TEAS cheat sheet: what to memorize, since ATI gives you no reference sheet
Written and reviewed by Brittany Scott, BSN, RN, CCM · 3 min read · Updated November 2026
Short answer
There is no TEAS cheat sheet or formula sheet on test day. ATI allows one blank sheet of paper or a dry-erase board, two writing instruments and the calculator built into the exam, and it bans notes and study materials. So a TEAS cheat sheet is a study tool: one page of formulas, conversions, grammar and science that you memorize.
What ATI gives you on test day, and what it does not
When we checked in November 2026, ATI's exam-day requirements listed one blank 8.5 by 11 inch sheet or a desktop dry-erase board, plus two writing instruments. Books, notes and any study material are prohibited, as are phones and smartwatches. The exam is 170 questions over 209 minutes, with one 10-minute break after the math section.
The calculator is on-screen only. ATI's help page lists addition, subtraction, multiplication and division keys plus percent, square root, decimal point, backspace and memory. Neither ATI page mentions a formula or conversion chart, so everything in the list below has to be in your head when you sit down.
Math formulas and conversions for the one-page sheet
Geometry: rectangle area = length x width, triangle area = 1/2 x base x height, circle area = pi x radius squared, circumference = 2 x pi x radius, and box volume = length x width x height. Percent: part = percent x whole, and percent change = (new - old) / old x 100. Ratios: set up a proportion and cross multiply.
Conversions: 1 inch = 2.54 cm, 1 foot = 12 inches, 1 yard = 3 feet, 1 mile = 5,280 feet, 1 lb = 16 oz, 1 kg = 2.2 lb, 1 cup = 8 fl oz, 2 cups = 1 pint, 2 pints = 1 quart, 4 quarts = 1 gallon, and 1 L = 1,000 mL. Metric prefixes run kilo, hecto, deka, base unit, deci, centi, milli, each step a factor of 10. Our TEAS formulas and conversions guides work examples of each.
Science: the facts that fit on a line
For anatomy and physiology, list each body system with its job and one key structure: respiratory and gas exchange in the alveoli, cardiovascular and transport by the heart, renal and filtration in the nephron, nervous and signaling by neurons, endocrine and hormones from the pituitary, digestive and absorption in the small intestine.
For biology and chemistry: organelles and their jobs (mitochondria make ATP, ribosomes make protein), the mitosis phases in order (prophase, metaphase, anaphase, telophase), dominant and recessive alleles in a Punnett square, protons, neutrons and electrons, the pH scale, and physical versus chemical change. For scientific reasoning, define independent variable, dependent variable, control group and hypothesis, since experiment questions use those terms.
English and reading: rules and question words
For English, write a line for each comma rule (after an introductory clause, before a conjunction joining two sentences, around nonessential information), semicolons joining two complete sentences, apostrophes for possession, and the difference between simple, compound and complex sentences. Spelling patterns such as doubling the final consonant before -ing earn a line too.
Reading has no facts to memorize, so use that space for the question vocabulary: main idea versus supporting detail, fact versus opinion, author's purpose (inform, persuade, entertain), and an inference versus an explicit statement. If you can define those four pairs on sight, the reading part of your sheet has done its job.
Sources
ATI: TEAS Exam Day Requirements and Expectations. One blank sheet or dry-erase board and two writing instruments; books, notes and study materials prohibited; 170 questions, 209 minutes, 10-minute break after math.
ATI: Do I need to bring a calculator to the TEAS Exam?. Built-in calculator only and its keys; personal, phone and watch calculators prohibited.
Common questions
Do you get a reference sheet on test day for the TEAS?
No. ATI's exam-day rules allow blank scratch paper or a dry-erase board, two writing instruments and the on-screen calculator. No formula sheet or conversion table is supplied, and notes or study materials are prohibited.
Is there an official TEAS cheat sheet PDF?
ATI does not publish one. Cheat sheet PDFs online come from third parties and vary in accuracy. Build your own from the formulas and facts above and check each one against your course textbook or ATI's own study materials.
Can I bring my own calculator to the TEAS?
No. Personal calculators, phone calculators and calculator watches are prohibited. The exam has a built-in calculator with the four basic operations plus percent, square root and memory keys.