Can You Use a Calculator on the ACT? (2026 Digital Rules)
Yes, but only on the Math section. On the 2026 digital ACT you get a built-in on-screen Desmos graphing calculator, and you can still bring your own approved calculator as a backup. Calculators are not allowed on English, Reading, Science, or the Writing essay, and every Math question is designed to be solvable without one.
The short answer
- Math only. Calculators are permitted on the ACT Math section and nowhere else.
- Digital test: an on-screen Desmos graphing calculator is built into the testing platform.
- You may bring your own approved calculator to the test center, in any format, as a backup.
- You never need one. Every Math problem can be solved without a calculator; it is a time-saver, not a requirement.
Based on ACT's official calculator policy (act.org). Always confirm the current policy and your exact model before test day.
What the digital ACT gives you
Students taking the ACT online have a Desmos graphing calculator embedded in the Math section. It graphs functions, evaluates expressions, and handles the algebra and trig the test covers. Because it is on-screen, you do not have to bring anything to use it, but it is worth practicing with the free Desmos calculator beforehand so the layout is not new to you on test day.
Can you bring your own calculator?
Yes. Whether you test on paper or online, you may bring one approved calculator to the test center. Most students bring the calculator they already know, because familiarity beats features under time pressure. Permitted types include four-function, scientific, and most graphing calculators, though a few models are prohibited or must be modified first.
| Generally allowed | Restricted or prohibited |
|---|---|
| Four-function calculators | Anything with a built-in QWERTY (typewriter) keypad |
| Scientific calculators | Devices with wireless, Bluetooth, or internet access |
| Most graphing calculators | Phones, tablets, smartwatches, and laptops |
| Calculators with permitted programs | Models that make noise, print, or need a power cord |
Some advanced models are allowed only after you disable certain features. ACT maintains the exact list, so check your model against the official policy before you go.
Do you even need a calculator?
No. The ACT writes every Math question so it can be solved by hand, and many are faster without a calculator at all. Reaching for the calculator on a one-step arithmetic problem wastes the few seconds you have per question. Since there is no formula sheet on the ACT, your time is better spent memorizing key formulas than leaning on the calculator. With about 67 seconds per Math question, the calculator is for the heavy lifting (big arithmetic, graphing, systems), not for everything.
Calculator strategy for test day
- Use the one you know. Test day is not the time for a new calculator.
- Bring fresh batteries or a backup; no one will lend you one, since sharing is prohibited.
- Set up before you compute. Write the problem out on paper first, then calculate, so you do not punch numbers into the wrong setup.
- Backsolve when stuck. Because ACT Math is multiple choice, you can plug the answer choices back in, and the calculator makes that fast.
FAQ
Can you use a calculator on the entire ACT?
No. Calculators are allowed only on the ACT Math section. They are not permitted on English, Reading, Science, or the optional Writing essay.
Does the digital ACT have a built-in calculator?
Yes. Students taking the ACT online have an on-screen Desmos graphing calculator built into the Math section, and you may still bring your own approved calculator as a backup.
What calculators are not allowed on the ACT?
Phones, tablets, smartwatches, and laptops are banned, along with any calculator that has a QWERTY keypad, wireless or internet access, or that makes noise or prints. A few advanced models are allowed only after certain features are disabled, so check ACT's official policy for your model.
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