Upload vs Download Speed: What’s the Difference?

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If you’ve ever streamed 4K video, downloaded a game, sent a video clip, or just waited through a slow connection, you may have thought about your Internet speed.

How fast does Internet speed need to be?

Your ideal speed can vary depending on what you’re doing, with two different numbers, download speed and upload speed, that can impact your overall experience.

What speeds are best? How does this all work on your phone? What is Mbps? This Optimum guide breaks it all down.

What’s the Difference Between Uploading and Downloading?

The difference between uploading and downloading is actually pretty easy to understand. A download is when your phone or computer receives data. This can be data you're planning on saving, like a photo, or data that's temporary, like when you stream a video or music. Uploading is the opposite: it involves your device sending data somewhere else. Sharing videos and photos on YouTube or social media and video calling are good examples.

What is Upload Speed?

Put as simply as possible, an upload is when you send data (a video, a picture, a text message) from your devices to the rest of the Internet. Upload speed matters more for applications such as video chat, broadcasting a Twitch stream, or posting videos on YouTube or TikTok.

What is a Good Upload Speed?

A good upload speed is at least 3Mbps, it can depend on the task but 5Mbps is a generally good speed overall.

Here’s a rough breakdown of what you can do with different upload speeds:

ActivityUpload Speed
Live Streaming3-6Mbps
Video Streaming3Mbps
Music Streaming0.5Mbps

What is Download Speed?

A good download speed is at least 25Mbps.

Here’s a rough breakdown of what you can do with different download speeds:

ActivityDownload Speed
HD teleconference6Mbps
HD streaming5-8Mbps
SD streaming (i.e. Netflix, Hulu, etc.)3-4Mbps
Personal video call (i.e. Skype or Zoom)1Mbps

How to Measure Upload and Download Speed

When looking into Internet speed, you’ll come across the highly similar terms “megabit” and “megabyte.” While very close in name, these two measurements are not interchangeable.

What is the Difference Between Megabit and Megabyte?

Megabits are used to measure transmission speed, but megabytes are used to measure data size.

Download and upload speeds are always listed in megabits per second (or Mbps), so that’s what you should be looking at.

Upload speed tends to be slower than download speed. This makes sense: you don't need blazing upload speeds to join a remote meeting. So unless you're uploading a feature length film you shot in your backyard, you probably won't even notice. Still, be sure to always check the numbers: you can find out your current speed with Optimum's Speed test.

Why Do Upload Speeds and Download Speeds Change?

Upload and download speed are listed on your plan as the maximum possible speed if you’re using one device in perfect conditions.

But only so much is under your control. For instance, if too many people in your household or neighborhood use the Internet at the same time, your whole network can slow down. Conditions are rarely perfect, so getting a faster Internet connection than you technically need for a given application is recommended.

The whole family will thank you.

As for what you can control, how you connect to the Internet has the greatest impact on speed. The most common connection type for home Internet is via a wifi router, which connects to your device wirelessly. Wifi can be a little finicky: walls, distance and the number of people connected can all cause wifi to slow down. Move your router out from behind any furniture for the best results with your home wifi network and look into connection amplifier devices for more distant rooms.

The second most prevalent connection type is ethernet, which is a simple wired connection between your device and the router. An ethernet cable is by far the most reliable way to connect to the Internet, but it's not for everyone. If your house isn't wired for it or your router isn't in an easily accessible spot, an ethernet connection may not even be possible. Still, having a spare ethernet cable for those extra important video calls can be a lifesaver.

Mobile networks are different. A typical 4G LTE connection should give you a download speed of at least 35Mbps. The exact number can vary depending on your service provider and location. 5G is much faster, doubling average speeds to 70Mbps.

Why is Uploading Slower Than Downloading?

The biggest reason your upload speeds may be slow is the Internet plan itself. Some Internet providers offer maximum upload speeds that are about a tenth of the download speeds that are offered.

How to increase upload speed

There are a few ways you can increase your upload speed, here is a list of a few things to consider:

  1. Clear all temporary files
  2. Update your drivers
  3. Remove malware

Why is my Download Speed So Slow When I Have Fast Internet?

If your download speed is slow but your upload speed is fast, it could be because you have too many devices connected to the Internet. In a home filled with numerous technologies that are fighting for the same bandwidth, your devices might slow down. This can result in issues with your Internet speed and connectivity.

What Download Speed Do I Need for Streaming Videos?

Downloads and uploads usually aren't just single files of data. When you stream Netflix, your device is constantly receiving data from the Netflix servers. The same goes for a video call: your computer or phone has to send your video and audio to whoever you're chatting with.

The ideal download speed for video streaming depends on what quality you'd like to stream in, how many devices will be watching at once and which service you're using. The last bit can get a little complicated. For 4K video, Netflix (25Mbps), YouTube (20Mbps) Hulu (16Mbps) and Amazon Prime Video (15Mbps) all have different minimum recommendations.

Fortunately, the Federal Communications Commission has general recommendations. For streaming video, they recommend a minimum of 4Mbps for standard definition, 8Mbps for HD and 25Mbps for 4K UltraHD. You can go lower if you know you’re only going to stream 4K on Hulu, but these numbers are a good baseline.

You’ll also want to factor in how many people will be streaming at once. 50Mbps is fine for one or two people, but if three or four are streaming you’re gonna want to go higher. It’s hard to have a connection that’s too fast, so overshoot if you can.

What Download Speed Do I Need to Download Games?

Technically, there isn’t a required speed for downloading games. If you want to download all 182 gigabytes of Call of Duty®: Black Ops - Cold War on a 1Mbps connection, you can do it. You would just be playing over 400 hours later.

Downloading any big file is the area where the best speed is typically the fastest you can get. Big downloads take up a ton of bandwidth, and can make the Internet unusable for anyone else on the network if your speed is slow. With the recommended 4K minimum (25Mbps), Black Ops would take 18 hours. And that’s only if absolutely nothing else is using the Internet.

100Mbps is the lowest you should go if you’re downloading large files regularly. Anything above 250Mbps is the sweet spot. A 1000Mbps (or gigabit) connection is the premier option. With those speeds, Black Ops would be done in around an hour, and you’d have plenty of bandwidth to spare.

What Upload Speed Do I Need for YouTube?

If you’re a budding YouTube star (or you just want to share a video), the minimum required upload speed is 2Mbps. Unless all of your videos are ten seconds long, that’s probably too slow. An upload speed of 20Mbps will be faster and more consistent.

YouTube's servers can be finicky, and you'll see diminishing returns at higher speeds. Again, it's good to have some extra bandwidth here, especially if you or someone else is working from home and using video chat regularly.

What Download Speed Do I Need for Online Gaming?

Online gaming isn’t as demanding as you’d think. Sony recommends a minimum of 1 Mbps for the Playstation, and Microsoft says you can get away with 0.5 Mbps on the Xbox. The FCC recommends 4 Mpbs. That’s a solid recommendation, anything higher is more than enough.

The stability of your connection is much more important. When you play multiplayer, your console sends out a lot of small packets of data. If anything disrupts the signal, you'll notice. Make sure your console is close to your router, and use a wired connection if you can.

What Upload and Download Speed Do I Need for TikTok?

TikTok is an interesting case. Most videos on the platform are 60 seconds or less, and the video quality is lower compared to YouTube. A solid upload and download speed of 5Mbps or more is enough to upload and watch videos on the app.

But that only applies if your phone is connected to wifi. If you're using cellular data, it's worth it to be a bit more careful. While you don't need to worry about speed, you'll want to pay attention to how long you're using the app. Watching videos on TikTok uses about a gigabyte of data an hour, and that's if you're not downloading clips. If you don't have an unlimited cell data plan, use TikTok on wifi whenever possible.

What Upload and Download Speed Do I Need for Remote Work?

Zoom, Google Hangouts, Skype, Slack: video calls are a standard part of most people's workflows nowadays. They're a necessity and they can be incredibly frustrating if your internet isn't up to snuff.

Like video streaming, your computer is constantly downloading data during a video call. It’s also uploading your voice and video to everyone else in the call. It’s not as strenuous as it sounds: for group calls, 8Mpbs down and 1.5Mbps up is enough for clear sound and video. You can get away with lower for one on one calls, but your video and audio quality will suffer.

A rock solid connection is even more important. On an unreliable network, your voice and video will drop in and out and you'll struggle to hear other people. A wired connection is the best solution, but even just making sure you're close to your router before a call can be enough.

"Get closer to your router" is the "turn it on and off" of download speed advice. It's dead simple and it'll fix most of your problems. The fastest connection in the world won't make a difference if your router is in the basement and you're on a laptop on the third floor.

Still, fast download speeds are always great. And in this day and age, fast upload speeds are a necessity. Now that you've got the knowledge, it's time to find the right plan.

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