Calculators Allowed on the SAT: What You Can and Cannot Use

Can You Use a Calculator on the SAT?

Yes — calculators are permitted for all Math questions on the Digital SAT. The Digital SAT eliminated the no-calculator section that existed on the old paper SAT. Every question in both Math modules can be solved with a calculator if the student chooses. More importantly, the Digital SAT provides a built-in Desmos graphing calculator directly within the testing application for all Math questions — students do not need to bring a physical calculator to the test center if they prefer to use the built-in Desmos tool. This is a significant change from the old paper SAT, where students had to bring their own approved calculator.

Despite the built-in Desmos being available, many students still choose to bring a personal calculator they are familiar with. Using a familiar physical calculator can be faster for basic arithmetic operations than navigating the Desmos interface, and some students find physical buttons more comfortable than on-screen input. College Board permits students to use their own approved physical calculator alongside the built-in Desmos — you can switch between your physical calculator and the Desmos tool as needed during the test. For a full guide on when to use Desmos versus solving by hand, see desmos sat and sat calculator policy.

The SAT does not test calculus — no calculus content appears on the SAT. Students who are wondering whether to bring a graphing calculator specifically for calculus-related questions can set that concern aside. SAT Math covers Algebra, Advanced Math (quadratics, polynomials, exponentials, radicals), Problem Solving and Data Analysis, and Geometry/Trigonometry. A scientific calculator (like the TI-36X Pro) is sufficient for all SAT Math operations. A graphing calculator adds visual verification capabilities for quadratic functions and systems of equations, which can help on harder questions. For the complete list of formulas provided on test day and those you must memorize, see sat formula sheet.

Which Calculators Are Allowed on the SAT?

College Board permits the following types of calculators on the SAT:

Allowed calculator types:
Scientific calculators — for example: TI-30X, TI-36X Pro, Casio fx-115ES PLUS, Sharp EL-W516. Scientific calculators without CAS capability are universally allowed.

Graphing calculators (without CAS) — for example: TI-84 Plus, TI-84 Plus CE, TI-Nspire CX (non-CAS version), Casio fx-9750GIII. The TI-84 series is the most commonly used graphing calculator at SAT test centers.

Four-function calculators — basic addition/subtraction/multiplication/division calculators are allowed but are generally too limited to help with SAT Math. A scientific or graphing calculator is a better choice.

College Board maintains an official approved calculator list on their website. When in doubt about a specific model, check the College Board website before test day. Arriving at the test center with a non-approved calculator creates a problem that cannot be resolved on test day — use only the approved built-in Desmos or a verified-approved physical calculator.

The most widely used physical calculators at SAT test centers are the TI-84 Plus CE (graphing, CAS-free, widely available) and the TI-36X Pro (scientific, no graphing). The TI-84 Plus CE is the stronger choice for the SAT because it can graph functions, helping students visualize quadratic models and systems of equations that appear in Advanced Math. However, the built-in Desmos is equally capable of graphing and requires no physical device — so bringing a TI-84 adds value mainly for students who are very familiar with the TI-84's interface and can operate it faster than Desmos.

SAT Calculator Strategy: When to Use vs. When to Solve by Hand

Having a calculator available for all SAT Math questions does not mean using it for every question. Effective calculator strategy involves knowing which types of questions benefit from calculator use and which are faster to solve mentally or algebraically. Students who reflexively reach for the calculator for every problem often waste time on simple arithmetic that can be done in seconds mentally, while students who never use the calculator miss opportunities to verify hard answers or use graphing to visualize complex functions.

Questions where calculators provide clear value: multi-step arithmetic with large numbers (evaluating an exponential at a specific value like 2^10 or 3.7^3); graphing quadratic or polynomial functions to find vertex coordinates or zeros; solving systems of equations by graphing two functions and identifying the intersection; evaluating a function at multiple x-values quickly (using a table or substitution). Questions where mental math or algebra is faster: solving a simple linear equation (2x + 5 = 11); evaluating a simple expression (3^2 + 4^2); determining the sign of an answer (positive or negative); interpreting a graph that is already provided in the question.

The most common calculator overuse error on the SAT is solving simple expressions step by step on the calculator, entering each operation separately, which introduces the possibility of entry errors. A student who computes (15 - 3) x 4 on the calculator risks a wrong result if a button is pressed incorrectly; doing it mentally eliminates this risk. The calculator is most valuable as a verification tool — solve a hard problem algebraically first, then verify the numerical answer in the calculator. This hybrid approach (algebra for reasoning, calculator for verification) is more reliable than relying on the calculator for the primary solution on hard problems. For developing integrated calculator + algebra skills, take multiple timed full-length practice sections from our sat test library and deliberately practice which calculator tool you use for each question type. For how to use Desmos specifically on the hardest SAT Math questions, see desmos sat. For how to improve overall SAT math performance, see how to improve sat score.

The Built-In Desmos Calculator on the SAT

The Digital SAT's built-in Desmos graphing calculator is a full-featured graphing tool available for every Math question. Students can access it by clicking the calculator icon in the testing interface. The Desmos calculator on the SAT includes graphing functions, evaluating functions at specific values, finding intersections of multiple graphs, creating tables, using sliders, and performing standard arithmetic. It is the same Desmos tool available free at desmos.com, and students who practice with Desmos before the test are fully prepared to use the SAT version.

The key advantages of the built-in Desmos over a physical TI-84 for SAT Math are: (1) visual function graphing is more intuitive in Desmos (type a function and it graphs immediately without mode navigation); (2) finding quadratic vertex and intersections is fast (the clickable minimum/maximum feature); (3) graphing two equations simultaneously to solve a system of equations is seamless. For students who are not already highly proficient with their physical calculator, learning to use Desmos efficiently for these specific SAT Math tasks is the highest-return calculator preparation investment.

Students who decide to use only the built-in Desmos and not bring a physical calculator do not need to worry about forgetting their calculator or battery failures — the built-in tool is always available as part of the testing software. Students who bring a physical calculator as backup should bring a fresh battery set anyway, since a dead calculator on test day creates unnecessary stress. For a complete strategy guide on integrating Desmos use with the SAT Math approach, see desmos sat. For how calculator use fits into overall preparation, see how to improve sat score. For free full-length practice tests where you can practice calculator strategy, see our sat test library.