--- title: "Free VoIP Speed Test: Is Your Connection Ready?" description: "Free VoIP speed test in 30 seconds: latency, jitter, upload and download speed, access to calling servers and an estimated MOS score. Plain-English advice, no sign-up." url: https://skipcall.io/en/tools/voip-speed-test language: en --- [Free tools](https://skipcall.io/en/tools) # Test your connection’s VoIP quality One click, under thirty seconds: we measure what makes a call clear (latency, jitter, speed, access to calling servers) and tell you what to do if something is off. Plain words, no jargon Under 30 seconds · nothing to install - Latency - Jitter - Speed - Calling servers No form, no account. Skipcall does not receive your results. What the test does not measure ## How this VoIP speed test works An internet call (VoIP) cuts your voice into small packets sent every 20 milliseconds. For the call to be clear, those packets must arrive quickly, at a steady pace, and not get lost on the way. This VoIP quality test checks exactly those three things, right from your browser, with nothing to install. It starts by contacting our calling servers in several regions of the world: an encrypted connection to each one, and a check that UDP, the protocol that carries your voice, can leave your network. It then measures latency, jitter and upload and download speed against the measurement server closest to you. From those measurements, the tool calculates an estimated quality score out of 5 (the MOS score) and gives advice suited to your result. The whole VoIP test takes about thirty seconds. ## Understanding latency, jitter and packet loss These three measurements decide call quality far more than the headline speed of your internet plan. A very fast fibre connection can give poor calls if it is unstable, and a modest connection can be enough if it is steady. - Latency (or ping) is the round-trip time between your computer and a server, in milliseconds. Under 150 ms, conversation feels natural; above 300 ms, people start talking over each other. - Jitter measures how irregular that delay is. If some packets arrive in 20 ms and others in 90 ms, the phone has to put them back in order and your voice sounds robotic or choppy. Benchmark: under 30 ms. - Packet loss is the share of packets that never arrive. Above 1%, syllables disappear. This test does not measure it (see why below). - The MOS score (Mean Opinion Score) sums it all up on a scale of 1 to 5, as if listeners were rating the call. Above 4, quality is considered good; with the G.711 codec, the model tops out around 4.4. ## What internet speed do you need for VoIP? Less than you might think. A VoIP call uses about 100 kbps in each direction with the G.711 codec, and less with Opus. An upload speed of 1 Mbps is therefore plenty, as long as nothing else is saturating it. The direction that matters most is upload, the one that sends your voice. It is often the weak spot of DSL and 4G connections. This test keeps the weaker of the two directions and leaves headroom for the rest of your activity. - 1 call: about 0.1 Mbps up and down. - Test benchmark: at least 0.8 Mbps in the weaker direction, to keep comfortable headroom. - Beyond that, more speed does not improve your voice: stability (latency and jitter) is what makes the difference. ## How to improve your VoIP call quality Most audio problems come from the local network, not the carrier. Here are the fixes, from most to least effective. - Plug in with Ethernet: a cable removes most of the jitter caused by Wi-Fi. - On Wi-Fi, prefer the 5 GHz band and move closer to the router; avoid cheap repeaters. - Turn off your VPN during calls, or have voice traffic excluded from the tunnel. - Stop large transfers: file syncing, updates, video streaming. - Ask your IT team to allow outbound UDP and your VoIP provider’s domains. - Use a wired headset with a microphone rather than your computer’s speakers. - Keep a backup: your phone’s 4G or 5G hotspot. ## Good connection, still bad sound? A perfect connection cannot rescue a mic that is too far away, a Bluetooth headset stuck in hands-free mode, or echo. The mic and headset test measures your voice level, background noise and echo, then plays your voice back to you. [Test my mic and headset](https://skipcall.io/en/tools/mic-test) ## What this test does not measure - Packet loss: measuring it requires exchanging UDP packets with a relay server (TURN), which needs credentials. So we do not show it rather than make it up, and the score assumes 0% loss. - The MOS score is an estimate calculated from latency and jitter, not the score of a real call. A real call may do better or worse. - Latency is measured to the nearest measurement server, not along the exact path of a call. It gives a good idea of the quality of your access. - A connection varies during the day: run the test again when calls are causing problems, and on the device concerned. - During the test, your browser contacts a measurement server and telephony servers, which see your IP address like any website. No result is sent or stored. The tool area is hidden from the site’s analytics tools. ## A phone system built for these conditions Skipcall runs in the browser and on mobile, relies on telephony infrastructure in several regions of the world and hosts customer data in the European Union. Business VoIP starts from $25/month per licence, no commitment. [Discover Business VoIP](https://skipcall.io/en/business-voip) [See pricing](https://skipcall.io/en/pricing) ## A calendar full of meetings starts with a call. [Get started now](https://app.skipcall.io/signup) [Book a demo](https://skipcall.io/en/demo) **No commitment** · Number live in 2 minutes ## Frequently asked questions about VoIP quality **Does the test record my voice?** No. The microphone test is optional: it shows the sound level live, but nothing is recorded or sent, the sound stays in your browser. The rest of the test does not use the microphone at all. **Does VoIP work on 4G or 5G?** Yes, if the signal is good. Good 4G coverage usually offers enough latency and upload speed for calls. The weak point is stability: on the move or at the edge of coverage, jitter rises. Run this test over your phone’s hotspot to check. **Wi-Fi or cable: which is better for calls?** An Ethernet cable, whenever possible. Wi-Fi shares the airwaves with neighbours and other devices, which creates jitter. If you stay on Wi-Fi, choose the 5 GHz band and stay close to the router. **Why does my voice sound choppy during calls?** Usually because of jitter or packet loss: voice packets arrive out of order or not at all. Common causes: congested Wi-Fi, a VPN, a download in progress, or a firewall blocking UDP. The test tells you which of these to look into. **What internet speed do I need for VoIP?** Very little: about 100 kbps per call in each direction. Upload speed matters most, and connection stability even more. The test rates speed as good from 0.8 Mbps in the weaker direction. **What MOS score do I need for good call quality?** Above 4, quality is good to excellent. Between 3.1 and 3.6, the call works but is tiring; at 3 or below, it becomes painful. Our score is an estimate based on your measurements, not the score of a real call. **Why test access to calling servers?** Some corporate networks block telephony servers or UDP: the internet connection works, but calls fail. The test checks that our calling servers respond in each region and that UDP can leave your network.