Interactive FX Edition

FX-300ES Style Scientific Calculator

A free online practice simulator modeled on the fx-300ES key layout, for high school algebra, geometry and trigonometry. Unofficial simulator, not affiliated with Casio.

ADVANCED SCIENTIFIC FX Math Engine

DEG ⚡ Solar Ready

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Natural Display

The option to input fractions in stacked form and output the result in mathematics textbook format.

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Trigonometry & Logarithms

The ability to calculate sine, cosine, tangent, logarithm of base 10, and natural logarithm (ln).

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Intelligent Editing & Review

Navigation in the line for convenient deletion and viewing previous calculations.

About the FX-300ES

The Casio fx-300ES is a popular scientific calculator for algebra, geometry and trigonometry classes. It is known for its natural textbook style display and its dedicated log keys. This calculator is based on its key layout, so students can practice the same keystrokes online before using the real calculator in a class or test. This tool is not made by Casio.

FX-300ES Function Usage Guides

Step-by-step buttons for computing math calculations.

Fractions

1. Natural Stacked Fractions

Perform normal fraction calculations with numerators and denominators.

Problem: 2/5 + 3/5

2 ➔ n/d ➔ 5 ➔ + ➔ 3 ➔ n/d ➔ 5 ➔ enter

Output: 1

Powers & Roots

2. Exponents (xⁿ) & Square Roots (√)

Perform high level calculations such as exponents and roots.

Problem: 3⁴ + √81

3 ➔ xⁿ ➔ 4 ➔ + ➔ √ ➔ 81 ➔ ) ➔ enter

Output: 90

Trigonometry

3. Sine, Cosine & Tangent

Execute sine, cosine and tangent functions using DEG.

Problem: sin(30°) + cos(60°)

sin ➔ 30 ➔ ) ➔ + ➔ cos ➔ 60 ➔ ) ➔ enter

Output: 1

Logarithms

4. Log (Base-10) & Natural Log (ln)

Solve problems related to growth and decay by applying log.

Problem: log(1000)

log ➔ 1000 ➔ ) ➔ enter

Output: 3

Frequently Asked Questions

Everything you need to know about operating the FX-300ES Simulator.

Q: How do I switch between DEG and RAD and vice versa?

Just hit the mode button on the keypad. The status bar at the top left corner of the LCD screen will show whether DEG or RAD is selected.

Q: What if there was an error in my equation?

If there is an error, you can simply move the cursor using the D-Pad with Left (◀) and Right (▶) arrow key buttons to the location where the error is and then click delete to erase and correct it.

Q: Can I use it as a calculator simulator for exam preparation?

Yes, for practice. It covers the functions students use most (fractions, powers, roots, trig, log and ln, and the S⇔D fraction/decimal key), but it doesn't include every menu of the physical calculator, such as statistics, so check your class materials too.

Q: Is there any cost to this web application?

There is absolutely no cost to it.

Q: What is different about the FX-300ES compared to TI calculators such as TI-34 and TI-30XS?

While the FX-300ES features Casio's Natural Display (VPAM) format instead of Texas Instruments' MultiView, most functions are the same, but button positions are not exactly alike; therefore, this calculator simulator comes in handy when students use both models.

Q: Is the FX-300ES calculator permitted at standardized tests?

Yes, it is allowed where regular scientific calculators are allowed, such as the SAT, ACT and class tests. But you still need to check with your school about it.

Q: Are there logarithms and natural logarithms calculable in this simulator?

Yes, the log key calculates base-10 logarithms while the ln key does natural logarithms; the examples of how to calculate them are provided in the Function Usage Guides above.

Q: Is it possible to see the fractions displayed in a natural format?

Yes, fractions written with the help of the n/d key are displayed in the natural textbook-like format, i.e., stacked, with the numerator over the denominator.

Q: Am I able to easily switch from degree to radian mode and vice versa?

Yes. Simply press the mode button to switch from DEG to RAD and vice versa; you will see an update in the indicator at the top left corner of your screen.

Q: Is there a premium version of the calculator simulator available?

No. Every calculator simulator on this website is completely free. There are no paid or premium versions.