One of the most frequently asked questions from HESI A2 test-takers is:
“Can you use a calculator on the HESI A2?”
The short answer is:
Yes.
For the Mathematics section of the HESI A2, a calculator is typically provided within the testing software. Students are generally not permitted to bring their own calculator into the testing center.
However, before you celebrate, there’s something important you need to understand.
Just because a calculator is available doesn’t mean the math section suddenly becomes easy.
Many students rely too heavily on the calculator and end up making avoidable mistakes.
The students who score highest on the HESI A2 Math section understand the concepts first and use the calculator as a tool—not a crutch.
Why So Many Students Worry About the Calculator
Math anxiety is real.
Many nursing school applicants haven’t taken a math class in years.
When they see topics like:
- Fractions
- Ratios
- Percentages
- Conversions
- Algebra
their first concern becomes:
“Will I have a calculator?”
The reality is that the calculator isn’t what determines your score.
Your understanding of the question does.
A calculator can help you perform calculations, but it cannot:
- Set up proportions
- Identify the correct formula
- Convert measurements properly
- Interpret word problems
That’s where preparation matters.
What Types of Math Questions Are on the HESI A2?
The HESI A2 Math section focuses on practical math skills that future nursing students need.
Common topics include:
Fractions
Questions may require you to:
- Add fractions
- Subtract fractions
- Multiply fractions
- Convert fractions to decimals
Example:
What is 3/4 + 1/2?
The calculator can help with arithmetic, but you still need to understand common denominators.
Percentages
You may see questions involving:
- Percentage increase
- Percentage decrease
- Finding a percentage of a number
Example:
What is 20% of 150?
Students who understand percentages solve these quickly.
Ratios and Proportions
This is one of the most heavily tested areas.
Example:
A medication requires 2 mg for every 5 kg of body weight. How much medication is needed for a patient weighing 25 kg?
The calculator can multiply and divide, but you must know how to set up the proportion.
Conversions
You should be comfortable with:
- Metric conversions
- Household measurements
- Weight conversions
- Volume conversions
Examples include:
- Liters to milliliters
- Kilograms to grams
- Ounces to pounds
These questions appear regularly.
Basic Algebra
Expect simple equations such as:
Solve for x:
2x + 8 = 20
These questions test logical thinking more than advanced mathematics.
The Biggest Calculator Mistake Students Make
Many students become dependent on the calculator during practice.
This creates two problems.
First, they stop developing number sense.
Second, they become slower.
Students who understand math concepts often recognize answers immediately without performing extensive calculations.
For example:
If a question asks for 50% of 80, you should instantly recognize the answer as 40.
Using a calculator for every simple calculation wastes valuable time.
Tip #1: Learn the Concepts Before Using the Calculator
Think of the calculator as a helper.
Not a teacher.
Focus on understanding:
- Fractions
- Ratios
- Proportions
- Conversions
Once you understand the setup, the calculator becomes useful.
Without understanding, even the best calculator won’t help.
This is why our HESI A2 Math Study Guide focuses heavily on step-by-step explanations rather than simply giving answers.
Tip #2: Master Common Nursing Math Conversions
Certain conversions appear repeatedly on nursing entrance exams.
Examples include:
- 1 kilogram = 1000 grams
- 1 liter = 1000 milliliters
- 1 pound = 16 ounces
Students who memorize these save significant time during the exam.
In our study materials, we emphasize the conversions students are most likely to encounter.
Tip #3: Practice Without a Calculator Sometimes
This may sound surprising.
But practicing some questions without a calculator helps strengthen:
- Mental math
- Estimation skills
- Confidence
If your calculator gives an answer that doesn’t make sense, strong estimation skills help you catch mistakes.
Tip #4: Focus on High-Yield Math Topics
Not all math topics are equally important.
Spend most of your study time on:
- Ratios
- Proportions
- Fractions
- Percentages
- Conversions
These areas appear repeatedly and often determine whether students achieve competitive scores.
Tip #5: Take Math Practice Tests Regularly
One of the fastest ways to improve is through practice.
At Olivia Grace Study Notes, we provide a free HESI A2 Math Practice Test that helps students:
- Identify weak areas
- Understand question patterns
- Build confidence
Many students discover they know more than they think after completing a full practice test.
What Score Should You Aim for in Math?
Requirements vary by school.
However, competitive nursing programs often expect scores above 80%.
Some programs may expect even higher.
Strong performance in math demonstrates:
- Problem-solving ability
- Attention to detail
- Readiness for nursing coursework
This is why math preparation should never be left until the last minute.
How Our HESI A2 Math Resources Help Students Succeed
At Olivia Grace Study Notes, we’ve designed our HESI A2 Math resources to focus on what actually matters.
Students have access to:
- HESI A2 Math Study Guide
- Detailed worked solutions
- High-yield topic reviews
- Realistic practice questions
- Free HESI Math Practice Test
For students preparing for multiple sections, our complete HESI A2 Study Bundle combines Math, Anatomy & Physiology, Vocabulary, Grammar, and other essential areas into one comprehensive resource.
Instead of piecing together random information from multiple sources, students can follow a structured study path.
Final Thoughts
So, can you use a calculator on the HESI A2?
Yes, in most testing environments a calculator is provided for the math section.
But remember:
The calculator isn’t what earns a high score.
Understanding the concepts does.
Focus on:
- Ratios and proportions
- Fractions and percentages
- Common nursing conversions
- Consistent practice
Combine that with high-quality study materials and regular practice tests, and you’ll be in a much stronger position on exam day.
