Online Step Counter
A pedometer that reads your phone's real accelerometer, filters out gravity and counts strides by peak detection — no app, no account, nothing leaves the device.
Steps this session
0
Today: 0 steps · starts counting when you do
Press start, then put the phone in your pocket or hand.
Live acceleration magnitude
0.00 m/s²
Each bump above the adaptive threshold that clears the 260 ms refractory period counts as one step.
Elapsed
00:00:00
Cadence
0 spm
Distance
0.000 km
Calories
0.0 kcal
Raise it if steps are missed, lower it if a bump counts twice.
Stride ≈ 41.5% of height.
About this tool
This step counter uses the browser DeviceMotionEvent API. Raw acceleration is passed through a first-order high-pass filter to remove gravity, then a peak detector with an adaptive threshold (mean + variance) and a 260 ms refractory period counts strides. iPhone users must grant motion access first; on desktops without an accelerometer you can tap to count. Elapsed time, cadence, distance and calories are calculated locally and today's total is kept in localStorage.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Online Step Counter really free?
Yes. Online Step Counter is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Online Step Counter upload my data?
No. Online Step Counter runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Online Step Counter is ready to use on desktop or mobile.
Does Online Step Counter work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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