Uptime is the time a server is up and running. If a website is up 99% of the time over a month, it has 99% uptime for that month. It’s an essential factor when signing up for a web host.
Uptime Guarantee is a commitment or promise made by the hosting companies to ensure their hosting services will be available and operational for a specified percentage of time.
For example, a 99.9% uptime guarantee means that the service promises to be accessible 99.9% of the time. If they fail to deliver this, you may ask for compensation.
What is an Uptime Guarantee?
An uptime guarantee is a promise made by the service provider to maintain a certain level of service availability.
If a provider offers a 100% uptime guarantee, it means they aim for zero unplanned downtime and will compensate you for any they cause. It doesn’t mean your site can never go down.
If the service fails to meet this guarantee, the provider may offer some form of compensation like credits.
In practice, that compensation is almost always a service credit on your next bill, not a cash refund. Before you trust a guarantee, read the fine print:
- Exclusions: scheduled maintenance and problems you cause yourself usually don’t count as downtime.
- Credit size: credits are often small and capped. Bluehost, for example, offers up to 5% of that month’s hosting fee on its shared plans.
- You have to ask: most hosts don’t pay credits automatically. You need to contact support within a set window (30 days at Bluehost, within three months of the billing cycle at DigitalOcean).
Want to see what a percentage means in real minutes? Try our uptime and downtime calculator.
Best Hosting Providers for Best Uptime Guarantee
| No. | Hosting Provider | Uptime | Uptime Guarantee | Compensation |
|---|---|---|---|---|
| 1 | Liquid Web | 99.9992% | 100% | Yes |
| 2 | DigitalOcean | 99.99% | 99.99% | Yes |
| 3 | Vultr | 99.99% | 100% | Yes |
| 4 | DreamHost | 99.98% | 100% | Yes |
| 5 | Hosting.com (formerly A2 Hosting) | 99.9% | 99.9% | Yes |
| 6 | InMotion | 99.9% | 99.99% (Power and Pro plans) | – |
| 7 | Hostinger | 99.9% | 99.9% | Yes |
| 8 | HostGator | 99.9% | 99.9% | – |
Conclusion
While no hosting service can truly provide 100% uptime, an uptime guarantee is a written promise about reliability, and it tells you how much the host is willing to put on the line.
Be sure to understand what uptime and uptime guarantee each hosting provider offers and how it aligns with your business needs.
