Casio fx-260 SOLAR II Scientific Calculator

Product Overview

The Casio fx-260 SOLAR II is a compact, non-programmable scientific calculator designed for mathematics, science, statistics, and general numerical calculations. It provides 144 built-in functions covering arithmetic, fractions, powers, roots, logarithms, trigonometry, coordinate conversions, permutations, combinations, and other common scientific operations. The calculator uses Casio’s solar power system and does not depend on a replaceable battery for normal operation.

The calculator uses an LCD display with a 10+2-digit capacity and provides independent memory functions for storing intermediate values. Its operating modes support standard calculations, statistical work, and different angular units used in trigonometry. Fixed-decimal, scientific-notation, and normal display formats are also available.

The fx-260 SOLAR II is non-graphing and does not support user programming, symbolic algebra, or computer connectivity. Its physical design is intended for handheld use and includes plastic keys and a protective hard case. The model is commonly associated with mathematics education because its function set covers material encountered in general mathematics, algebra, geometry-related calculations, trigonometry, statistics, and introductory science courses.

Product Information

Identification

Physical

Product Identifier Summary

• Model Number: The model designation identifies a particular calculator design within Casio’s scientific-calculator range. It is useful when locating manuals, function guides, and support information.
• MPN: The manufacturer part number distinguishes a specific commercial product configuration for cataloging, inventory, and distribution purposes.
• UPC: The Universal Product Code is a 12-digit barcode identifier commonly used for retail inventory and product matching in North America.
• EAN: The European Article Number is a 13-digit trade-item identifier used in international product-distribution systems.
• GTIN: The Global Trade Item Number is the broader international identification system that includes UPC, EAN, and GTIN-14 formats.
• ASIN: An ASIN identifies a product record within a particular online catalog. It is not a manufacturer-assigned model or part number.
• ISBN: An International Standard Book Number identifies books and certain publishing products and does not apply to this calculator.

Common Uses

The fx-260 SOLAR II is used for numerical calculations that require more functions than a basic four-operation calculator provides. Its non-graphing design makes it suitable for situations where a compact scientific calculator is appropriate.

• General mathematics and arithmetic
• Pre-algebra and algebra calculations
• Trigonometric calculations
• Fraction operations
• Scientific notation and exponential calculations
• Logarithmic calculations
• Single-variable statistical calculations
• Permutations and combinations
• Coordinate conversions
• Science and technical coursework

Maintenance and Care

The calculator requires little routine maintenance because its normal power source is solar. Basic care should focus on keeping the display, solar panel, keyboard, and protective case free from contamination and physical damage.

• Wipe the exterior with a soft, dry cloth when cleaning is necessary.
• Avoid solvents, abrasive cleaners, and excessive moisture.
• Keep liquids away from the keyboard and solar panel.
• Protect the LCD from strong impacts or excessive pressure.
• Use the supplied hard case during storage or transport.
• Do not expose the calculator to excessive heat, direct heat sources, or prolonged extreme temperatures.
• Keep the solar panel unobstructed when operating the calculator.

Safety Information

The fx-260 SOLAR II is a low-power electronic calculator intended for ordinary indoor educational, office, and personal use. It should be handled as a precision electronic device rather than exposed to liquids, severe impact, or extreme temperatures.

• Do not disassemble or modify the calculator.
• Avoid dropping the unit or subjecting the LCD to strong mechanical pressure.
• Keep the calculator away from liquids and excessive humidity.
• Do not place the unit near strong heat sources.
• Follow applicable examination rules before bringing the calculator into a controlled test environment.

Technical Specifications

Product History

The fx-260 SOLAR II belongs to Casio’s long-running fx family of scientific calculators. Its name identifies it as a later version of the fx-260 Solar design, retaining solar operation and a compact non-graphing scientific-calculator format.

Casio continues to list the fx-260 SOLAR II within its standard scientific-calculator range. A black version and a separately identified pink edition have been publicly documented. A verified chronological record of every manufacturing revision or a designated direct successor has not been established.

Key Features

• Solar operation removes the need for routine battery replacement during normal use.
• Scientific functions cover algebraic, exponential, logarithmic, and trigonometric calculations.
• Fraction operations support calculations involving ordinary and mixed fractions.
• Statistical functions provide tools for common numerical data calculations.
• Angle calculations can be performed using commonly used angular measurement modes.
• Coordinate conversion supports conversion between rectangular and polar representations.
• Independent memory allows values to be stored and recalled during multi-step calculations.
• A protective hard case shields the keyboard and display during storage or transport.

Package Contents

• Casio fx-260 SOLAR II scientific calculator
• Protective hard case
• Instruction documentation

Compatibility

The fx-260 SOLAR II operates as a standalone calculator and does not require a computer, mobile device, application, or external power adapter. Its mathematical functions can therefore be used without a connected digital platform.

Compatibility with classroom assignments and standardized examinations depends on the rules established by the school, instructor, testing organization, or examination program. Calculator policies can change, so permitted-model requirements should be checked for each examination rather than assumed from the calculator’s non-programmable status.

Frequently Asked Questions

How do I identify the correct fx-260 SOLAR II model?

Check the model information printed on the calculator or its original packaging. The fx-260 SOLAR II name distinguishes this version from earlier fx-260 calculators and other models in Casio’s fx scientific-calculator family.

Does the fx-260 SOLAR II need batteries?

The model is designed around solar power. Normal operation therefore does not require routine installation or replacement of disposable batteries.

Can the calculator graph equations?

No. It is a conventional scientific calculator rather than a graphing calculator. Equations can be evaluated numerically using its supported mathematical functions, but graphs are not displayed.

Can users write programs on the calculator?

No. The fx-260 SOLAR II is classified as non-programmable. It performs its built-in mathematical operations without storing user-created programs.

Can it work with fractions?

Yes. Fraction calculations are part of its built-in mathematical capabilities, including operations encountered in general mathematics and algebra.

Does it support trigonometry?

Yes. It supports standard and inverse trigonometric calculations as well as hyperbolic and inverse hyperbolic functions.

Can it perform statistical calculations?

Yes. The calculator includes statistical capabilities for common numerical analysis tasks. Users should select the appropriate calculation mode before entering statistical data.

Does it support scientific notation?

Yes. Scientific notation is available through its numerical display and formatting functions, making the calculator suitable for very large or very small numerical values.

Can the protective case be removed?

Yes. The hard cover is an accessory rather than a permanent part of the operating surface. It protects the calculator when it is being stored or transported.

Does it connect to a computer or smartphone?

No computer or smartphone connectivity is documented for this model. It is intended to function independently as a handheld calculator.

Is software installation required?

No. All supported calculations are performed using functions built directly into the calculator.

How should the display be cleaned?

A soft, dry cloth is appropriate for routine surface cleaning. Chemicals, abrasive cleaners, and excessive moisture should be avoided because they can damage the housing or display.

Can the calculator be used during an examination?

That depends on the examination’s current calculator policy. Rules should be checked directly with the relevant school, instructor, or testing organization before the calculator is brought into an exam.

What warranty applies?

Public distribution records for this configuration identify a one-year limited warranty. The exact coverage, exclusions, and service procedure depend on the terms supplied with the product and the applicable region.

Buying Considerations

The fx-260 SOLAR II is a non-graphing scientific calculator, so its function set should be matched to the mathematical work involved. Tasks requiring graph plotting, symbolic algebra, extensive equation solving, programming, or computer connectivity require capabilities outside this model’s documented feature set.

• Check whether the required coursework needs a scientific or graphing calculator.
• Verify current calculator restrictions before use in examinations.
• Consider whether 144 built-in functions cover the intended mathematics curriculum.
• Account for the calculator’s traditional scientific input method when comparing it with textbook-display models.
• Check the model designation carefully because Casio produces several visually similar scientific calculators.
• Consider whether solar-only operation is suitable for the lighting conditions where the calculator will normally be used.
• Retain the hard case to protect the display and keyboard during transport.

Customer Feedback Summary

This section summarizes recurring themes in publicly available customer feedback. These observations describe user experiences and are not verified technical specifications or controlled performance measurements.

Positive feedback frequently mentions the calculator’s compact form, straightforward key layout, solar operation, and range of scientific functions. Users also commonly discuss the hard protective cover as useful for carrying the calculator in backpacks, desks, and other storage spaces.

Some reported limitations concern the simpler display and input system compared with newer scientific calculators that reproduce mathematical expressions in textbook-style formatting. Users who need graphing, programming, advanced equation-solving tools, or larger multi-line displays also note that those capabilities are outside the fx-260 SOLAR II’s design. Experience with the calculator can therefore depend strongly on the type of mathematics being performed.

Related Products

Casio’s scientific-calculator range includes additional fx-series models with different displays, power systems, and mathematical capabilities. Related products include other non-graphing scientific calculators as well as models designed for more advanced coursework.

• Casio fx-260 SOLAR II Pink Edition
• Casio fx-300MS Plus 2nd Edition
• Casio fx-300ES Plus 2nd Edition
• Other Casio standard scientific calculators in the fx series

Related models can use different input methods and function sets even when they serve similar educational purposes. The exact model number should therefore be checked when locating manuals or classroom instructions.

Last Updated

August 16, 2026