Scroll Test

Click the box, then scroll it as fast as you can for ten seconds and read how far you went.

Tap to start Click or tap this box, then scroll inside it as fast as you can.
More options

Scroll inside the box as far as you can in ten seconds. The clock starts when the box first moves. Up and down both count, and the result is the total distance in pixels, with pixels per second and your top speed under it. Your personal best uses this round.

–This run

–Your best

–Last run

How far you scroll in 10 seconds, in pixels, with your top speed. Wheel, touchpad, finger or keys.

No runs yet. Your last ten will show up here.

Round of the day

One round is picked each day, the same for everyone. Finish it and a badge counts your days in a row.

Saved in this browser

Next step Check the wheel for skipped or reversed steps

How it works

This scroll test is a scroll speed test for a wheel, trackpad, finger or keyboard: a ten-second scroll race against your own best. You get the distance in pixels, your top speed and the wheel events per second.

Read the full guide

A run, step by step

1. Click the box and keep the pointer over it. On a phone, put a finger in it. 2. Scroll as fast as you can. The clock starts when the box first moves. 3. Read your result when the ten seconds are up.

A scroll wheel speed test in pixels and wheel events

Pixels follow your settings: the system decides how far one step of the wheel moves a page, and browsers may report it in pixels, lines or pages. Compare pixels on one device only. Wheel events per second works as a scroll counter: it counts the messages and ignores their size, so use it to compare the mouse scroll speed of two mice.

  • Keep the pointer over the box: if it drifts off, the page scrolls and the count stops rising.
  • Both directions count, so a back-and-forth stroke keeps a fingertip on the wheel the whole time.
  • A free-spinning wheel piles up distance after one flick, so it has a round and a best of its own.

Questions and answers

How fast can you scroll?

Run the ten seconds and read your scrolling speed: the distance in pixels, the average in pixels per second and the top speed over your best quarter of a second. The page ranks nobody, because pixels depend on each device's scroll setting.

What does a scroll speed test measure?

How far a box scrolls in a fixed time, in CSS pixels, counting both directions, and how many wheel events the browser received. It does not look for a wheel that skips, jumps back or fails to click: that is the scroll wheel test.

Does the scrolling test work with a trackpad or a phone?

Yes. A wheel, two fingers on a trackpad, a finger on a touchscreen and the keyboard all move the box, and each has a round with a best of its own. A touchscreen sends no wheel events, so that line is left out.

What are scrolls per second?

The wheel events per second line of the result: how many wheel messages reached the browser each second. On a notched wheel it follows your finger and ignores how far each step moves the page.

How do I run a horizontal scroll test?

Under More options, pick a Sideways round in the Round menu for a side scroll test. Hold Shift and turn the wheel, tilt it, turn a thumb wheel or swipe sideways. A count stuck at zero means sideways scrolling is not reaching the browser.

All 17 rounds

Length rounds 4

  • Ten-second standard Scroll inside the box as far as you can in ten seconds. The clock starts when the box first moves. Up and down both count, and the result is the total distance in pixels, with pixels per second and your top speed under it. Your personal best uses this round.
  • Five-second sprint Five seconds is all burst. Top speed, which is the best quarter of a second in the run, matters most here, so set your hand before you start and go from the first notch.
  • Thirty-second distance Thirty seconds rewards a rhythm you can hold. Every time the finger lifts and resets, the box stands still, so a smooth stroke can beat a frantic one.
  • Sixty-second marathon A full minute of scrolling, the longest round. Pixels per second is the line to read, because you can set it beside your ten-second pace and see how much you fade.
Show all 17 rounds (13 more)

Wheel and input rounds 5

  • Notched wheel, ten seconds For a wheel that turns in steps you can feel. A stepped wheel sends its movement as separate wheel events, so the wheel events per second line tracks how fast your finger is working, with the system's scroll-distance setting taken out. It keeps its own best.
  • Free-spin wheel, ten seconds For a wheel that can be unlocked to spin freely. One hard flick keeps it turning by itself, so this round measures the wheel as much as the hand. It keeps its own best, so a free-spin run never mixes with a notched one.
  • Trackpad two-finger, ten seconds Two fingers on a laptop trackpad. A trackpad sends wheel events too, many small ones for each swipe, and many systems let the box coast after the fingers lift. Distance that arrives after the clock stops is not counted.
  • Touch flick, ten seconds A finger on a phone or tablet. Touch scrolling is inertial: the box keeps moving after a flick and slows down by itself. Try short flicks that stack up against one long drag and see which goes further. A touchscreen sends no wheel events, so that line is left out of the result.
  • Keyboard keys, ten seconds No pointer at all: click into the box, then use Page Down, Space or the arrow keys. A scroll can come from the keyboard as well as from a wheel, and the page measures the distance the same way. It keeps its own best.

Sideways rounds 4

  • Sideways with Shift, ten seconds The box turns on its side. Hold Shift and turn an ordinary wheel: many browsers treat that as sideways scrolling. If the count stays at zero, yours does not, and that is an answer too. It keeps its own best.
  • Tilt or thumb wheel, ten seconds For a mouse whose wheel tilts left and right, or one with a second wheel under the thumb. Some mice scroll sideways in one of those two ways, and this round shows whether the browser hears it and how far it carries.
  • Trackpad sideways, ten seconds Two fingers swept left and right on a trackpad. Both directions count, so sweep back and forth without lifting. It keeps its own best.
  • Touch sideways, ten seconds Flick the box left and right with a finger. It shows how a phone handles a sideways swipe inside a page, which is what a carousel or a wide table asks of it.

Technique rounds 3

  • Single flick coast, five seconds One flick, then hands off. Whatever the wheel, the trackpad or the touchscreen does by itself in five seconds is the score. It shows how much of any other result is coasting and how much is you.
  • Two-finger roll, ten seconds Index and middle finger take turns on the wheel, so that one is pulling while the other resets. It removes the pause between strokes, and the wheel events per second line shows whether it really helps.
  • Up and down, ten seconds Change direction whenever you like. The page adds up movement in both directions, so a back-and-forth stroke that never leaves the wheel counts in full. Compare it with one-way scrolling on the standard round.

Practice rounds 1

  • Warm-up scroll, not saved Ten seconds with nothing stored. Use it to find out how the box answers your wheel or trackpad before a run that counts.

How this list was compiled: Rounds designed for this page. Each one changes a single thing about the standard test (how long the clock runs, what you scroll with, which way the box scrolls, or whether anything is stored), so that two results can be compared fairly. How wheel events and scroll events differ, and that trackpads send wheel events too, follows https://developer.mozilla.org/en-US/docs/Web/API/Element/wheel_event and https://developer.mozilla.org/en-US/docs/Web/API/WheelEvent/deltaMode. Stepped wheels, tilting wheels and second wheels follow https://en.wikipedia.org/wiki/Scroll_wheel, and inertial scrolling follows https://en.wikipedia.org/wiki/Scrolling. Shift with the wheel as a sideways shortcut is listed for Windows and Linux at https://support.google.com/chrome/answer/157179 (all checked 2026-09-19). No distance, speed or average on this page comes from another site. Licence: own work

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