Logo: © GEDmatch / Verogen Inc. / QIAGEN N.V. Used for editorial purposes. Source: gedmatch.com.
If you’ve been doing genetic genealogy for any length of time, you’ve almost certainly heard of GEDmatch. It occupies a unique position in the DNA research landscape: a third-party platform where you can upload raw DNA data from any testing company and compare it against a database that cuts across the walls separating AncestryDNA, 23andMe, FamilyTreeDNA, MyHeritage, and Living DNA users. For serious researchers working to identify matches across multiple platforms, it remains an indispensable tool — and one worth understanding clearly, including both its capabilities and its significant privacy considerations.
What Is GEDmatch?
GEDmatch is a web-based DNA analysis and matching service found at gedmatch.com. Founded in 2010 by two amateur genealogists — Curtis Rogers and John Olson[1] — it was built on a simple and powerful idea: create a common database where people who tested at different companies could still find each other as matches. The name combines GED[2] (from GEDCOM, the genealogy data standard) with “match,” reflecting its dual roots in both documentary and genetic genealogy.
GEDmatch accepts raw DNA uploads from all major testing companies, including AncestryDNA, 23andMe, MyHeritage, FamilyTreeDNA, Living DNA, and others. Once uploaded, your DNA can be compared against the entire GEDmatch database using a range of free and paid analytical tools — regardless of where you or your matches originally tested.
Ownership has changed several times since those early days. GEDmatch was acquired in 2019 by Verogen, Inc., a forensic genomics company[3], and Verogen was subsequently acquired by QIAGEN, a Netherlands-based life sciences corporation. The consumer genealogy site continues to operate at gedmatch.com, while a separate portal — GEDmatch PRO — serves law enforcement agencies.[4]
⚠️ The Privacy Question: What Every User Must Understand
GEDmatch gained widespread public attention in 2018 when law enforcement used its database to identify a suspect in the Golden State Killer case — one of the most significant cold-case breakthroughs in recent memory. That event brought intense scrutiny to GEDmatch’s privacy practices and set off a debate in the genealogy community that continues today.
Under current policy, every user must choose a privacy setting for each DNA kit they upload. The four options are: Private (no comparisons with anyone), Personal Research (one-to-one comparisons only, not shown in others’ match lists), Opt-Out (available for genealogical matching but not to law enforcement), and Opt-In (available for all comparisons including law enforcement). The default is Opt-Out — you must actively choose to make your kit available to law enforcement searches.
This is a decision every user must make thoughtfully and personally. The genealogy community is genuinely divided on the ethics of law enforcement use of consumer DNA databases. Some researchers choose to opt in, believing the public safety benefits justify sharing; others opt out entirely, prioritizing genetic privacy. What matters for any DFA member considering GEDmatch is that you understand exactly what each setting means before uploading — and that you review your settings periodically, as policies can and do change.
The Free Tools
GEDmatch’s free tier offers a substantial suite of tools that serious genealogists will find valuable:
One-to-Many: The workhorse of GEDmatch. Enter your kit number and the tool returns a list of your closest matches in the database, sorted by shared DNA. Crucially, because GEDmatch draws from all testing companies, you’ll find matches here that you’d never find on any single company’s platform. The free tier shows your top 2,000 matches.
One-to-One Autosomal Comparison: Compare two specific kits in detail, viewing exactly which chromosomes share DNA segments, the size of those segments in centimorgans (cM) — a unit of genetic distance —, and where on each chromosome the overlap occurs. This is the foundation of segment analysis.
One-to-One X-DNA Comparison: The same tool applied specifically to the X chromosome — useful for tracing specific lines of inheritance given X-DNA’s distinctive inheritance pattern.
Admixture/Heritage: A collection of ethnicity estimation tools using several different reference populations and analytical models. These tend to be of more interest to researchers curious about deep ancestry than for practical genealogy, but they can provide useful perspective alongside results from your testing company.
Are Your Parents Related?: A quick analytical tool that checks for evidence of pedigree collapse or endogamy in your DNA — relevant for researchers working with populations where historical intermarriage was common.
Archaic DNA Matches: Compares your DNA against ancient DNA samples, providing context about deep prehistoric ancestry.
Tier 1: The Paid Tools
GEDmatch’s Tier 1 subscription, currently priced at $10 per month, unlocks a set of advanced tools that are genuinely worth the cost for researchers doing serious segment analysis:
Segment Search:[5] Find all people in the GEDmatch database who share a specific chromosomal segment with you — a powerful tool for identifying which ancestors a shared segment comes from.
Triangulation: Identify groups of three or more people who all share DNA on the same chromosomal segment — strong evidence that those matches share a common ancestor. Triangulation is one of the most powerful techniques in genetic genealogy, and GEDmatch’s implementation of it remains among the best available.
Expanded One-to-Many: View up to 3,000 matches instead of 2,000, with additional filtering and sorting options.
Multiple Kit Analysis: Compare several kits simultaneously, with 2D and 3D chromosome browser visualizations showing how a group of related matches overlap — invaluable for cluster research and for establishing which branch of the family a set of matches comes from.
Phasing: Separate your DNA into the portion inherited from each parent — useful for researchers who have tested both parents or close relatives.
Why GEDmatch Still Matters
The major testing companies — Ancestry, 23andMe, MyHeritage, FamilyTreeDNA — each operate closed matching systems. A match at AncestryDNA cannot see your results at 23andMe, and vice versa. GEDmatch breaks down those walls. For a researcher with DNA tests at multiple companies, or one trying to connect with a specific match who tested at a different company, GEDmatch provides a common ground that no single company’s platform can replicate.
The segment-level tools available at GEDmatch — particularly One-to-One comparison, Segment Search, and Triangulation — also go substantially deeper than what most testing companies offer on their own platforms. AncestryDNA, for example, provides no chromosome browser at all. GEDmatch fills that gap for Ancestry testers who want to do serious segment work.
For Dillman Family Association (DFA) members engaged in genetic genealogy research on Dillman lines, uploading to GEDmatch and connecting your kit to your WikiTree profile expands your reach significantly — and, as noted in our earlier WikiTree article, WikiTree displays GEDmatch kit IDs directly on DNA-linked profiles.
Getting Started
Uploading to GEDmatch is straightforward. Download your raw DNA data file from your testing company (all major companies provide this under your account settings), then create a free account at gedmatch.com and follow the upload instructions. Your kit will typically be processed and available for comparison within a few hours.
Before uploading, review the privacy settings carefully and choose the option that reflects your own comfort level. You can change your privacy setting at any time using the edit icon next to your kit number on your GEDmatch home page.
Visit GEDmatch at: gedmatch.com
GEDmatch accepts raw DNA uploads from AncestryDNA, 23andMe, MyHeritage, FamilyTreeDNA, Living DNA, and other providers. Basic tools are free; Tier 1 advanced tools are available for $10/month. Users must select a privacy setting for each uploaded kit. GEDmatch is operated by Verogen Inc., a subsidiary of QIAGEN N.V.
Sources
- Wikipedia, “GEDmatch,” en.wikipedia.org/wiki/GEDmatch (accessed May 2026).
- GEDmatch, “About GEDmatch,” gedmatch.com (accessed May 2026).
- Verogen/QIAGEN, “GEDmatch,” gedmatch.com (accessed May 2026).
- GEDmatch PRO, law enforcement portal, gedmatch.com (accessed May 2026).
- GEDmatch, “Tier 1 Tools — Segment Search,” gedmatch.com (accessed May 2026).
AI Disclosure: This article was researched and written with the assistance of Claude, an AI assistant developed by Anthropic. All facts have been reviewed for accuracy, but readers are encouraged to verify information independently, particularly for time-sensitive details such as pricing and software versions.
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