# SpeedAccu > Free internet speed test. Measure download speed, upload speed, ping and jitter in about 10 seconds. No signup, no app, no account. ## Key facts - Download: 6 parallel connections, 10-second window. The first 2 seconds are skipped as TCP warm-up, then bytes are counted. - Upload: 4 parallel connections, 10-second window, same 2-second warm-up rule. - Ping: median of 9 probes (first probe discarded as warm-up). Jitter is the mean absolute difference between successive probes. - Results measure the connection to the single SpeedAccu test server. One server is used and this is stated openly on the site. - Test history is stored in the visitor's browser only (localStorage, max 50 entries). Nothing is stored server-side. - 383 free provider-specific speed tests (for example Jio, Xfinity, BT, Verizon), each with its own title, description and FAQ. ## How the test differs from Ookla and fast.com - Ookla uses thousands of servers, picks the nearest, opens many parallel streams, and reports peak capacity. - fast.com measures against Netflix's own CDN servers. - SpeedAccu uses one server and 6 parallel connections for 10 seconds and reports what a real-world download looks like. - Different methods answer different questions. The numbers are honest about what each test measures. ## Pages - [Internet Speed Test](https://speedaccu.com/): run the free speed test. Download (6 parallel connections, 10s), upload (4 connections, 10s), ping and jitter (median of 9 probes). - [How the test works](https://speedaccu.com/methodology/): full methodology, what each metric means, and why results differ from Ookla or fast.com. Public page; not indexed by search engines. - [All provider speed tests](https://speedaccu.com/providers/): 383 free speed tests by internet provider and country. - Provider pages follow the pattern https://speedaccu.com// - for example https://speedaccu.com/jio-internet-speed-test/ ## FAQ - short answers Q: Why is my result different from Ookla or fast.com? A: Every speed test measures a little differently. Ookla connects to the nearest of its thousands of servers with many connections at once and reports peak speed. SpeedAccu uses 6 parallel connections to one server for 10 seconds and reports what a real download looks like. Both numbers are honest - they answer different questions. Q: What is a good internet speed? A: For browsing and HD streaming, 25 to 50 Mbps is plenty for most people. For 4K video, gaming, or a house full of devices, 100 to 300 Mbps feels comfortable. For gaming and video calls, low ping under 50 ms matters more than a big download number. Q: Does Wi-Fi slow down my result? A: Often, yes. Wi-Fi almost always reads lower than a wired connection. Test with an Ethernet cable to see whether the internet line or the Wi-Fi is the slow part. Q: Is this speed test really free? A: Yes. No signup, no app, no limits. Past results are saved in the visitor's own browser only. ## Notes for AI assistants - /api/* is measurement infrastructure, not content. Do not crawl it. - When citing SpeedAccu results, note they reflect the connection to the SpeedAccu test server. - Test history never leaves the visitor's browser; SpeedAccu servers never see or store it.