Free from The Teacher Tutors

The free calculator that gets students ready for test day

A graphing, scientific, and four-function calculator in one place, built to feel like the on-screen tools students use on the SAT, ACT, AP exams, and New Jersey state tests. Practice the moves that earn points, with a built-in coach that guides you toward the answer instead of handing it over.

Completely free. No account, no sign-in, and nothing to download.
Three calculators in one: basic, scientific, and graphing.
Guided lessons and a patient coach that build real skill, not shortcuts.

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100% free · Built by certified teachers · For the SAT, ACT, AP, and NJ state tests

A student practicing math with the free calculator at home

Which calculators are allowed on which exams?

Calculator rules change from test to test, and even from one section to the next. Here is where a calculator is allowed and the kind of tool students meet on screen, so they can practice with the matching calculator above.

Exam	Where a calculator is allowed	On test day	Practice with
Digital SAT & PSAT/NMSQT	The entire math section (not Reading and Writing).	A built-in Desmos-powered graphing calculator in the Bluebook app, or bring your own approved non-CAS calculator.	Graphing & scientific
ACT	The math test only.	The online ACT includes an on-screen graphing calculator. On paper, you bring an approved model.	Graphing & scientific
AP Precalculus, Calculus AB and BC, Statistics	A graphing calculator is required.	2026 digital AP exams include a built-in Desmos graphing calculator in Bluebook.	Graphing
AP Physics, Biology, Environmental Science	A four-function, scientific, or graphing calculator is allowed.	Built-in Desmos calculator in Bluebook, or bring an approved model.	Scientific & graphing
AP Chemistry	The free-response section only.	Built-in Desmos calculator on free-response, or bring an approved model.	Scientific
NJSLA, Start Strong & NJGPA (New Jersey)	Certain math sections, and it depends on the grade.	An on-screen Desmos calculator by grade: none in grades 3 to 5, four-function in grades 6 and 7, scientific in grade 8, and graphing in high school and on the NJGPA.	Basic, scientific & graphing
GRE & GMAT	GRE Quantitative and GMAT Data Insights only.	A basic on-screen calculator is provided, not a graphing tool.	Basic
GED & HiSET	The math test, after the first few questions.	An on-screen scientific calculator (the TI-30XS) is provided.	Basic & scientific

Free, and close to the real thing

This calculator is 100% free to use. It works like the calculators students see on these exams, but it is not the same tool. The official testing calculators turn off certain features, some tests ban advanced models with a computer algebra system, and the rules differ by test and section. Always practice with the exact calculator allowed on your exam, and confirm the current policy on your test's official website.

Common questions about the free calculator

The honest answers on the calculator students meet on test day, what this tool is, and how the coach works.

Are these the same calculators used on standardized tests?

They match the calculator configurations used on the exams, though each version is set up a little differently. College Board includes graphing and scientific calculator options in its Bluebook testing app, and students can switch between them at any point in the math section. New Jersey provides built-in calculators inside the state testing platform: four-function in grades 6 and 7, scientific in grade 8, and graphing on the high school end-of-course tests and the NJGPA. We link to a matching practice version on every page.

Can my child use this calculator during the actual test?

No, and it matters that you know why. On the SAT, ACT, and New Jersey state tests, students use the calculator built into the testing software. Phones, tablets, and laptops are prohibited. This page is for practice, so that the tool is already familiar when the real one appears.

Does it cost anything?

No. There is no login, no trial, and no card. We built it because students who know their calculator finish sooner and check more of their work, and because families tend to come back to the people who helped them for free first.

What does the AI coach do?

It watches what you type into the calculator and asks you questions about it. It will point out that your window is set wrong, or that you are in radians when the problem is in degrees, or that there is a ten-second way to do the thing you are doing the long way. It will not give you the answer. It genuinely cannot: the answer key is never sent to it.

Is my child chatting with an AI unsupervised?

The coach can only discuss the problem on screen. It has no memory between sessions, it does not ask for personal information, and every conversation is available to the tutor and the parent. If you would rather turn it off entirely, the calculators work perfectly well on their own.

Match it to what you are studying

Practice the calculator alongside the class or exam you are working toward, with a certified New Jersey tutor a click away.

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Learn the calculator with a Teacher Tutor

Our certified tutors teach the calculator skills that show up on the SAT, ACT, AP exams, and NJ state tests, from the fastest keystrokes to the graphing moves that save time under pressure. Every tutor is background-checked.

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Brenda L.

West Orange, NJ

Algebra, Algebra I, Algebra II, Elementary Math, English

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Sam M.

Montclair, NJ

ACT Math, Algebra, Algebra I, Algebra II, Biology

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Jenna C.

Hawthorne, NJ

ELA, Early Math (Pre-K), Earth Science, Elementary Math, Elementary Social Studies

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Independence and trademarks. The Teacher Tutors is an independent tutoring company. We are not affiliated with, endorsed by, or sponsored by Desmos Studio PBC, Amplify, the College Board, ACT, ETS, GMAC, the New Jersey Department of Education, Texas Instruments, or any other exam board or calculator maker. Our calculator is built independently by The Teacher Tutors. It is similar to, but not the same as, the Desmos calculators and other tools used on some standardized tests. "Desmos" is a trademark of Desmos Studio PBC. "SAT," "PSAT/NMSQT," and "AP" are trademarks of the College Board. "ACT" is a trademark of ACT Education Corp. These names are used only to describe the exams students take and do not imply any endorsement or affiliation. Calculator policies change, so always confirm the current rules with the official source for your exam.

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