All-In-One Bandwidth Monitoring:
PRTG Network Monitor


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100 Sensors, perfect for small networks

Bandwidth monitoring for professionals and consumers alike

With bandwidth monitoring it is possible to measure the actual bandwidth available on a local system. Bandwidth monitoring tools display real-time data such as download and upload speeds and help prevent network strain. Private and professional users can use bandwidth monitoring to get a true picture of what bandwidth is available.

Private users: Many private users are interested in determining the amount of bandwidth they have at their disposal. Or more precisely: if the bandwidth guaranteed by their internet service provider is indeed the amount that is available. In this context, many consumers investigate speed tests, DSL bandwidth, or whether their cell phones or tablets are able to access the respective bandwidth.

  • In addition to PRTG, which of course can help in this area, you may opt for a simple cable speed test which can be found online on a variety of different sites. Start using our bandwidth manager for your network.

Professional settings: In professional settings (businesses or large organizations), reduced bandwidth has significantly graver consequences. Disruptions lead to idleness on the part of employees and customers and a corresponding loss of sales. Administrators must promptly expose and eliminate bandwidth hogs.

  • In this instance, our PRTG bandwidth monitoring tool will help you to monitor bandwidth, detect and measure heavy bandwidth overloads, quickly recognize potential disruptions - and get down to the root of the problem.

Measuring bandwidth:
3 situations where PRTG comes in handy

Slow applications

Your co-workers complain that the programs used internally are too slow? Your customers are unhappy because your website constantly seems bogged down? Then the problem probably lies with your bandwidth.

Malfunctions when backing up

No IT can do without backups. In general, backups or database synchronizations require a great deal of bandwidth. Without the proper amount of bandwidth your network can be brought to its knees.

Problems with large file transfers

Practically every company sends large files. These files consume a correspondingly high amount of bandwidth. But bottlenecks lurking in every network slow down transfers.



With PRTG, you'll be able to promptly identify potential bandwidth overloads and quickly pinpoint the causes of crashes. One single network component overloading can swiftly result in a significant loss of bandwidth.  


“We can all work with greater peace of mind knowing that our systems are constantly being monitored.”

Markus Puke, Network Administrator, Schüchtermann Klinik, Germany


This is what bandwidth monitoring looks like in PRTG


PRTG Bandwidth Monitoring Tool SIMPLIFIES YOUR DAY!

Let PRTG test and measure your network bandwidth around the clock
so you can concentrate on day-to-day tasks with total peace of mind.


With PRTG, you get one central monitoring tool for measuring bandwidth and testing your network. You’ll enjoy a quick overview of your entire infrastructure via our dashboard and app.


Installing PRTG is quick and easy. Getting started or switching from another network and bandwidth monitoring tool is straightforward thanks to more than 200 pre-configured sensors.


PRTG is worth it. 80% of our customers report substantial savings in the area of network management. And license costs pay for themselves in an average of only 3 ½ months.

Customer example: Austria’s rail traffic relies on PRTG


OBB Logo


"Due to business-critical applications, it is of the utmost importance that the ÖBB Infrastruktur AG data network constantly run flawlessly. To make this a reality, the management installed PRTG Network Monitor. PRTG is used for the bandwidth monitoring of the central routers and switches in the data network so administrators can determine the most important key parameters for utilization and availability. In total, the monitoring consists of several thousand sensors which query the relevant values in regular intervals."

To the case study (in German)

PRTG bandwidth monitoring methods

by Kimberley; Product Evangelist

In this video, you’ll get a quick overview of the methods PRTG offers for bandwidth monitoring. Discover which method is best suited for your IT infrastructure.

View video (3:04 Min., english)

Test bandwidth: use PRTG to test with success!

You’d like to know if your ISP actually provides the bandwidth they’ve promised? Then just like many administrators, you probably perform frequent SLA checks. But how do you test bandwidth? Two challenges arise:

Challenge 1: In order to test the maximum throughput of your bandwidth, you must use your line to maximum capacity. This means there will be no more resources for other data during the test. In other words, you'll paralyze your network.

Challenge 2: For a 100% measurement, you’ll essentially need two computers which are directly located on the ends of the line whose bandwidth you would like to test. Otherwise you will also simultaneously test all network devices found on the “test track.”

For these reasons, you cannot measure the bandwidth directly over the course of the entire test, but must test the speed of the line by generating short load peaks, e.g. by downloading a small file (a few kB) every few minutes and measuring the time it takes for the download.

The solution: This is how to test your bandwidth with PRTG:

    1. Create three HTTP Advanced sensors, which access several files of circa 500 kB from a variety of "fast servers" (e.g. your ISP's static websites).
    2. Let the sensors run for a few hours with a 5-minute interval. The sensors have a channel which specify the bandwidths achieved during the file download in Kbps.
    3. If, for example, you have a data line with a specified bandwidth of 4 Mbps, the test of a 500 kB file should last 1,000 ms (1 second): 4 Megabits per second = .5 MB per second = 500 kB per second.

If your line is used by others during the test, you will see jitter (unwanted fluctuations) on the curve, for your test did not always run with the full amount of available bandwidth. If there was no other traffic on the line, your curve should closely resemble a straight line. Bandwidth checks with PRTG will allow you to monitor your network and potential bottlenecks.

Attention! If you download a 500 kB file every 60 seconds, you'll generate a data volume of 720 MB per day!

TIP: You are still new to monitoring and need a little support?

Paessler offers a free, multi-part email course covering the 4 basic methods of bandwidth monitoring: SNMP, Packet Sniffing, Flow, and WMI. Learn more about individual processes and the possibilities of using them to improve bandwidth usage in your network.

Sign up here for our free email coaching and learn how you can put your resources to better use with Paesslers bandwidth meter.


Practical tip: “Hey Mathias, what would you tell administrators who wish to monitor their bandwidth?”

“Instead of trying to measure bandwidth by way of an extra, simulated load, you should have a look around for actions which do that anyway – and then monitor them. For example, when you perform backups, you often put great strain on the bandwidth and can thus easily recognize shortages or bottlenecks.”

Mathias Hengl, PRTG Developer at PAESSLER AG

Bandwidth monitor

What makes PRTG better than the rest?

Quick troubleshooting

Looking for the causes of slow applications or other problems without a monitoring tool is long and costly. PRTG provides a comprehensive network bandwidth monitor. You get around 20 sensors just for the monitoring of your bandwidth, and these sensors can be created automatically.

Identify shortages

PRTG lets you keep an eye on your bandwidth over a longer period of time, and recognize the times when utilization has spiked. This allows you to proactively plan for more bandwidth at certain times - such as when your website is in high demand, when users tend to draw heavily upon applications, or when an update is about to take place. 

Promptly diagnose capacity

Your bandwidth is slowly reaching its limit? With PRTG, you'll know immediately when maximum capacity has been reached. This lets you plan for new resources in a timely manner.

Reduce costs

By discovering and removing bandwidth hogs, you'll increase the efficiency of your network. You'll also benefit from lasting savings. Most of the time, these measures alone quickly compensate for the costs of PRTG.

Increase morale

With PRTG as your bandwidth tester, you'll provide a stable bandwidth, boost the reliability of your network, and simply enjoy greater control of your IT infrastructure. As a consequence, you'll play a major role both in the improved performance of co-workers and in soaring customer satisfaction.


PRTG: The Swiss Army Knife for Admins


Adapt PRTG individually and dynamically to your needs relying on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems

How much does Bandwidth Monitoring
with PRTG cost?





Trial Version
The installation only takes 2 minutes
100 Sensors, perfect for small networks



Administrators must compare monitoring tools or search for a free one. There are several suppliers on the market.

PRTG comes with a full range of advantages:

1. Free starter version: PRTG offers a starter version featuring 100 free sensors which never expire. This will help you get a good feel for our network monitoring tool.

2. Over 150,000 administrators: whether in large or small businesses, authorities, colleges or administrations - all around the world, more than 150,000 administrators put their trust in our network monitoring tool, and can therefore also monitor their bandwidth. Read our case studies here.

3. Support: do you have a question? We respond in a jiffy! You can already access a great deal of information online by consulting our FAQs, manuals, videos, webcasts, or knowledge base. You can of course also send us a message. We'll do our best to get back to you within 24 hours on business days.

PRTG - more than bandwidth monitoring:

PRTG is the PAESLLER AG's all-in-one network monitoring tool. Our software is used by more than 150,000 administrators worldwide, whether it be to monitor their hardware and server performance, their virtual environments, or the accessibility of their websites. By choosing database monitoring with PRTG, for example, you'll also be able to monitor your SQL server. PRTG is a comprehensive network analysis solution for Windows.

Our network monitoring software, created in 1997, is the brainchild of Dirk Paessler. The software firm is located in Nuremberg, Germany. 

Save time, worry, and money. PRTG is installed in a matter of minutes. Enjoy 100 free sensors, plenty for small networks. Upgrade whenever you like.

Download Network Monitoring Software for Windows - Version (April 18th, 2017)
Languages English, German, Spanish, French, Portuguese, Dutch, Czech, Russian, Japanese, and Simplified Chinese
Pricing Free for up to 100 sensors (Price List)
Unified Monitoring Network devices, bandwidth, servers, applications, virtual environments, remote systems, IoT, and more...

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