All tests
Tests are grouped by what they measure: connection, privacy, DNS, network calculators and the devices around them. Each page states its method and its limits.
Speed and latency
- Internet Speed TestInternet speed test with full metrics: download, upload, idle and loaded latency and jitter, measured to the nearest test server.
- Download Speed TestDownload speed test limited to one metric: throughput in Mbit/s and idle latency, with lower data use than the full test.
- Upload Speed TestUpload speed test with latency during upload: sending throughput in Mbit/s, relevant for video calls, backups and live streams.
- Ping TestPing test by HTTP request: latency in milliseconds and jitter to the nearest test server, shown as a series of samples.
- Bufferbloat TestBufferbloat test: compare idle latency with latency under download and upload load to see how much the queue adds, in milliseconds.
- Internet Stability TestInternet stability test: up to five consecutive runs show the spread of speed and latency, not a single best value.
- Live Ping MonitorLive ping monitor: latency and jitter to the nearest test server sampled each second, with spikes and drops marked on a timeline.
- Wi‑Fi vs Ethernet TestWiFi vs Ethernet speed test: run the same measurement on wireless and on a cable, then compare both results in one table.
Calls and gaming
IP and network
- What Is My IPWhat is my IP address: public address, IP version and announcing network (ASN), as seen by the server answering this request.
- IPv6 TestIPv6 test: separate reachability checks over IPv4 and IPv6, and which protocol the browser selects when both are available.
- Is My Internet Working?Is my internet working: a short check of device connectivity, name resolution and external reachability, with the likely failing layer.
- Subnet CalculatorSubnet calculator for IPv4 and IPv6: network and broadcast address, host range, subnet mask and wildcard mask from a CIDR prefix.
- Wi‑Fi QR Code GeneratorWiFi QR code generator: network name, security type and password become a code that phones scan to join, plus a strong password option.
Privacy
- WebRTC Leak TestWebRTC leak test: list the IP addresses your browser exposes through WebRTC, for example while a VPN is active.
- VPN TestVPN test: compare the country of your IP address with browser time zone, language and WebRTC addresses to spot mismatches.
- What Are My HTTP HeadersWhat are my HTTP headers: the request headers your browser sends to sites, including user agent, languages and client hints.
DNS
Microphone, camera and sound
- Microphone TestMicrophone test with a live input level meter and a short recording to play back. Audio is processed in the browser and not uploaded.
- Webcam TestWebcam test: live preview with the actual resolution and frame rate your camera delivers. Video stays in the browser.
- Speaker TestSpeaker test: play test tones on the left and right channels to verify output and channel order of speakers or headphones.
- Headphone TestHeadphone test: check left and right channels, stereo balance, phase and frequency range with defined test tones for each ear.
- Tone GeneratorTone generator: sine, square, triangle and sawtooth waves at a set frequency, plus sweeps, for checking audio equipment.
- Voice RecorderVoice recorder in the browser: record from the microphone, play the result back and save it as a file. Nothing is uploaded.
- Decibel MeterDecibel meter: relative sound level from the microphone in real time. Uncalibrated, so values are not certified dB SPL readings.
- Online MirrorOnline mirror: the camera image flipped like a mirror, with zoom, brightness and full-screen view. Video stays on the device.
Keyboard, mouse and controllers
- Keyboard TestKeyboard test: each key press is logged with its key and code, including modifiers and repeats, to find keys that do not register.
- Mouse TestMouse test: check left, right and middle buttons, extra buttons and the scroll wheel, with each event shown as it arrives.
- CPS TestCPS test: count clicks per second over 1, 5, 10 or 30 seconds, with the click rate shown live. Best results stay on this device only.
- Double Click TestDouble click test: detect unintended double clicks from a single press and measure the interval between your own clicks.
- Spacebar CounterSpacebar counter: count spacebar presses over a fixed time and read the rate in presses per second, for keyboard checks and games.
- Gamepad TesterGamepad tester: live readout of buttons, triggers and sticks, with drift and dead zone measurement and a vibration check.
- Touch Screen TestTouch screen test: draw across the display to find areas that do not respond and count simultaneous touch points.
Screen
- Dead Pixel TestDead pixel test: full-screen solid colours reveal pixels that stay black or stuck on one colour. Run it at full brightness.
- Screen Refresh Rate TestRefresh rate test: the display refresh rate in Hz estimated from the browser's frame timing, updated while the page runs.
- White ScreenWhite screen in full-screen mode with adjustable colour and brightness, for checking panel uniformity, cleaning or use as a light.
- Monitor TestMonitor test with colour fields, gradients, black and white levels, uniformity, sharpness and viewing angle patterns.
- FPS TestFPS test: the browser's rendered frame rate with current, average, minimum and maximum values and a frame time graph.
- What Is My Screen ResolutionWhat is my screen resolution: screen size in pixels, browser window size, device pixel ratio, colour depth and orientation.
- What Is My BrowserWhat is my browser: name, version, operating system, user agent string, language, time zone and enabled features.
- Black ScreenBlack screen in full-screen mode: pure black for checking OLED pixels, backlight bleed in a dark room, or as a blank display.
- Stuck Pixel FixerStuck pixel fixer: a small area of rapidly changing colours to place over a stuck pixel and try to restore it. Flashing light.
Planning
- How Much Internet Speed Do I Need?How much internet speed do I need: thresholds for video calls, streaming and gaming, each with a source, compared with your measurement.
- Download Time CalculatorDownload time calculator: enter file size and connection speed in Mbit/s or MB/s to get the transfer time, with MB and MiB kept apart.
- Mbps to MB/s ConverterMbps to MB/s converter: convert between Mbit/s, MB/s, Gbit/s and related units, with decimal MB and binary MiB shown separately.
- PPI CalculatorPPI calculator: pixels per inch, dot pitch and screen size from resolution and diagonal, using the standard diagonal formula.
- Bandwidth CalculatorBandwidth calculator: add streams, calls, games and devices to estimate the download and upload speed a household needs.
- Data Usage CalculatorData usage calculator: estimate monthly GB from streaming, calls, gaming, browsing and downloads, to compare with a plan or data cap.
- Streaming Bitrate CalculatorStreaming bitrate calculator: video bitrate and upload speed needed for 720p, 1080p, 1440p or 4K at 30 or 60 frames per second.
- Video File Size CalculatorVideo file size calculator: storage for a recording from bitrate and length, or the bitrate that fits a target size.