Every family fits on rows.

How a tree builds itself

Scroll, and the same engine that runs the editor adds a sample family one step at a time. You never drag a box into place.

The Linden family is a made-up sample.

Step 1 of 5
One person
Start with anyone: yourself, a grandparent, the person you know most about. They sit on row I.
1. I
Row I: Ada Linden.
Step 2 of 5
A partner
A partner joins the same row, side by side. A double line means married.
1. I
Added in this step: Tomas Linden on row I.
Step 3 of 5
Their children
Children go one row down and hang from the line between their parents. Row II opens.
1. I
2. II
Added in this step: Clara Haddad, Henrik Linden, Ines Linden on row II.
Step 4 of 5
Grandchildren
Partners marry in, and the next generation takes row III. Branches move apart so nothing overlaps.
1. I
2. II
3. III
Added in this step: Omar Haddad, Mei Tanaka on row II. Noor Haddad, Adam Haddad, Sami Linden on row III.
Step 5 of 5
Remarriage and adoption
Sami divorced, remarried and adopted Theo. A dashed line marks the divorce, a dotted line the adoption. Real families fit too.
1. I
2. II
3. III
4. IV
Added in this step: Hana Okafor, Elif Demir on row III. Lena Linden, Theo Linden on row IV.

1of 5

One person

Start with anyone: yourself, a grandparent, the person you know most about. They sit on row I.

1One person
2A partner
3Their children
4Grandchildren
5Remarriage and adoption

Rearrange by dragging

Pick up any card and drop it where it belongs. The rows re-flow around it.

Between siblings: Drop a card between brothers and sisters to change their order.
On a person: Drop it on someone and choose: child, partner or parent. Only moves that make sense are offered.
Undo: Every drop is one step. Ctrl+Z puts it back.

Demo: Ines is dragged to the start of her row, and her siblings move over.

Take your tree anywhere

One tree, many formats: a backup to keep, prints to hang and images to share.

{
  "format": "stam",
  "schemaVersion": 1,
  "tree": {
    "name": "The Linden family",
    "persons": {
      "ada": {
        "id": "ada",
        "firstName": "Ada",
        "lastName": "Linden",
        "gender": "female",
        "isLiving": false,
        "birth": {
          "date": {
            "year": 1921
          }
        },
        "death": {
          "date": {
            "year": 2009
          }
        }
      },
      … 13 more people
    },
    "unions": { … 5 unions }
  }
}

the-linden-family.stam.jsonAvailable now

How are we related?

Pick two people and get the answer in a sentence.

Lena is Noor’s first cousin once removed.

This demo only knows the sample family. In the app, the calculator works on your own tree.

Your family stays on your device.

No account: There is nothing to sign up for. Open it and start.
No server: Your tree is saved in this browser's own storage. It is never uploaded.
No cookies: No cookies, no analytics, no tracking scripts. Not on this page either.
Your backup: Download a backup file whenever you like and open it on another device.

Start your tree Read the privacy details

Every family fits on rows.

One person

A partner

Their children

Grandchildren

Remarriage and adoption

Rearrange by dragging

Take your tree anywhere

How are we related?

Your family stays on your device.