Rows grow to fit the tallest cell font
Enlarging a cell's font grows its row to fit; reducing it (or clearing the cell) shrinks the row back.
What it does
Rows size themselves to their content. Type into a cell and make its font bigger — with the [−] size [+] stepper or Ctrl+Shift+Period — and the whole row grows so the larger text fits instead of overflowing into its neighbours. Shrink the font (or clear the cell) and the row shrinks back. The row always fits its tallest cell, so a big font in column A grows the entire row across every column.
Only cells that actually hold content drive the height: a cell formatted large but left empty leaves its row at the default height — matching Google Sheets.
Verified behavior
Matches Google Sheets: In Google Sheets every row auto-fits its content: a row's height is the height of its tallest cell, so increasing a cell's font size grows the whole row to fit the larger text and reducing it (or clearing the cell) shrinks the row back. Only NON-EMPTY cells count — a cell that carries a large font but no content does not grow its row. The tallest cell in the row wins (a big font in column A grows the entire row across every column). Row height is a layout consequence of the per-cell font-size presentation attribute; it never changes the cell's value or formula and undoes/redoes with the edit that caused it. Studio floors row height at its 24px default (Sheets' default is ~21px) so unrelated rows never reflow, and models the grown height with a line-box formula rather than pixel-matching Sheets' proprietary canvas metrics.
Enlarging a cell's font records the size that grows its row
Given
- A1 =
Big
When I click A1, then press Control+Shift+Period
Then
- A1 is fontSize=11
Reducing the font records the size that shrinks the row back
Given
- A1 =
Big
When I click A1, then press Control+Shift+Comma
Then
- A1 is fontSize=9
Row auto-fit is presentation — it never touches the value
Given
- A1 =
=6*7
When I click A1, then press Control+Shift+Period
Then
- A1 shows
42 - A1 has formula
=6*7 - A1 is fontSize=11
Align cells and wrap text
Horizontal (left/center/right) and vertical (top/middle/bottom) alignment plus text wrap are per-cell format attributes; the toolbar sets them (Ctrl+Shift+L/E/R for horizontal), an explicit alignment overrides the type-based default, and a wrapped cell grows its row to fit its lines.
Enter mode vs edit mode
Typing seeds a fresh value and arrows commit + move; F2 / Enter / double-click open the cell for editing so arrows move the caret; in a formula an arrow only steers a reference when the caret sits at a reference-valid position — so editing a formula never corrupts it.