twineconvert

free · in-browser · no upload

GEDCOM to CSV
Converter

Drop your GEDCOM file. We'll convert it to CSV right here in your browser, your file never leaves your device.

or drop your file

Select your file here to get started

or drop your file here.

Accepts .ged, .gedcom

nothing uploaded no file size cap no signup

How it works

Three steps. No upload, no signup.

  1. 1

    Drop your file

    Click the dropzone above or drag a GEDCOM from your desktop. Files of any size, there's no upload, so there's no upload limit.

  2. 2

    Convert in your browser

    The conversion runs entirely in this tab using JavaScript and WebAssembly. Your file never touches our servers, we don't have any.

  3. 3

    Download

    Get your CSV the moment the conversion finishes. Convert another, or close the tab.

Files stay on your device

Your file is never uploaded. The entire conversion runs in your browser using WebAssembly. We can't see what you convert because we have no server to see it.

No file size limit

Server converters cap free users at 1-2 GB and gate larger files behind a paid plan. Since nothing uploads, our limit is whatever your browser can handle.

Free, no signup, no ads on conversions

No account required. No watermark on the output. No queue. Drop a file, get a converted file.

Why convert GEDCOM → CSV

What this conversion is actually for

GEDCOM is the universal family-tree interchange format (Ancestry, MyHeritage, FamilySearch, Gramps, RootsMagic all export it), but it's an unreadable nested-tag text format. CSV puts every person in a row, name, birth, death, place, so you can sort, filter, dedupe, and audit your tree in a spreadsheet, or share it with relatives who don't run genealogy software.

A real example

Your tree has 1,200 people across 6 generations. You suspect duplicate ancestors and missing birth years. Export GEDCOM from Ancestry, convert to CSV here, sort by surname + birth year in Sheets, duplicates and gaps jump out in minutes.

Troubleshooting

Some people are missing dates/places in the CSV.

GEDCOM only carries what was entered. Blank cells mean that fact isn't in the source file, not a conversion loss, confirm by opening the .ged in a text editor and checking the INDI record.

Family relationships (parents/children) aren't shown.

This export is one row per individual (the most-requested view). GEDCOM stores relationships in separate FAM records via @ references; flattening the full graph into one CSV is lossy. For relationship analysis keep working in genealogy software; use the CSV for per-person auditing.

Formats involved

About GEDCOM and CSV

GEDCOM, Genealogical Data Communication

GEDCOM is the universal interchange format for family-tree data. The current spec is GEDCOM 7.0 (2021) but most genealogy software still emits GEDCOM 5.5.1 (2019) for compatibility. Plain-text hierarchical records: 0-level lines define individuals (INDI) and families (FAM); deeper levels (1, 2, 3...) attach attributes like names, dates, and places. Every major genealogy app reads and writes GEDCOM.

How to open

Ancestry, MyHeritage, FamilySearch, RootsMagic, Family Tree Maker, Gramps, MacFamilyTree. Plain text in any editor.

Full GEDCOM format guide →
CSV, Comma-Separated Values

CSV is plain text, one row per line, fields separated by commas. The simplest possible tabular data format, which is exactly why it remains the most portable: every spreadsheet, database, programming language, and analytics tool reads CSV. Tradeoffs: no formulas, no formatting, no multiple sheets, and various edge cases around quoting fields that contain commas or newlines.

How to open

Excel, Google Sheets, Apple Numbers, LibreOffice Calc, any text editor, every database import wizard, every programming language with one line of code.

Full CSV format guide →

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FAQ

Common questions

Is this GEDCOM → CSV converter really free?

Yes. No signup, no watermark, no daily file count limit. Every conversion runs in your browser, your file never touches our servers because there are no servers.

Where does my file go when I convert it?

Nowhere. The conversion runs entirely in your browser using JavaScript and WebAssembly. Your file is never uploaded to our servers. We don't have any servers handling files, there's nothing for us to log, store, or accidentally leak.

What's the maximum file size?

Whatever your browser can hold in memory. Practically, this means a few hundred MB on most computers, significantly larger than the 1-2 GB caps that server-upload converters charge for. Very large files (multi-GB) may require closing other browser tabs first.

Why convert GEDCOM to CSV?

Family tree interchange between genealogy programs. Universal tabular data interchange. The most common reason to convert is compatibility, CSV works in places where GEDCOM doesn't, or vice versa.

How do I open a GEDCOM file in the first place?

Ancestry, MyHeritage, FamilySearch, RootsMagic, Family Tree Maker, Gramps, MacFamilyTree. Plain text in any editor.

Does this work offline?

Once the page is loaded, the conversion itself runs entirely offline. The first time you use a tool, your browser downloads the conversion library (a one-time cache). If you reload while offline, the page won't load, but you can install the site as a Progressive Web App for full offline use.

Can I convert multiple files at once?

Single file at a time for now. Batch conversion is on the roadmap, for now, drop one file, download the result, then convert the next.