United States — ACT Inc.

ACT Math Calculator

Free online calculators for ACT Math preparation. Practice pre-algebra, algebra, geometry, coordinate geometry, and trigonometry with step-by-step solutions.

Ages 16-18 · 7 times per year (February, April, June, July, September, October, December)

Calculator Allowed

Calculators are permitted on the entire ACT Math section (60 questions, 60 minutes). You may use any four-function, scientific, or graphing calculator.

Calculators are allowed for all 60 questions in the ACT Math section.
Four-function, scientific, and graphing calculators are all permitted.
Prohibited: calculators with CAS (Computer Algebra System), calculators with internet or Bluetooth connectivity, phone or tablet calculators, and calculators that make noise or have a power cord.
Prohibited models include the TI-89, TI-92, TI-Nspire CAS, HP 48GII, HP 50g, Casio ClassPad, and Casio Algebra FX series.
Recommended models: TI-84 Plus CE, TI-36X Pro, Casio fx-991EX.
You may not share a calculator with another test-taker during the exam.

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Worked Examples

Pre-Algebra: Ratios

standard

A recipe calls for 3 cups of flour for every 2 cups of sugar. If you use 9 cups of flour, how many cups of sugar do you need?

Elementary Algebra: Solving Equations

standard

If 5(x - 3) = 2x + 6, what is the value of x?

Plane Geometry: Triangle Area

standard

A triangle has a base of 12 cm and a height of 9 cm. What is its area?

Coordinate Geometry: Slope Between Two Points

advanced

What is the slope of the line passing through (-3, 4) and (5, -2)?

Trigonometry: Finding a Side Length

advanced

In a right triangle, the hypotenuse is 10 and one angle is 30 degrees. What is the length of the side opposite the 30-degree angle?

ACT Math FAQ

Is a calculator allowed on the ACT?▾

Yes. You may use a calculator on the entire ACT Math section. All 60 questions allow calculator use. Four-function, scientific, and graphing calculators are all permitted.

Which calculators are banned on the ACT?▾

Calculators with CAS (Computer Algebra System) capabilities are prohibited. This includes the TI-89, TI-92, TI-Nspire CAS, HP 48GII, HP 50g, Casio ClassPad, and Casio Algebra FX series. Phone and tablet calculators are also not allowed.

What is the best calculator for the ACT?▾

The TI-84 Plus CE is the most popular choice because it handles graphing, statistics, and algebra without CAS. The TI-36X Pro is an excellent scientific calculator alternative, and the Casio fx-991EX is another strong option.

What math topics are covered on the ACT?▾

The ACT Math section covers pre-algebra (20-25%), elementary algebra (15-20%), intermediate algebra (15-20%), coordinate geometry (15-20%), plane geometry (20-25%), and trigonometry (5-10%).

How long is the ACT Math section?▾

The ACT Math section gives you 60 minutes to answer 60 questions. That is one minute per question on average. Unlike the SAT, there is no adaptive testing or separate modules.

How is the ACT Math section different from the SAT?▾

The ACT includes trigonometry and more geometry than the SAT. The entire ACT Math section allows calculators, while the SAT uses an adaptive format with a built-in Desmos calculator. The ACT has 60 questions in 60 minutes; the SAT has 44 questions in 70 minutes across two modules.

Other Exam Modes

GCSE Maths

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A-Level Maths

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SAT Math

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AP Calculus

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IB Maths

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JEE Maths

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