--- description: Run speed tests from the Cloudflare One client to measure network throughput, latency, and quality scores for end user devices. title: Speed test image: https://developers.cloudflare.com/og-docs.png --- [Skip to content](#main-content) > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/cloudflare-one/llms.txt > Use this file to discover all available pages before exploring further. # Speed test Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/cloudflare-one/insights/dex/diagnostics/speed-test/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/) Speed tests allow administrators to remotely measure network performance from end-user devices running the [Cloudflare One client](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/cloudflare-one/team-and-resources/devices/cloudflare-one-client/). Each test runs from the client to Cloudflare's network edge and reports metrics for internet speed, latency, and network quality. Speed tests help IT teams: * Objectively measure network performance with the Cloudflare One client turned on. * Identify performance bottlenecks affecting specific users, devices, or locations. * Respond to user reports of slow connectivity with concrete data. Feature compatibility Feature availability * All Cloudflare One plans Supported client modes * Traffic and DNS mode * Traffic only mode Supported operating systems: | System | Support | | -------- | ------- | | Windows | ✅ | | macOS | ✅ | | Linux | ✅ | | iOS | ❌ | | Android | ❌ | | ChromeOS | ❌ | To run a speed test from a device: 1. In [Zero Trust ↗](https://dash.cloudflare.com/one), go to **Insights** \> **Digital experience** \> **Diagnostics**. 2. Select **Run diagnostics**. 3. Search for a device by user email, device name, or device ID. 4. Select the device, then select **Device speed test**. The test runs in the background on the selected device. Results appear in the diagnostics view once the test completes. ## Speed test metrics Each speed test reports the following metrics: ### Internet speed | Metric | Description | | ------------------- | -------------------------------------------------------------------------------------------------- | | Download throughput | The rate at which data is received by the device from Cloudflare's network edge, measured in Mbps. | | Upload throughput | The rate at which data is sent from the device to Cloudflare's network edge, measured in Mbps. | ### Latency | Metric | Description | | ---------------- | ------------------------------------------------------------------------------------------------------------------------------------------- | | Download latency | The round-trip time measured during an active download, reflecting latency under load. | | Upload latency | The round-trip time measured during an active upload, reflecting latency under load. | | Unloaded latency | The baseline round-trip time measured when no significant data transfer is occurring. This reflects the inherent latency of the connection. | | Jitter | The variation in latency over time. High jitter can cause inconsistent performance in real-time applications. | ### Network quality score Network quality scores estimate the end-user experience for common application types based on the measured speed and latency values. | Score | Description | | --------------- | ------------------------------------------------------------------------------------------------------- | | Video streaming | Rates the connection quality for video streaming applications based on throughput and latency. | | Video streaming | Estimates the connection quality for video streaming applications based on throughput and latency. | | Web chat / RTC | Estimates the connection quality for real-time communication applications such as video calls and VoIP. | Was this helpful? YesNo ## On this page [![](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/_astro/logo.te5VL_aD.svg)Docs](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/) ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/cloudflare-one/insights/dex/diagnostics/speed-test/#page","headline":"Speed test · Cloudflare One docs","description":"Run speed tests from the Cloudflare One client to measure network throughput, latency, and quality scores for end user devices.","url":"https://developers.cloudflare.com/cloudflare-one/insights/dex/diagnostics/speed-test/","inLanguage":"en","image":"https://developers.cloudflare.com/og-docs.png","dateModified":"2026-08-24","publisher":{"@type":"Organization","name":"Cloudflare","description":"One platform for your apps, agents, and workforce. 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