Casio fx-260 Solar II Scientific Calculator
- Calculator Type: Engineering/Scientific
- Display Type: LCD
- Power Source: Solar
- Screen Size: 2.2 inches
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A straightforward, test-approved scientific calculator for students who need trig and fraction functions but not graphing. Buy this one if simplicity and exam approval matter more than extra features.
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ASIN: B071R3H9WBModel: FX-260Category: Scientific Calculators
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Overview
The fx-260 Solar II is Casio's smallest scientific calculator, built for middle and high school math from pre-algebra through trigonometry. It runs on solar power with a battery backup, and it is cleared for use on the SAT, PSAT, ACT and NMSQT.
It skips graphing entirely, which keeps the keypad simple and the price low for a calculator students may need to replace after losing one at school. The 10-digit display and fraction key cover the functions most algebra and trig classes actually test, without the extra menus of a graphing model.
- 10-digit display
- Trig and inverse trig functions
- Permutations, combinations and factorials
- Solar plus battery backup power
Who it's for
Good for a student who needs one dependable calculator for years of pre-algebra through trig homework and standardized tests, not for calculus or graphing coursework. Parents replacing a lost or broken school calculator will find it an easy, low-cost match.
Pros and cons
- Approved for SAT, PSAT, ACT and NMSQT
- Solar power with battery backup avoids dead-battery surprises
- Fraction key simplifies mixed-number and rational calculations
- No graphing functions for calculus or precalculus work
- 10-digit display is basic compared to newer models
Performance notes
Solar Plus technology draws power from ambient light and falls back to the battery in dim rooms, so the calculator does not go dark mid-test. The fraction key handles mixed numbers and rational operations directly, and the decimal setting can be locked for consistent rounding across an assignment or report.
Specifications
| Brand | Casio |
|---|---|
| Model | FX-260 |
| Dimensions & fit | |
| Screen Size | 2.2 inches |
| Item Weight | 0.02 pounds |
| Item Dimensions L X W | 5 × 2.9 inches |
| Power & efficiency | |
| Power Source | Solar |
| Construction & materials | |
| Enclosure Material | Plastic |
| Color | Black |
| Compatibility & installation | |
| Compatible Devices | Any device with a standard calculator function |
| Included components | |
| Unit Count | 1 |
| Number Of Packs | 1 |
| Warranty & support | |
| Warranty Description | 1 year |
| Other details | |
| Calculator Type | Engineering/Scientific |
| Display Type | LCD |
| Number Of Items | 1 |
| Mfr Part Number | FX-260 SOLARII-S-IH |
| Item Type Name | Scientific Calculator |
| Builtin Media | Calculator, Hard Case Cover, Instructions |
Frequently asked questions
Is the Casio fx-260 Solar II allowed on the SAT?
Yes, it is permitted on the SAT, PSAT, ACT, NMSQT and AP exams.
Does the fx-260 Solar II have a graphing screen?
No, it is a standard scientific calculator without graphing, built for pre-algebra through trigonometry.
How is the Casio fx-260 Solar II powered?
It uses solar power with a battery backup, so it keeps working in low light.