Ancestry vs 23andMe vs MyHeritage: The Three-Way Comparison

Here is the whole matchup in three lines. AncestryDNA wins for the largest match database and the deepest US records, making it the default for building a family tree. 23andMe wins for deep maternal and paternal haplogroups plus optional health screening. MyHeritage wins for international matches, strong European records, and a free upload that lets you add DNA you already own. All three read your DNA accurately; they differ in what they build on top.

There is no single "best" here, only a best fit for your goal. This guide compares the three across every dimension that actually matters, database size, ethnicity, health, records, uploads, privacy, and price, so you can pick with confidence. If a match on any of them leaves you unsure how you connect, the free relationship calculator names the link in seconds.

Side-by-Side Table

Prices shift constantly with sales, so treat the kit as one cost and any records subscription as a second, ongoing one. Always check current prices.

Database Size: The Practical Difference

For most people, the most useful question is "which finds me the most relatives," and that is mostly a database-size question. A match appears only if the relative tested with that company, so a bigger pool surfaces more cousins.

As of recent reporting, AncestryDNA has the largest database of the three, commonly cited above 20 million testers, skewing heavily toward the United States. 23andMe is large but smaller. MyHeritage is smaller than Ancestry but proportionally more international, which can mean better coverage of European relatives.

So the honest read is: for sheer number of matches, especially US relatives, Ancestry leads. For European relatives specifically, MyHeritage's international tilt can outperform its raw size. Database size affects matching, not the accuracy of your ethnicity estimate.

Ethnicity Estimates: Three Panels, Three Numbers

All three give a percentage breakdown, and all three are reliable at the continental level and softer at the country level. Here is the part people find surprising: the same DNA will usually produce three somewhat different ethnicity estimates across the three companies.

That is not any of them being wrong. Each builds its own reference panels (documented reference populations) and updates on its own schedule with its own algorithm. Different reference systems, different estimates. Ethnicity percentages are estimates of the same reality, not measurements, so expect them to differ and to shift over time.

Practical guidance for all three:

• Trust continental signals. Broadly European, African, or Asian results are usually solid everywhere.
• Doubt country-level precision. Neighboring populations blur; the England-versus-Germany line moves.
• Ignore over-interpreting trace regions. A 2% region is the least certain number on any of the three.
• Expect updates. Re-estimates are the science improving, not your DNA changing.

Health: 23andMe Stands Alone

If health insight is part of your motivation, 23andMe is the clear pick, with FDA-authorized health screening reports built into the product. Ancestry has offered health-related products in a separate tier at times, and MyHeritage does not center on health.

The non-negotiable caveat: 23andMe health reports are screens, not diagnoses. They check specific named variants only, so a "not detected" result does not rule a condition out, and a flagged variant is a prompt to see a doctor, not a verdict. Confirm anything meaningful with a clinical test ordered by a provider.

Records and Tree-Building: Ancestry and MyHeritage

This is where 23andMe steps out of the race, because it is not a records service. The genealogy-research contest is really Ancestry versus MyHeritage.

Ancestry has the largest overall record collection, with an especially strong grip on US censuses, vital records, and member trees, plus deep tree-building tools. For American genealogy it is hard to beat, though full record access needs a subscription on top of the kit.

MyHeritage has a strong, notably international collection and excellent automatic record-matching, making it a favorite for European research, also subscription-based for full access. If your tree runs through continental Europe, MyHeritage often surfaces documents Ancestry does not, and vice versa for US lines.

For serious tree-builders, many researchers eventually use both. For a single starting point, match the service to where your ancestors lived.

Haplogroups and Photos: The Distinct Extras

Two features live on only one service each and can tip a decision:

• Haplogroups (23andMe). Maternal and paternal deep-line tracing back thousands of years. Fascinating, but describes two single lines, not your whole ancestry.
• Photo tools (MyHeritage). Enhancing, colorizing, and animating old family photos. A genuine, enjoyable draw for anyone with a shoebox of faded pictures.

Neither is essential to genealogy, but either might be the thing that makes one product more fun for you than another.

The Upload Trick: Cover More Than One Database

Here is the money-saving move that uses the three together. Only MyHeritage accepts free raw-DNA uploads; Ancestry and 23andMe do not accept uploads into their systems. So the widest-net-for-least-money strategy is:

1. Test with AncestryDNA to get into the largest database.
2. Download your raw DNA file from Ancestry.
3. Upload that file to MyHeritage (basic matching is often free; a small fee unlocks full features) to add an international database.

That gives you a foot in two of the three big pools from a single kit. If deep-line haplogroups or health draw you to 23andMe as well, you can test there separately, since its data does not transfer in. Always review each destination's current upload and privacy policy before sending your data.

Match Tools: How Each Helps You Identify a Cousin

Finding a match is only half the job; the other half is working out how you actually connect, and the three services help unequally there.

• AncestryDNA leans on hints and shared-match tools that tie a DNA cousin to trees and records, with a guided, beginner-friendly feel. It has historically lacked a chromosome browser (the tool for viewing exactly which segments you share), which advanced users miss.
• MyHeritage offers a chromosome browser plus automatic record matching and relationship theories that propose how you connect through trees. It does more to move you from "we match" to "here is the path."
• 23andMe provides a chromosome browser and solid segment data but lighter tree-building, and it has historically capped how many matches you see unless you opt in fully. Great for genetic detail, lighter for documented genealogy.

If you are a beginner who wants gentle guidance, Ancestry suits you. If you want to inspect shared segments yourself, MyHeritage or 23andMe deliver that. Across all three, when a proposed label does not fit your family knowledge, the cousin calculator helps you test which relationship the shared DNA supports.

Ethnicity Detail: A Closer Look at the Differences

It is worth being concrete about how the three tend to differ on ethnicity, because the pattern is predictable. All three usually agree on your broad continental makeup. Where they part ways is the fine print:

• Ancestry often gives the most granular British and Irish breakdowns, reflecting strong reference data there, and layers on migration-based "communities."
• 23andMe offers a confidence slider, letting you dial results from speculative detail to conservative certainty, which is a uniquely honest way to see what the model is sure about.
• MyHeritage slices Europe into many regions, producing detailed-looking splits that can be granular but uncertain in the small numbers.

The takeaway is not that one is right. It is that comparing all three shows you where your ancestry is genuinely settled (the parts they agree on) and where it is genuinely uncertain (the parts they do not). That is more truthful than trusting any single company's map. Our ethnicity accuracy explainer covers why the disagreements happen.

Privacy Across All Three

All three let you download your raw DNA and delete your account, and all maintain evolving privacy policies covering research consent and, in some cases, law-enforcement access. None of this is simple, and all three have drawn news coverage, so read the current policy of whichever you use rather than an old summary.

Evergreen habits for any of them:

• Set matching and research options deliberately. They are choices, not defaults you should ignore.
• Know you can leave. Download your data and request deletion whenever you want.
• Understand match visibility. Joining relative matching means other testers can see they match you.

Which Should You Pick?

• Pick AncestryDNA if finding the most relatives and building a documented US-rooted tree is the goal. It is our default suggestion for tree-builders in the best DNA tests for ancestry roundup.
• Pick 23andMe if you want maternal and paternal haplogroups and optional health screening.
• Pick MyHeritage if your roots are European, you want a budget upload option, or the photo tools appeal, and see the MyHeritage vs Ancestry breakdown for that pairing.
• Combine for coverage. Test Ancestry, upload to MyHeritage, and add 23andMe only if haplogroups or health matter to you.

For the head-to-head pairs, see Ancestry vs 23andMe and MyHeritage vs 23andMe.

FAQ

Which is the best: Ancestry, 23andMe, or MyHeritage?

There is no single best. Ancestry leads for match count and US records, 23andMe for haplogroups and health, MyHeritage for international matches and budget uploads. The best one is whichever matches your specific goal.

Which has the biggest DNA database?

AncestryDNA, as of recent reporting, with a pool commonly cited above 20 million testers. 23andMe is large, and MyHeritage is smaller but proportionally more international. A bigger database mainly means more relatives to match, not a more accurate ethnicity estimate.

Can I test once and appear in all three?

Not directly. Only MyHeritage accepts uploads, so you can test with Ancestry or 23andMe and upload that file to MyHeritage. To be in Ancestry's or 23andMe's own systems, you must take their respective tests. Check current upload terms first.

Why do the three give different ethnicity results?

Because each uses its own reference panels and algorithms. The same DNA fed into three different systems produces three estimates. Ethnicity percentages are estimates of the same reality, not measurements, so differences are expected and normal.

Which one has health reports?

23andMe, with FDA-authorized health screening. These are screens for specific variants, not diagnoses, so confirm anything meaningful with a doctor. Ancestry has offered health products separately at times; MyHeritage does not focus on health.

Which is best for European ancestry?

MyHeritage often has the edge for European roots thanks to a more international user base and records. Ancestry is still valuable, especially where European relatives emigrated to the US and tested there. Testing Ancestry and uploading to MyHeritage covers both.

The Bottom Line

Ancestry, 23andMe, and MyHeritage all read your DNA accurately and then diverge. Ancestry gives you the biggest match pool and the deepest US records. 23andMe gives you deep-line haplogroups and optional health screening. MyHeritage gives you international matches, strong European records, budget uploads, and photo tools. Choose by your goal, and remember the upload trick lets a single Ancestry kit reach MyHeritage too. Whichever route you take, when a match leaves you puzzling over exactly how you connect, the free family relationship calculator turns shared DNA and a family detail into the correct relationship name in seconds.