Download
This test runs multiple passes and discards warm-up noise for a steadier final result.
Uses a warm-up plus measured runs; the final mbps is a trimmed average. Press Start Download.
Upload
This test runs twice in a row. The final number is the average of both runs. You need to finish both passes before the result is final.
Runs twice; the final mbps is the average. Press Start Upload.
Spectrum Tier Comparison
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Note: Browser-based speed tests can be limited by your device's Wi-Fi card or browser overhead. For the most accurate results, use a hardwired ethernet connection. Upload uses a smaller payload than download so hosted apps (for example Render) stay under common request-size limits.