Quick answer
Not very, for any single domain. Automated appraisal tools estimate value from patterns such as length, keywords, extension and past sales of similar names, so they give a rough starting point at best. They cannot see who actually wants the name, trade mark risks or private sale prices. Treat the number as a hint, never a price.
Type a domain into an instant appraisal tool and you get a confident figure, often with pounds or dollars and no hedging. It is easy to take that number into a negotiation, either as a seller hoping for it or as a buyer being shown it. Both are mistakes. A domain is worth what one particular buyer will pay, at one particular time, and that is exactly the information an algorithm does not have.
What the tools look at, and what they miss
| What automated tools typically weigh | What they cannot know |
|---|---|
| Length and how easy it is to spell | Whether a specific business wants it right now |
| Dictionary words and keyword search volume | Whether the name clashes with a trade mark |
| Extension, such as .com or .co.uk | Private sales that were never published |
| Sales of names that look similar | The domain’s history, penalties or past use |
| Whether related names are registered | Real traffic and who it comes from |
The result is an estimate built on averages. Averages can be reasonable across thousands of names and badly wrong for the one name you care about.
Why the numbers swing so much
Run the same domain through two or three tools and you will often get very different figures. That is not because one is broken. Each uses different data and assumptions, and the market itself is thin: most domains never sell, and many sales happen privately, so there is not much reliable price data to learn from. Short, generic .com names have the most comparable sales and the most consistent estimates. A distinctive .co.uk name for a local trade has very few comparables, so the estimate is closer to a guess.
The risks an appraisal will not mention
Trade marks. A domain that matches someone else’s brand can be valued highly by a tool and still be a liability. Disputes over .uk names can be brought through Nominet’s Dispute Resolution Service, and for .com and many other extensions through the processes described by WIPO’s domain name disputes centre. Buying a name that invites a complaint can mean losing it. Check the trade mark register before paying anything significant, and read our guide to copyright and trade marks for how brand rights work.
History. A previously used domain may carry baggage, such as spam, a penalty or an unrelated old business. Look at what was on it before you buy.
Fit. A “valuable” generic name may still be wrong for your business if customers will not connect it to you.
Better ways to judge a domain’s value
- Ask what it is worth to you. For a buyer, the value is what the name saves or earns: easier recall, fewer misspellings, a better match to your brand. Our domain names guide covers what makes a name work for a UK business.
- Look at the alternatives. If a close, available name works nearly as well for the price of a normal registration, the premium name is worth only the difference in benefit. Our business name checker helps test alternatives.
- Get a human appraisal for big decisions. Marketplaces such as Sedo offer professional domain appraisals; Sedo’s US page listed them from $99 when we checked in November 2026. A person can weigh context an algorithm cannot.
- Remember the seller’s view. An owner quoting an appraisal tool is anchoring. The figure they show you is a negotiation opener, not a market price.
If you are selling a domain
An appraisal figure rarely sells a name on its own. Buyers respond to a clear asking price, a short explanation of why the name suits businesses like theirs, and a safe way to pay. If you own a name that matches a local trade and a town, the most likely buyer is a business in that trade and town, not a domain investor, so price it with them in mind. And be realistic: a name that has sat unsold for years at an appraised value is telling you something the appraisal did not.
If the name relates to a business you are closing or rebranding, decide whether to keep it first. Letting a domain lapse means anyone can register it, including someone who will redirect your old customers elsewhere.
If you are buying a premium domain
Set your budget from the value to your business, not from an appraisal screenshot. Check trade marks and history, use an escrow service or a reputable marketplace for payment, and make sure the domain is transferred into an account in your own name, not a developer’s; our guide on when someone else owns your domain explains why that matters.
If you would rather not negotiate yourself, our premium domain sourcing is from £99 and finds and acquires short, memorable .co.uk and .com names from the aftermarket. If you are still choosing a name, our guide to business name ideas is a good place to start, and all our prices are on the pricing page.
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Frequently asked questions
Why do domain appraisal tools give different values? +
Each tool uses its own data and assumptions about length, keywords, extension and comparable sales, and the domain market is thin: most names never sell and many sales are private. With little reliable price data, estimates for the same name can differ widely, especially for distinctive or .co.uk names with few comparable sales.
Is a free domain appraisal worth anything? +
As a rough starting point, yes. It can tell you whether a name has the traits that tend to sell, such as short length or a strong keyword. It cannot tell you whether any particular buyer wants it, whether it clashes with a trade mark, or what similar names sold for privately, so never treat it as a price.
How do I find out what a domain is really worth? +
Work out what it is worth to the business that would use it, compare it with available alternatives, check trade marks and the domain's history, and for significant sums consider a human appraisal. Sedo's US page listed professional appraisals from $99 at the time of writing. Ultimately, the value is what a willing buyer pays.
