ACT Calculator Policy

  • ACT’s calculator policy is designed to ensure fairness for all examinees, avoid disturbances in the testing room, and protect the security of the test materials. Examinees found not following this policy may be dismissed and their tests voided for prohibited behavior.

    Examinees may use any 4-function, scientific, or graphing calculator, as long as it is not on the prohibited list and it is modified, if needed. Details are provided below. Calculators may only be used on the mathematics test, including ACT WorkKeys Applied Math. Sharing calculators during the test is not permitted.

    Accessible calculators such as audio/“talking” or Braille calculators may be allowed under ACT’s accessibility policies.

    Examinees are responsible for:

    • Bringing—and using—a permitted calculator.
    • Knowing whether their calculator is permitted (for the most current information on the calculator policy, visit or call 800.498.6481 for a recorded message containing highlights from this policy)
    • Making sure their calculator works properly and has new batteries, if battery-operated
    • Bringing a backup calculator and/or extra batteries, if they wish, in case their primary calculator fails

     Testing staff is responsible for:

    • Monitoring during the test to ensure examinees are using only permitted calculators
    • Dismissing any examinee found to be using a prohibited calculator during testing

     The following types of calculators are prohibited:

    • Calculators with built-in or downloaded computer algebra system functionality, including:


    Texas Instruments:




    All model numbers that begin with TI-89 or TI-92

    TI-Nspire CASNote: The TI-Nspire (non-CAS) is permitted.



    HP Prime

    HP 48GII

    All model numbers that begin with HP 40G, HP 49G, or HP 50G



    fx-CP400 (ClassPad 400)

    ClassPad 300 or ClassPad 330

    Algebra fx 2.0

    All model numbers that begin with CFX-9970G

ACT Official Policy

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