Gmail app subject (iPhone)
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Gmail · iPhone · Subject line
Gmail app subject (iPhone) length checker (~37 characters)
About 37 characters show in the Gmail app on an iPhone 14. Modeled as a pixel box calibrated to the character count seen on the device, so wide and narrow letters are handled.
Gets cut
The Gmail app subject (iPhone) limit at a glance
- Limit
- about 37 characters (236px)
- How it’s counted
- By rendered width in Roboto at 14px — wide letters use more room.
- What happens when it’s too long
- Cut on screen with “…”
- Where the number comes from
- Measured on devices
How to write for it
- Under 35 characters is safe on almost every phone.
FAQ
Gmail app subject (iPhone): questions
What is the Gmail app subject (iPhone) limit?
About 37 characters (236px). About 37 characters show in the Gmail app on an iPhone 14. Modeled as a pixel box calibrated to the character count seen on the device, so wide and narrow letters are handled.
What happens if my subject line is too long?
Gmail · iPhone still shows it, but cuts it with “…” — anything past the cut is invisible to most people.
Why does the character count change?
This screen cuts by width, not characters. Wide letters like W and M use up to four times the room of i or l, so two texts of the same length can be cut in different places.
Can I check many at once?
Yes — upload a CSV or Excel file on the Bulk page and Truncly checks and fixes every row, then gives the file back with fixes added.