This free box breathing timer helps you follow the simple, steadying rhythm of box breathing: breathe in, hold, breathe out, and hold again, each for an equal count. There’s no sign-up and no ads — just set your pace, press start, and follow the square. And because every body is different, you can adjust the speed to whatever feels natural for you.
Box Breathing · adjustable pace
Box breathing keeps all four steps equal: breathe in, hold, breathe out, hold — each for the same count. Follow the dot around the square, or close your eyes and let the chime mark each corner. The classic pace is 4 seconds per side; adjust it to suit you.
How to Use the Box Breathing Timer
Using the timer is simple, and you can keep your eyes open to follow the square or close them and follow the chime.
- Set your pace: Choose how many seconds each side of the square should last. The classic rhythm is 4 seconds per side, but you can raise or lower it to suit your lungs and experience.
- Choose your rounds: Pick how many full cycles you’d like to complete. Four to six rounds is a good place to start.
- Press start: After a short “get ready” moment, the dot begins to travel the square — up one side as you breathe in, across the top as you hold, down as you breathe out, and across the bottom as you hold again.
- Follow the rhythm: A soft chime marks each corner, so you can settle into the pace without watching the screen.
- Save it for later: Bookmark this page so your box breathing timer is always ready for your next session.
What Is Box Breathing
Box breathing, also known as square breathing, is a breathing technique built on four equal steps: inhale, hold, exhale, and hold — each for the same count. Because the four phases are equal in length, they trace the shape of a box, which is where the name comes from.
Its power lies in that evenness. The steady, predictable rhythm gives your attention something simple to rest on, and the equal pauses between breaths encourage a slower, calmer pattern than the quick, shallow breathing many of us fall into when we’re stressed.
The Benefits of Box Breathing
Slow, controlled breathing like this is widely used as a way to calm the body and steady the mind. By lengthening each breath and adding gentle pauses, box breathing is thought to support the body’s natural “rest and digest” response — the calming side of the nervous system that helps counter tension and stress.
Many people turn to box breathing to ease everyday stress, to settle a busy mind before sleep, or to find focus before a demanding task. Research into slow breathing techniques suggests they can help lower feelings of stress and support a calmer state, though individual experiences vary. What most people notice first is simple: a few rounds tend to leave you feeling a little slower, steadier, and more present.
Where Box Breathing Comes From
The roots of box breathing reach back to ancient breath practices such as pranayama, the yogic art of breath control. In more recent times, the technique became widely known in the West as a practical tool for staying calm under pressure.
It’s perhaps best known for its use by the U.S. Navy SEALs, who use box breathing to stay composed and focused in high-stress situations — a use popularized by former SEAL commander Mark Divine. Today the same simple method is used by first responders, athletes, and performers, precisely because it needs no equipment and can be done anywhere, in just a few quiet minutes.
Why We Made This Timer Free and Adjustable
Many box breathing timers lock you into a single fixed rhythm. But everyone’s lungs and comfort are different, and a pace that suits one person can feel rushed or slow to another. So we made ours fully adjustable — set the speed that feels right for you — and completely free, with no account and no sign-up required. It’s a small tool, built to get out of your way so you can simply breathe.
If you’d like a different rhythm, try our 4-7-8 breathing timer or our silent meditation timer. You can also explore all our timers together, or read more about mindfulness and its science.
A Gentle Note
Box breathing is gentle and suitable for most people. Still, if you have a heart or respiratory condition, feel light-headed, or are pregnant, ease off and check with a healthcare professional before making it a regular practice. Breathing should feel comfortable — never strained. Listen to your body, and let the pace serve you.