MCAT Calculator Policy Checker (2020 Rules)

This tool clarifies the official rules regarding calculator usage on the MCAT exam.

What is the “can you use a calculator on the mcat 2020” Policy?

The question of “can you use a calculator on the MCAT 2020” is a critical one for test-takers, and the answer is straightforward and unambiguous: **No, you cannot use a calculator on the MCAT.** This policy, enforced by the Association of American Medical Colleges (AAMC), was firmly in place for the 2020 testing year and remains so. This rule applies to all sections of the exam, including the seemingly math-heavy “Chemical and Physical Foundations of Biological Systems” section.

The AAMC’s decision to prohibit calculators is intentional. The MCAT is designed not just to test your scientific knowledge, but also your critical thinking, problem-solving, and reasoning skills. By requiring manual calculation, the exam assesses your ability to handle numerical data, make reasonable estimations, and apply mathematical concepts efficiently—skills that are deemed essential for future physicians. Instead of a calculator, you are provided with a noteboard and a fine-point marker for your calculations.

The MCAT Math ‘Formula’: Why No Calculators Are Allowed

The “formula” behind the no-calculator rule isn’t a mathematical one, but a pedagogical one. It’s based on the principle that a future doctor’s analytical skills are more important than their ability to operate a device. The MCAT is fundamentally a reasoning test, not a math test. The problems are designed to be solved without a calculator.

The underlying variables in this policy can be understood with the following table:

Factors Influencing the AAMC’s No-Calculator Policy

Variable	Meaning	Unit	Typical Range
Test Fairness	Ensuring a level playing field where no one gains an advantage from a specific device.	Qualitative	High Priority
Reasoning Assessment	Emphasis on evaluating logical problem-solving over pure computation.	Qualitative	High Priority
Conceptual Understanding	Testing the depth of a student’s grasp of scientific principles, which includes the math behind them.	Qualitative	High Priority
Mental Math Proficiency	Assessing the ability to perform quick estimations and calculations, a skill used in clinical settings.	Speed & Accuracy	Moderate to High

For more on MCAT math, see our MCAT Prep Course.

Practical Examples

Since you can’t use a calculator, the math is designed to be manageable. Here are two examples of how you might approach a problem.

Example 1: pH Calculation

Question: What is the pH of a solution with a hydronium ion concentration of 3.0 x 10⁻⁵ M? (log₃(3) ≈ 0.48)

• Inputs: [H₃O⁺] = 3.0 x 10⁻⁵ M
• Formula: pH = -log[H₃O⁺] = -log(3.0 x 10⁻⁵)
• Mental Calculation: This becomes – (log(3) + log(10⁻⁵)) = – (log(3) – 5) = 5 – log(3). Since log(3) is approximately 0.48, the pH is about 5 – 0.48 = 4.52.
• Result: The pH is approximately 4.52.

Example 2: Kinematics

Question: A ball is thrown upwards with an initial velocity of 19.6 m/s. How long does it take to reach its highest point? (Assume g ≈ 9.8 m/s²)

• Inputs: v₀ = 19.6 m/s, v_f = 0 m/s, a = -9.8 m/s²
• Formula: v_f = v₀ + at => t = (v_f – v₀) / a
• Mental Calculation: Notice that 19.6 is exactly 2 times 9.8. So, t = (0 – 19.6) / -9.8 = 19.6 / 9.8 = 2.
• Result: It takes 2 seconds. The numbers are often chosen to simplify cleanly.

Learn more strategies in our guide to MCAT Study Schedules.

How to Use This can you use a calculator on the mcat 2020 Calculator

Our policy checker is designed for simplicity and clarity.

1. Select the Section: Choose the section of the MCAT you are curious about from the dropdown menu.
2. Check the Policy: The result will instantly display, confirming the calculator policy for that section. Since the rule is universal, the result will always be “NOT PERMITTED.”
3. Review the Implications: The “intermediate values” provide context, explaining the official AAMC stance and what skills are required instead.
4. Copy the Results: Use the “Copy Results” button to save a summary of the policy for your notes.

Key Factors That Affect MCAT Math Performance

Success with MCAT math without a calculator depends on several key factors. Mastering these will be more beneficial than wishing for a calculator.

• Scientific Notation: Fluency in manipulating numbers in scientific notation is non-negotiable.
• Logarithms: Have a strong conceptual understanding of logs, especially for pH calculations. Approximating log values is a key skill.
• Estimation & Rounding: You must be comfortable with rounding numbers to simplify calculations. The answer choices are usually far enough apart to allow for this.
• Fractions and Ratios: Thinking in terms of fractions can often be faster and easier than working with decimals.
• Dimensional Analysis: Using units to guide your problem-solving is crucial. If your units don’t cancel out correctly, you know you’ve made a mistake. Our MCAT Flashcards can help you practice.
• Arithmetic Speed: Simple multiplication and division must be second nature. Practice will improve both your speed and accuracy.

Frequently Asked Questions (FAQ)

1. Was a calculator ever allowed on the MCAT?
No, the computer-based MCAT has never allowed calculators. The policy has been consistent for many years.

2. Does the “no calculator” rule apply to the online MCAT as well?
Yes, the rule is the same for all versions of the MCAT, whether taken at a test center or in any other format.

3. Can I use the computer’s built-in calculator?
No. The testing software locks down the computer, and you will not have access to any other applications, including a calculator.

4. What kind of math is on the MCAT?
The math is primarily arithmetic, algebra, and trigonometry. It also includes interpretation of graphs and data. There is no calculus on the MCAT.

5. How can I get better at MCAT math without a calculator?
Practice is key. Work through practice problems specifically without a calculator. Focus on learning to estimate and handle scientific notation quickly. Utilize resources like our MCAT Practice Questions.

6. What do I get for scratch work?
The AAMC provides a noteboard or booklet and a fine-point marker for you to do all your scratch work.

7. Why is this policy in place?
The policy emphasizes reasoning and analytical skills over computational ability, reflecting the problem-solving demands placed on physicians.

8. Does this policy apply to years other than 2020?
Yes, the “no calculator” rule is a long-standing policy that applies to all recent and upcoming MCAT administrations, not just 2020.

Continue your MCAT preparation with our other expert-designed tools and guides.

• MCAT Diagnostic Test: Assess your current strengths and weaknesses across all sections.
• Medical School Admissions Consulting: Get expert help with your entire application process.