Medical school application character limits: AMCAS, AACOMAS and TMDSAS personal statements and activity entries

The limits, from the three application services

AMCAS and AACOMAS cap the personal statement at 5,300 characters and TMDSAS at 5,000, all with spaces counted; the activity entries are far shorter, from 300 to 1,325 characters. The figures below were read on 4 November 2026 in the 2027 AMCAS Applicant Guide, the AACOMAS Applicant Help Center and the TMDSAS Application Guide for entry year 2027.

The words column divides the characters by 5.6, the average characters a word with its space that this site measured across 598,848 words of English prose, with the range 5.25 to 5.95 that held 34 of the 36 texts measured (characters in a word). The services themselves give no word figures, apart from AMCAS's "or about one page" for the essay.

The sources: the 2027 AMCAS Applicant Guide (PDF, modified 30 August 2026), the AAMC's page on AMCAS Work and Activities, the AACOMAS help center's Personal Statement page, and TMDSAS's Essays and Activities pages.

How many words is 5,300 characters?

About 950 words of ordinary prose, and usually 890 to 1,010; the "roughly 757 words" some guides give assumes 7 characters a word. 5,300 ÷ 7 = 757, the divisor GradPilot's guide (updated 2 August 2026) states. Across the 36 English texts this site measured, from Jane Austen to its own guides, the average was 5.57 characters a word with the space after it, and no prose text reached 7; the highest, a programming guide full of code, was 6.64.

The figure that decides your essay is your own. Medical and scientific words such as "phlebotomy" or "interdisciplinary" are long, and an essay full of them sits higher than 5.6. The check takes a minute:

1. Paste the draft into the character counter and note the characters with spaces, say 5,180.
2. Paste it into the word counter and note the words, say 880.
3. Divide: 5,180 ÷ 880 = 5.89 characters a word.
4. The room left: (5,300 − 5,180) ÷ 5.89 = about 20 more words before AMCAS's limit.

The practical risk runs the other way from what the 757 figure suggests. Someone who stops at 750 words of typical prose has used about 4,200 characters and left about 1,100, a fifth of the space, unused. Someone who writes to a word count first and then converts usually has to cut.

What counts as a character

Every letter, digit, punctuation mark and space counts in all three applications, and AACOMAS also counts each carriage return. AMCAS writes "(including spaces)" after every limit in its applicant guide. TMDSAS's essay page says "Remember that the character count includes spaces." The AACOMAS help center is the most specific: "Characters include spaces, carriage returns, and punctuation."

Paragraph breaks therefore cost characters in AACOMAS. Its help center asks you "To delineate paragraphs, type a double return between each paragraph", so an essay of six paragraphs spends 5 breaks × 2 = 10 characters on them. AMCAS and TMDSAS do not say how they count a return, so allow the same.

Formatting is removed, and some characters may not survive

All three systems strip formatting. AMCAS says medical schools "receive all text-entry responses as plain text", so bullets, bold and italic do not appear, and asks applicants to "Use English (United States) characters; other characters may not be accurately recognized." AACOMAS says "Formatting such as tabs, italics, multiple spaces, etc., will not be saved." TMDSAS advises typing the essay directly into the application "rather than copying and pasting" to avoid formatting problems.

For a pasted draft, that means checking three things after pasting: paragraph breaks, curly quotation marks and apostrophes from a word processor, and any dash or accented letter. A counter that shows the characters as a web form counts them helps here; the character counter's seven ways of counting explains why a curly apostrophe or an emoji can count differently from a plain one.

What happens at the limit

The services behave differently when you go over. AMCAS says "You will receive an error message if you exceed the character limit." AACOMAS says "You cannot save your essay if it exceeds the 5,300 character limit." TMDSAS does not describe it. None of the three lets you edit an essay after submission: AMCAS says no changes, "including corrections to grammatical or typographical errors", and TMDSAS that essays "CANNOT be changed after submitting under any circumstances".

AMCAS: the personal comments essay and Work and Activities

AMCAS gives one 5,300-character essay to every MD school, and a Work and Activities section that can hold nearly three times as many characters. The personal comments essay is "about one page" by AMCAS's own description, and the essay "will be sent to all the medical schools you apply to".

The Work and Activities section allows "a maximum of 15 experiences and four separate date ranges for recurring experiences", each described "in 700 characters (including spaces) or fewer". Up to three can be marked most meaningful, which "will allow you an additional 1,325 characters (including spaces) to explain why the experience(s) was particularly meaningful to you".

The 1,325-character fields are also used for explanations: previous matriculation at a medical school, a discharge from the armed forces other than honourable, and a felony or misdemeanour conviction each come with 1,325 characters including spaces, according to the same guide. The AAMC suggests drafting experience descriptions in a plain-text editor such as Notepad or TextEdit before pasting, because formatted text "may result in formatting problems that cannot be edited once your application is submitted".

AACOMAS: the DO personal statement

AACOMAS, the application for osteopathic (DO) schools, allows a 5,300-character personal statement counting spaces, carriage returns and punctuation, and will not save an essay over that. Its help center shows the word and character count under the box as you type, and the statement is "shared with all your osteopathic medicine schools".

The help center's experiences page asks for "a description/key responsibilities and the time commitments" for each experience but, when read on 4 November 2026, gave no character limit for it. The box in the application shows its own limit; count to that.

A personal statement that fits AMCAS fits AACOMAS by number, since both are 5,300, but the paragraph breaks are the catch. If the count you made for AMCAS left out line breaks, an essay at exactly 5,300 there is over in AACOMAS: six paragraphs separated by double returns add 10 characters.

TMDSAS: three essays and short activity entries

TMDSAS, the application service for Texas medical, dental, veterinary and podiatry schools, asks for a 5,000-character personal statement, a 2,500-character Personal Characteristics essay and an optional 2,500-character essay, spaces counted in all three. The Personal Characteristics prompt, new for entry year 2027, asks applicants to "Describe your personal qualities, characteristics, skills, or strengths" and how they will benefit others. The Optional Essay asks applicants to "Briefly discuss any circumstances or experiences that are relevant to your application".

TMDSAS activity entries are shorter than AMCAS's. Its Activities page sets 300 characters for academic recognition, non-academic recognition and employment, and 500 for leadership, research, healthcare activities, community engagement, extracurricular activities and planned activities. Up to three top meaningful activities get "500 character limit, each entry", and "There is no limit to the amount of activities you can enter in your application."

Cutting an AMCAS essay to the TMDSAS limit

A full-length AMCAS essay is 300 characters too long for TMDSAS. At 5.6 characters a word that is about 54 words, between 50 and 57 for most prose.

1. Start: AMCAS essay at 5,290 characters with spaces.
2. Target: 5,000, less a 20-character margin for counters that differ = 4,980.
3. Cut: 5,290 − 4,980 = 310 characters, about 55 words at 5.6 characters a word.

That is a sentence or two, often the ones that restate the opening or list experiences already in the activities section. The TMDSAS prompt also asks how your experiences prepare you to be a physician, so check the cut leaves that part of the answer standing.

What this guide covers

This guide gives the character limits published by the AAMC for AMCAS, by Liaison for AACOMAS and by TMDSAS for the 2027 application cycle (entry in 2027), as read on 4 November 2026. Limits and prompts change between cycles; the box in the application you are filling in has the last word, and a school's secondary essays set their own limits. It does not cover CASPA, OMSAS in Canada, UCAS medicine applications in the UK, or residency applications.

Simple Online Counter is a free, browser-based set of counters. Its character counter counts every letter, space and line break as one character, the way all three applications count, and does it in your browser without sending the text anywhere.