Can You Use a Calculator on ACT?
Official Policy Checker & Math Pacing Calculator
Unsure if your specific device is allowed on test day? This tool determines if can you use a calculator on ACT based on the latest official guidelines. It also calculates your optimal math section pacing strategy to achieve your target score.
ACT Calculator Eligibility & Pacing Tool
Calculator Eligibility Status
ALLOWED
40 / 60
45
80 sec
Eligibility is determined by comparing your model against ACT Inc.’s prohibited list (CAS, QWERTY, etc.).
Pacing is calculated by: (60 minutes × 60 seconds) ÷ (Questions needed for Target Score + Buffer).
| Parameter | Your Input/Result | Standard ACT Baseline |
|---|---|---|
| Calculators Permitted | Allowed | Most 4-function, Scientific, Graphing |
| Time Limit | 60 Minutes | 60 Minutes |
| Avg. Time Per Question | 80 sec | 60 sec (if attempting all) |
Table of Contents
What is the “Can You Use a Calculator on ACT” Policy?
The question “can you use a calculator on ACT” is one of the most critical logistical queries for test-takers. The short answer is yes, but with strict limitations. The ACT allows calculators only on the Mathematics section. They are forbidden on the Science, Reading, and English sections.
However, not all calculators are created equal. The policy is designed to ensure fairness. While standard graphing calculators like the TI-84 are the gold standard, devices with Computer Algebra System (CAS) capabilities, like the TI-89 or TI-Nspire CAS, are strictly prohibited because they can solve algebraic equations automatically, giving students an unfair advantage.
Understanding can you use a calculator on ACT involves knowing both the permissible models and the prohibited features. Bringing a banned calculator can result in your device being confiscated or your score being voided. This tool helps you verify your device and plan your time effectively.
Calculator Policy & Pacing Formula
While the “allowance” of a calculator is a binary check (Allowed vs. Prohibited), maximizing its utility requires mathematical pacing. Many students fail to finish the ACT Math section because they try to solve every question at the same speed. The strategic answer to “can you use a calculator on ACT” is using it to optimize your time per question.
The Pacing Variables
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| $T_{total}$ | Total Time Available | Minutes | 60 Fixed |
| $S_{target}$ | Target Scaled Score | Points (1-36) | 20 – 36 |
| $Q_{raw}$ | Raw Score Needed | Questions | Depends on Curve |
| $Q_{attempt}$ | Questions to Attempt | Count | $Q_{raw} + 10\%$ buffer |
The formula for your “Adjusted Pacing” is:
Time Per Question = (60 mins × 60 sec) / Q_attempt
By attempting fewer questions but with higher accuracy, you significantly increase your time per question, reducing simple calculation errors.
Practical Examples (Real-World Use Cases)
Example 1: The High Achiever (TI-84 User)
Scenario: Sarah has a TI-84 Plus CE. She wants a perfect 36 on the Math section. She asks, “can you use a calculator on ACT to speed up graphing?”
- Input Model: TI-84 Plus (Allowed).
- Target Score: 36.
- Calculation: To get a 36, she typically needs 59 or 60 correct answers.
- Strategy: She must attempt all 60 questions.
- Output: 60 seconds per question. She uses her calculator for complex arithmetic but relies on mental math for simple steps to save time.
Example 2: The Strategic Pacer (Casio User)
Scenario: Mike struggles with speed. He aims for a 26 to get into his state university. He has a Casio fx-115ES.
- Input Model: Casio fx-115ES (Allowed).
- Target Score: 26.
- Calculation: A 26 usually requires a raw score of ~38-40.
- Strategy: Mike should focus on the first 45 questions and guess on the last 15.
- Output: He has 60 minutes for 45 questions = 80 seconds per question. This 33% extra time allows him to double-check work, drastically increasing his accuracy on the questions he does answer.
How to Use This Calculator
- Select Your Model: Choose your specific calculator from the dropdown list. If it’s not listed, choose “Standard” or “Other”.
- Check Prohibited Features: Look at your device. Does it have a QWERTY keyboard? Does it say “CAS”? Check the corresponding boxes.
- Set Your Goal: Enter your target math score (1-36). Be realistic based on your practice tests.
- Review Eligibility: The tool will instantly tell you “ALLOWED” or “PROHIBITED”.
- Analyze Pacing: Look at the “Time Per Question” result. Use this pace during your practice exams.
Key Factors That Affect Results
When considering can you use a calculator on ACT, several factors influence your success beyond just the device model.
- 1. Battery Life & Power: Calculators are allowed, but power cords are not. If your battery dies, you must continue without it. Always bring a backup (also checked for eligibility!).
- 2. Clearing Memory: Proctors may ask you to clear your memory. If you rely on stored programs (which are technically restricted if they have CAS functionality), you may lose them.
- 3. CAS Functionality: Computer Algebra Systems are the #1 reason for disqualification. They solve variable equations (e.g., “solve for x”). The ACT requires you to demonstrate this skill manually.
- 4. Familiarity: The best calculator is the one you know. A permitted TI-Nspire is powerful, but if you struggle to find the “Graph” button, a simple TI-30 might be faster.
- 5. The “Curve”: The raw-to-scale score conversion varies by test date. This calculator uses an average curve. A difficult test might allow more mistakes for the same score.
- 6. Guessing Strategy: There is no penalty for wrong answers on the ACT. Your pacing strategy should always include 1-2 minutes at the end to bubble in random answers for unattempted questions.
Frequently Asked Questions (FAQ)
Can you use a calculator on ACT Science section?
No. Calculators are strictly prohibited on the Science section. You must put it away after the Math section is finished.
Is the TI-89 allowed on the ACT?
No, the TI-89 is banned because it has a Computer Algebra System (CAS). Bringing one may lead to dismissal.
Can you use a calculator on ACT with a QWERTY keypad?
No. Calculators with a letter keypad (like a computer keyboard) are banned. However, calculators with letters used for variables (like the TI-84) are allowed as long as they aren’t in QWERTY format.
What happens if I bring a banned calculator?
If caught before the test, you won’t be allowed to use it. If caught during the test, your score will likely be voided. Always check “can you use a calculator on ACT” lists beforehand.
Can I use the calculator on my phone?
Absolutely not. All cell phones, smartwatches, and devices with communication capabilities are banned.
Do I really need a graphing calculator?
While not strictly required, a graphing calculator is highly recommended for functions and geometry visualization. It saves significant time.
Is the TI-Nspire allowed?
It depends. The TI-Nspire CX (non-CAS) is allowed. The TI-Nspire CX CAS is banned. Check the top right corner of the device for “CAS”.
Can I share a calculator with a friend during the test?
No. Sharing calculators or any materials is prohibited and will result in dismissal.
Related Tools and Internal Resources
Enhance your prep with our other dedicated tools:
- ACT Scoring Chart Calculator – Convert your raw scores to scaled scores for all sections.
- TI-84 Ultimate Guide for ACT – Learn the button shortcuts that save minutes.
- ACT Study Schedule Generator – Create a personalized 4-week prep plan.
- Test Day Checklist – What to bring (and what to leave home) besides your calculator.
- Essential ACT Math Formulas – The equations you must memorize since you can’t bring a cheat sheet.
- Best Calculators for the ACT Reviewed – Comparison of top models like TI-84 vs. TI-Nspire.