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.
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).
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. Understanding how GRE section adaptive scoring works helps you see why calculator fluency matters for both Quant modules. Practice here builds the right instincts for test day.
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:
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. For a complete list of formulas you need to know, see the GRE Quant Formula Sheet. Practice it here until parens become muscle memory.
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. Once you know the calculator, use our GRE Score Calculator to convert your raw scores to scaled 130-170 scores.
Read the GRE calculator guideCalculator practice is one piece. The bigger lift on the Quant section is knowing when to use it, when to skip it, and when the right move is mental math. Epic Exam Prep teachers have been raising GRE scores in Barcelona since 2010, working with applicants targeting top European and US graduate programs. Live, online, one-on-one instruction with experienced teachers who know every section cold.
Free GRE Resource · Built by Test Prep Experts
The PrepDrills GRE Quant Formula Sheet 2026 covers every formula tested on the GRE Quantitative Reasoning section: fractions, algebra, exponent rules, geometry, statistics, probability, and the 7 Quantitative Comparison traps that cost students the most points. Verified against official ETS materials. Free to download.
Download the Formula Sheet (Free PDF) →Want a one-to-one GRE teacher? Epic Exam Prep has prepared students for the GRE since 2010, with 15+ years of expertise across Barcelona, Madrid, Milan, Zurich, and online worldwide.
Built by the same team. Same standards. Always free, always verified against official ETS materials.
Section-adaptive aware. Convert raw scores to 130–170 scaled. See your percentile and fit for LBS, INSEAD, Stanford, MIT, Harvard.
Calculate my score200+ formulas across every GRE Quant topic. 8 pages. QC strategy + 7 traps. Verified against official ETS materials.
Get the free PDFEvery button explained. The PEMDAS trap. When to use the calculator and when mental math is faster. Complete FAQ.
Read the guide