Check your heart rate online
Measure your pulse right in the browser using your phone camera. Cover the rear camera with a fingertip and get your bpm in about 20 seconds.
- Free
- No sign-up
- Result in ~20 seconds
Not a medical device. For general wellness only — it does not diagnose, treat, or monitor any condition.
How to check your heart rate with your phone
You don't need a smartwatch or a chest strap to check your heart rate. If your phone has a camera, it can read your pulse in about 20 seconds. Rest your fingertip gently over the rear camera lens, hold still, and the tool counts each beat as blood moves through your finger. You'll get your heart rate in beats per minute (bpm), along with the range it falls into.
- Cover the rear camera
Place a fingertip flat over the camera lens. On phones with a flash, the light shines through your finger.
- Hold still for 20 seconds
Rest your hand on a table and don't press too hard. Movement is the most common cause of a bad reading.
- Read your bpm and zone
You'll see your beats per minute, a live pulse wave, and whether the result is in the typical resting range.
For the steadiest reading: sit down and relax for a minute first, cover the lens completely without pressing hard, keep your hand still, and measure in a warm room — cold fingers make the pulse harder to detect. If you'd rather count manually, you can also check your pulse at your wrist or neck and tap along with the beat.
How does checking your heart rate online work?
Every time your heart beats, it pushes a fresh wave of blood through your body. In your fingertip, that pulse of blood changes how much light passes through the skin. When you cover the camera, the tool measures those tiny light changes frame by frame and turns the rhythm into a heart rate. It's the same basic principle a clip-on pulse oximeter uses at the doctor's office — reading blood flow through light rather than sound or electrical signals.
Because it runs in your browser, there's nothing to install and no account to create. Your camera feed is processed on your device to find your pulse and is never uploaded.
What is a normal heart rate?
A normal resting heart rate for most adults is 60 to 100 bpm. "Resting" means you've been sitting calmly for a few minutes, not right after moving around. Fit and highly active people often sit lower — many trained athletes rest between 40 and 60 bpm, simply because a stronger heart moves more blood per beat.
Children run faster than adults, and the range narrows with age:
| Group | Typical resting range |
|---|---|
| Newborns | 100–160 bpm |
| Children (1–10) | 70–120 bpm |
| Adults | 60–100 bpm |
| Trained athletes | 40–60 bpm |
A single reading is just a snapshot. What tells you more is your pattern over time — your usual resting number, and how it shifts with sleep, stress, and fitness.
What affects your heart rate?
Plenty of everyday things nudge your pulse up or down: physical activity, caffeine, nicotine, stress or anxiety, a fever, dehydration, air temperature, some medications, and even standing up from sitting. That's why the same person can measure 62 bpm in the morning and 88 bpm after a coffee and a flight of stairs — both can be perfectly normal. If you want a meaningful resting number, measure at the same time each day, before caffeine, while calm.
How accurate is an online heart rate check?
For a calm, resting reading with a still hand and good light, a phone camera gets close to a dedicated monitor. Accuracy drops with movement, cold fingers, or poor lighting — and on iPhone the browser can't switch the camera flash on, so readings work best near a bright light. For the most reliable result, sit still, cover the lens completely, and measure next to a bright lamp or window; on Android you can also turn on your flashlight to light up your fingertip.
When to check with a professional
This tool is for general wellness and curiosity — it isn't a medical device and can't diagnose anything. See a healthcare professional if your resting heart rate is regularly below 60 or above 100 bpm without a clear reason, if your heartbeat feels irregular or skips, or if a high or low rate comes with chest pain, dizziness, shortness of breath, or fainting. If you feel unwell right now, don't rely on an app — contact a doctor or emergency services.
Frequently asked questions
Can a phone really measure your heart rate?
Yes — a phone camera can measure your heart rate surprisingly well. Each time your heart beats, blood flows through your fingertip and changes how much light passes through the skin. When you cover the rear camera, the tool reads those light changes many times per second and turns the rhythm into a heart rate in bpm. It's the same idea behind the clip-on pulse oximeter a nurse puts on your finger. It works best when you're still and the lens is fully covered; movement and cold hands are the main things that throw it off.
Is it free?
Yes, checking your heart rate online here is completely free. There's no sign-up, no download, and no limit on how many times you can measure. You just open the page, cover the camera, and read your pulse.
Why doesn't it work well on my iPhone?
On iPhone the reading is weaker because Safari doesn't let websites turn on the camera flash, and the flash is what lights up your fingertip for a clean signal. Android Chrome can switch the flash on automatically, so it usually works out of the box. On an iPhone, measure right next to a bright lamp or window and hold very still.
How long does it take to check my heart rate?
About 20 seconds. Cover the rear camera with your fingertip, hold still, and the tool needs roughly that long to lock onto your pulse and settle on a stable number. Relaxing for a minute beforehand and keeping your hand steady gives you the fastest, cleanest reading. If nothing appears, uncover and re-cover the lens and try again in better light.
Is my camera data safe?
Yes. Your camera feed is processed right on your device to find your pulse, and it's never uploaded, recorded, or stored anywhere. Nothing about your measurement leaves your phone. When you close the page, the camera turns off and no video is kept.
What's a good heart rate?
For most resting adults, a good heart rate is between 60 and 100 bpm. Fitter and more active people are often lower — many trained athletes sit between 40 and 60 bpm because a stronger heart moves more blood with each beat. A single reading is only a snapshot, so your usual resting number and how it changes over time tell you far more than one measurement. If your resting rate is regularly outside 60–100 bpm without a clear reason, it's worth checking with a healthcare professional.
Not a medical device. This heart rate checker is for general wellness and information only. It does not diagnose, monitor, or treat any medical condition. Always consult a qualified healthcare professional about your health.