Free GRE tool · ETS-exact simulator · Updated 2026

The official GRE calculator,
practice it before test day

A free, interactive simulator of the on-screen calculator you'll use during the GRE Quantitative Reasoning section. Built directly from the official ETS guidelines: PEMDAS order of operations, 8-digit display, memory functions, and the Transfer Display button. Practice with the same calculator you'll see on test day.

PEMDAS order of operations
8-digit limit with ERROR
Memory + Transfer Display
Full keyboard support
Start practicing ↓ How it works
100% ETS behavior
match
8 Digit display
limit (real)
23 Buttons,
same as ETS
15+ Years prep
experience
Free interactive simulator

Try it now

Click buttons or use your keyboard. The calculator follows PEMDAS order of operations, exactly like the real GRE on test day. Try the canonical example: 1 + 2 × 4 = 9 (multiplication happens first).

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Why this calculator

Built directly from
the official ETS guidelines

Every behavior on this calculator was verified against the official ETS document for the GRE on-screen calculator: PEMDAS order of operations, 8-digit display, ERROR handling, memory functions, and the Transfer Display button. Practice here builds the right instincts for test day.

The order-of-operations trap

The single biggest GRE calculator mistake students make

The GRE calculator follows PEMDAS, which means multiplication and division happen before addition and subtraction, regardless of the order you type them. The most common student mistake is typing a fraction or expression left-to-right, expecting the calculator to compute it that way, and getting a wildly wrong answer because PEMDAS overrode the intent. Watch what happens when you forget parentheses on a fraction:

Without parentheses8.4 + 9.3 ÷ 70 = 8.5328571   (computes 9.3 ÷ 70 first, then adds 8.4)
With parentheses(8.4 + 9.3) ÷ 70 = 0.2528571   (correct, computes the fraction)

The fix: any time you mean "the whole top divided by the bottom," wrap the top in parentheses. Or compute the numerator first, press equals, then divide. This is the single most common calculator-related error on GRE Quant. Practice it here until parens become muscle memory.

Want to go deeper?

Read the complete
GRE calculator guide

A full breakdown of every button, every quirk, when to use the calculator on test day, and when mental math is faster. Includes worked examples from the official ETS document and a complete FAQ.

Read the GRE calculator guide

In the guide:

  • Every button explained, with worked examples
  • The PEMDAS rule, with ETS's own examples verbatim
  • When to use the calculator and when to skip it
  • How memory functions work (M+, MR, MC)
  • The Transfer Display button trick
  • 9 detailed FAQs covering every common question
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Quick FAQ

A few things people
always ask

Yes. This simulator was built directly from the official ETS guidelines document and verified against every example ETS provides. It follows PEMDAS order of operations, enforces the 8-digit display limit with an ERROR message on overflow, supports nested parentheses, includes the same memory functions (M+, MR, MC), the same square root and sign change buttons, and the same Transfer Display button for Numeric Entry questions.
Yes. Per the official ETS document, the GRE on-screen calculator follows standard order of operations: parentheses, then exponents/square roots, then multiplications and divisions left to right, then additions and subtractions left to right. The classic example: 1 + 2 × 4 = 9 (not 12). For the full breakdown, see the complete GRE calculator guide.
Yes, completely free with no signup, no email required, and no usage limits. Built and maintained by Epic Exam Prep, a Barcelona-based test prep company since 2010.
Yes. Use number keys for digits, +, −, *, / for the four operations, Enter or = for equals, Escape for clear all, Backspace for clear entry, ( and ) for parentheses, and 's' for square root. The actual ETS GRE calculator at most test centers also supports keyboard input.

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