Yes, you can use a calculator on the HiSET, but only during the Mathematics section,and only the on-screen TI-30XS scientific calculator provided by the test system. You cannot bring your own calculator, even if it’s approved for other exams. The use a calculator on the HiSET is built into the testing software and available for all math questions except the first few in some test versions.
The use a calculator on the HiSET is identical to the physical TI-30XS model. It supports basic operations, square roots, exponents, fractions, and parentheses—enough for high school–level math problems. You’ll see it as a button on your screen during the 90-minute Mathematics test.
How the Calculator Works
You do not need the calculator for every question. Some problems are faster to solve mentally or by hand. Use the use a calculator on the HiSET for multi-step calculations, decimals, or square roots—but not for simple arithmetic like 5 × 6. Over-reliance can waste time.
The use a calculator on the HiSET is not available for any other section:
- Language Arts – Reading
- Language Arts – Writing
- Science
- Social Studies
These sections require only reading, writing, and reasoning skills.
Why This Matters
The HiSET tests your ability to apply math—not just push buttons. The calculator helps reduce computation errors, but you still need to understand how to set up problems correctly.
To prepare:
- Practice with the free TI-30XS simulator on hiset.ets.org
- Take timed practice tests using the online calculator
- Learn which functions you’ll need most: percentages, square roots, and order of operations
Knowing when and how to use a calculator on the HiSET is as important as knowing the math itself.
It’s a tool for accuracy—not a shortcut to understanding.
Master it, and you’ll save time and avoid avoidable mistakes.
Your success depends on using the right tool at the right time.