Free tools
At Genetic Voyage, we believe you shouldn’t have to pay expensive monthly subscriptions or compromise your privacy just to analyze your DNA matches or explore your family trees. That is why we are committed to building powerful, interactive, and completely free genealogy tools.
Whether you are calculating the exact relationship probability of a new DNA match, visualizing shared segments on your chromosomes, or exploring a GEDCOM file without uploading your tree to public servers, our custom utilities are built to run 100% locally inside your web browser. Below, you will find our premier directory of free genealogy and DNA tools—including our interactive applications and the best free third-party utilities that every genetic genealogist should have in their research arsenal.
Unlike commercial corporate databases that store, track, or monetize your uploaded files, all custom Genetic Voyage tools run entirely inside your web browser (client-side). When you load a GEDCOM file or input DNA match data, all calculations and rendering are performed locally on your computer or phone. We do not upload your family trees or genetic segments to any server, guaranteeing absolute security for your sensitive genetic history.
🛠️ Our Interactive Applications
Client-Side AppsThese custom-built, interactive applications run natively on our site, providing high-performance, private alternatives to heavy and expensive desktop software.
DNA Relationship Probability Calculator
Sharper, Poisson-modeled relationship predictions
Go beyond static, generic cM charts. Our calculator factors in shared centimorgans (cM), segment counts, and largest segment size to calculate the exact statistical probability of every possible cousin, sibling, or ancestral relationship.
- Uses Poisson statistical modeling for unmatched accuracy
- Supports both cM values and shared DNA percentages
- Helps distinguish maternal/paternal branches in minutes
GEDCOM Tree Viewer Online
Explore your family files with absolute privacy
Opening a family file (.ged) typically requires heavy desktop software or public uploads. Our viewer lets you drag, drop, search, and navigate your tree privately right inside your browser window.
- Instant local rendering with zero upload time
- Advanced search filters for names, dates, and locations
- Browse and compare complex family branches side-by-side
DNA Chromosome Browser Online
Visualize shared chromosome segments visually
Map your physical genome. Compare overlapping matching segments on Chromosomes 1 through 22, paint genetic blocks onto an interactive map, and trace segments to specific ancestors.
- Compares up to 5 matches simultaneously on a visual grid
- Identifies overlapping triangulated segments in real-time
- Helps map segments to maternal and paternal lineages
Download 8 Free Genealogy Excel Worksheets
Managing multiple DNA matches, chromosome segment lists, and color-coded clusters can quickly become overwhelming. We have designed 8 customizable, offline spreadsheets (including Chromosome Mapping logs, Leeds Method sheets, DNA match trackers, and communication logs) to organize your research files systematically.
To break through a stubborn research brick wall, leverage our custom-built tools together in a powerful, systematic 3-step workflow:
Identify Probabilities
Enter the shared cM of an unknown match into our Relationship Calculator to find their statistically likely positions.
Verify Triangulation
Compare the segment data of your shared matches inside our Chromosome Browser to isolate and verify a specific ancestral line.
Explore Trees Privately
Drag their downloaded family file into our offline GEDCOM Tree Viewer to scan branches side-by-side with your research logs.
🔗 Recommended Third-Party DNA Utilities
Advanced ToolsWhile our custom client-side tools handle the core day-to-day calculations, advanced genetic genealogy benefits from specialized external platforms. Here are the top free third-party utilities every serious researcher should use:
DNA Painter
An outstanding web application that lets you “paint” matching DNA segments onto an interactive chromosome map, reconstructing a visual chart of your paternal and maternal genome. Also hosts the legendary Shared cM Project.
GEDmatch
A free upload database that allows you to compare DNA segment data with matches who tested at other companies (Ancestry, 23andMe, MyHeritage, FTDNA). Offers admixture (ethnicity), chromosome comparison, and raw data phasing.
WATO (What Are the Odds?)
An advanced pedigree probability modeler hosted at DNA Painter. Input DNA match cM values into a mock tree to mathematically calculate the most likely position for an unknown parent, grandparent, or ancestor.
BanyanDNA
A next-generation modeling tool built for complex pedigrees where standard calculators fail. It utilizes advanced simulations to model double relationships, pedigree collapse, and endogamy across multiple generations.
The Leeds Method
A legendary, simple sorting concept that organizes your autosomal DNA matches into color-coded clusters representing your four biological grandparent branches. Best used on matches sharing between 90 cM and 400 cM.
AutoCluster Reporting
An automated clustering algorithm (natively integrated on MyHeritage and available via Genetic Affairs) that groups your cousin match lists into colorful visual grids, making grandparent branch identification effortless.
Unlike massive commercial corporate platforms that trap basic calculators behind expensive subscription paywalls, or sell pricing tiers to let you search a simple GEDCOM file, Genetic Voyage is dedicated to keeping these tools free, independent, and open to all. We do not run intrusive tracking scripts, sell your data to advertisers, or require premium upgrades. Our mission is to provide clean, fast, secure, and expert-level utilities that put you—the researcher—in complete control of your family history.
DNA Academy - Quick Answers
Which free genealogy tools does Genetic Voyage offer?
We offer a complete toolkit: 1) DNA Relationship Probability Calculator, 2) Leeds Method Clustering Tool, 3) Chromosome Browser, 4) GEDCOM Tree Viewer, and 5) Free Family Tree Templates. All tools are browser-based and require no payment or subscription.
Is the centimorgan calculator really free to use?
Absolutely. Our cM calculator is 100% free with unlimited uses. Just type in your centimorgan (cM) number, and we’ll generate the relationship probabilities instantly. No hidden limits, no premium tiers and we believe accurate DNA interpretation should be accessible to everyone.
Which DNA Academy tool should I start with as a beginner?
Start with the DNA Relationship Probability Calculator, it’s the easiest to use and gives you immediate value. Enter a cM number from your match list and see possible relationships. Once comfortable, move to the Leeds Method Clustering Tool to organize your matches into family groups.
Are these tools mobile-friendly?
Yes! Our entire toolkit is designed to work perfectly on smartphones and tablets. The chromosome browser, Leeds clustering tool, and cM calculator all adapt to smaller screens, so you can analyze your DNA matches while on the go. Whether you’re visiting an archive or meeting a newly found relative in person.