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99.9% Uptime Guarantee? Here’s Why It’s Complete Nonsense In 2020.

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Why You Should Ignore Your Host's Uptime Guarantee

Do you know your host's uptime guarantee?

Is it 99%? 99.9%? Or maybe even 100%?

In practical terms, it doesn't actually matter.

Hosting companies make a big deal about uptime guarantees. But they rarely compensate customers if they break them. Uptime guarantees are attractive when used in a marketing pitch, but even the best guarantee won't stop your site going offline.

How Much Downtime is Acceptable?

First, let's look at exactly how much time is behind the percentages.

An average 30 day month has 43,200 minutes within it (30 days x 24 hours x 60 minutes). Let's take a look at some common uptime guarantees to see how many minutes of downtime is allowed before the guarantee kicks in.

  1. 99% allows your site be down for 432 minutes (more than 7 hours) per month before you can claim.
  2. 99.9% allows almost 45 minutes of downtime. Most hosts can do hardware changeouts in under 30 minutes, so this comfortably allows for at least one hardware failure per month. (This is the uptime promise advertised by Godaddy and Hostgator, amongst others.)
  3. 99.99% allows for just under 5 minutes of downtime per month. As cloud and CDN hosting become more widespread, 99.99% and 100% guarantees are becoming more common, but it's still fairly difficult to find a host that offers them.

Additionally, some hosts measure downtime over a quarter, or even a year, so a big outage would be 'absorbed' by good service in consecutive months.

How much downtime would you tolerate? Ideally, none at all. But your host is probably giving themselves more leeway than you thought.

How is Downtime Defined?

There are dozens of reasons why your site could go down, but only a handful are actually covered under a typical uptime guarantee.

Here are a few examples of downtime that doesn't count:

  • User Error. Hosts won't cover downtime you've caused yourself (which is reasonable).
  • Server Maintenance. Planned outages for server upkeep are not covered. If the planned outage takes longer than expected, that isn't covered either.
  • Whatever your host says doesn't count. Different hosts have different rules, and some hosts allow themselves a lot of scope for downtime - even unexpected downtime. Some will only accept claims related to their hardware failing, and some won't cover you if an upstream provider has issues.

How Much Would You Be Compensated?

Getting paid what you're due could be difficult.

Hosts rarely refund the service fee for the bad month in cash. You will probably find you're only covered for the time the site was actually offline.

If you do get a refund, it'll probably be posted to your account as a credit.

In some cases, the credit won't cover anywhere near a full month's fees.

By the time you accrue enough money to warrant chasing that refund, you've done damage to your site and your business because you've tolerated downtime and poor service.

Should I Care About Uptime Guarantees?

In this article, we've demonstrated that uptime guarantees are very varied. Some are worth relying on. Some aren't. None will protect you against downtime or compensate you for lost business.

Web hosting companies advertise uptime guarantees to make their service look better on paper. In many cases, they offer a false sense of security.

To find a really good host, rely on reviews and ratings - not the figures in the uptime guarantee.

Claire Broadley

About Claire Broadley

Claire has been creating websites for over 20 years and has been using WordPress for over ten. She is an expert in web hosting, design, HTML, and more. She lives with her husband and son in the United Kingdom.


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July 29, 2014

What can I do if our hosting provider didn’t fulfill the up time guarantee



September 21, 2015

As far as my host is concerned they are giving me 100% uptime even though they have promised 99.9% uptime. I am using ZynoHost. I am using it from past 1 year and quite satisfied with it.


Richard E Tucker

January 1, 2016

I can think of two scenarios when it is not worth ignoring your hosts uptime claim:
1 – when they actually measure and publish their performance (that said, I’ve never seen this)
2 – when they provide evidence of why their uptime would be more than others – I have seen this provided. For example, some hosts (for a big price) provide highly available infrastructure split across two data centres – this provides significantly more available host uptime than just one server in one data centre, especially if the server is shared. So for this point, “you get what you pay for”.



January 14, 2016

ummm…a 31 day month has (31 days x 24 hours x 60 minutes) minutes in it.


Frank Moraes

January 15, 2016

@me – Sorry about that! And it took five and a half years for someone to notice it; amazing. I fixed it. Thanks!