’s on jewelry, tattoos, logos and phone cases everywhere.

Most people know it means “forever” or “never-ending.” But there’s a lot more to it. This little loop started in math, moved into art and love, then picked up a deep spiritual meaning along the way.

And here’s a fun fact. The man who first used it in math never told anyone why he picked this shape. So even today, its exact start is a bit of a mystery.

In this guide you’ll learn where the ∞ symbol came from, what it means in math, why it stands for endless love and eternity and how one simple loop came to mean “forever.” It’s an easy and interesting story.

What the infinity symbol means

At its heart, the infinity symbol stands for something that has no end. Something that goes on forever, with no limit.

Think about counting numbers. You can always add one more. 100, then 101, then 102, on and on, so you never reach the end. There is no biggest number. That “no end” idea is exactly what the ∞ symbol captures.

The shape helps too. It’s one line that loops around and around, with no start and no finish. Your eye can follow it forever and never stop. That endless loop is why the symbol feels so right for the idea of “forever.”

So the core meaning is simple: no end, no limit, goes on and on. Everything else the symbol stands for grows out of that one idea.

Where the symbol came from

The infinity symbol was first used in math in the year 1655. An English mathematician named John Wallis put it in one of his books.

He needed a short, simple mark to mean “a number too big to count,” a number without any end. So he used this sideways-eight shape. From that point on, it became the standard sign for infinity in math.

But here’s the mystery. Wallis never explained why he chose this exact shape. He just used it and moved on. So for hundreds of years, people have guessed at his reason. There are a few popular ideas.

Theory 1: An old Roman number

One idea is that the shape came from an old Roman way of writing 1,000, which looked a bit like the symbol. Back then, 1,000 was a huge number, so people sometimes used it to mean “many” or “countless.” That fits the idea of infinity well.

Theory 2: The Greek letter omega

Another idea is that it came from omega (ω), the last letter of the Greek alphabet. Since omega is the last letter, it often stands for “the end” or “the final thing.” That’s a nice match for a symbol about the endless.

Theory 3: The ancient snake

A third idea points to a very old symbol called the ouroboros: a snake eating its own tail. This image is thousands of years old and shows up in many cultures. It stands for a never-ending cycle, which is close to the meaning of infinity.

Three theories for the shape

Since no one knows for sure, here are the three most popular ideas side by side.

Any of these could be right. The truth is, we may never know for sure, so that little mystery is part of the symbol’s charm.

Want to copy the infinity symbol or find other math and fun symbols? See the full symbol collection here →. Every symbol, from ∞ to hearts, stars and arrows, ready to copy and paste anywhere you type.

Its real name: the lemniscate

In math, the infinity symbol has a proper name. It’s called the “lemniscate.” The word comes from a Latin word that means “ribbon.”

That name fits well. The symbol does look like a ribbon tied in a loose bow, or a ribbon twisted once in the middle. Some people also call it a “lazy eight,” because it looks like the number 8 lying down to rest.

As Wikipedia’s page on the infinity symbol explains, a curve with this exact shape was later studied closely by another mathematician, Jacob Bernoulli, in 1694. So the shape went from a simple mark to a real object of study in math.

In math class, you’ll see the symbol used to mean “goes on forever.” For example, it can show that a list of numbers never ends, or that a line keeps going with no stop. It’s a handy shortcut for a very big idea.

How it became a symbol of love

Over time, the infinity symbol jumped out of math books and into everyday life. Today, one of its most popular meanings is endless love.

The idea is simple and sweet. If infinity means “forever with no end,” then it’s a perfect way to say “I will love you forever.” That’s why you see the ∞ symbol on so much couple’s jewelry, rings and matching tattoos.

People often add a name or a heart to the loop to make it personal. An infinity symbol with two names woven into it says “our love has no end.” It has become one of the most popular romantic symbols in the world.

In this way it joins other shapes that carry deep feeling. Just as the five-pointed star holds meaning across many cultures, the infinity loop has grown from a plain math mark into a symbol full of emotion and meaning.

Its spiritual and deeper meanings

The infinity symbol also carries a rich spiritual meaning for many people. This grows from the same “no end” idea, just applied to bigger questions about life.

• Eternity: the idea that the soul, or life itself, goes on forever
• Balance: the two equal loops can stand for balance between two things, like body and mind
• Endless cycles: the loop with no start or end reflects cycles like the seasons, or life and rebirth
• Unity: the single line that forms two loops can mean two things joined as one

In some spiritual views, the symbol stands for a love or a power that never runs out, like the endless love some believe a higher power has for the world. The same shape that means “a huge number” in math can mean “a boundless spirit” in faith.

This is the beauty of the symbol. It works on many levels at once, from a hard math idea to a soft feeling in the heart.

The infinity symbol today

These days the ∞ symbol is everywhere, used in many fun and useful ways.

• Logos: many brands use it to suggest endless choice or lasting quality
• Tattoos: to mark eternal love, a strong bond or endless growth
• Jewelry: rings and necklaces shaped like the loop, often for couples
• Photography and cameras: to mark focus set for far-away objects
• Design: as a clean, simple shape that looks good and means something

It has also become a symbol for some communities and causes, standing for endless support or unity. Few symbols are used in so many different places while keeping one clear meaning.

What the infinity symbol teaches us

The story of the infinity symbol shows how a mark can gather meaning over time. It started with one job in math and slowly grew into much more.

This is common with symbols. Some grow slowly over centuries, like the pound sign, which came from an old Latin letter, changing bit by bit until it became the sign we use now. The infinity symbol grew in meaning the same slow way.

It also shows how a small shape can carry a big idea. Just as the number of lines in an arrow can change its whole meaning, the simple loop of the infinity symbol holds one of the largest ideas there is: the idea of no end at all.

3 things people get wrong about the ∞ symbol

1. That it’s a very old math symbol

The idea of infinity is ancient, but the symbol in math is not that old. It was first used in 1655. The shape as a decoration is older, but its math job began then.

2. That it just means the number 8

It looks like a sideways 8, but it is not the number 8. It stands for something with no end at all. Its real math name is the lemniscate.

3. That it only means love

Endless love is one popular meaning, but it’s not the only one. The symbol also stands for math infinity, eternity, balance and endless cycles. Love is just its most famous modern use.

Wrapping up

The infinity symbol ∞ stands for something with no end, no limit, going on forever. It was first used in math in 1655 by John Wallis, who never said why he picked the shape. Its real math name is the lemniscate, which means “ribbon.”

Over time, the symbol grew far beyond math. Today it stands for endless love, eternity, balance and unending cycles. You see it on jewelry, tattoos and logos all over the world, always carrying that one clear idea: forever.

So the next time you see that little sideways eight, remember it holds one of the biggest ideas humans have ever had, wrapped up in one simple, endless loop.