Best Casio Calculator for SPM, STPM or Uni in Malaysia 2026
Quick look
This guide compares three Casio ClassWiz scientific calculators — the fx-570EX, the fx-570MY CW and the fx-991CW — for students in Malaysia looking at options for SPM, STPM or university in 2026. It is a comparison, not an approval list. Read the exam warning below before you buy.
Here is the one-line difference for each. The fx-570EX is the ClassWiz EX model, listed by Casio's EX catalogue at 552 functions. The fx-570MY CW is the Malaysia CW model, with app-based menus and Math Box. The fx-991CW runs on solar plus a button battery and has a thinner, lighter body.
Important: Before you buy any of them for an exam, read the warning below. A shop listing that says "SPM/STPM" is a seller's claim, not official approval. Check with your school or exam centre before buying or bringing a calculator into an exam.
Disclosure: This post contains affiliate links. We may earn a commission at no extra cost to you. See our affiliate disclosure.
Exam rules in Malaysia
Start with the thing most students get wrong. We found no current official list of approved calculator models for SPM or STPM. None of these three models is named in any official exam document we could open.
The Jadual Waktu Peperiksaan SPM 2026 allows candidates to bring a calculator for relevant papers. It names no models and has no approved model list.
The Peraturan dan Skema STPM 2026 is stricter in wording. Only a silent, non-programmable, non-graphing scientific calculator may be used, except where a particular question does not allow one. User manuals may not be brought in. Exam centres do not provide power for calculators. No models are named.
Older guidance matters too. The Surat Pekeliling Ikhtisas Bil. 6/2002 gives a specification only, not a model list. It requires a non-programmable calculator with at least an 8-digit display, degree/radian conversion, fraction/decimal conversion, memory and other listed functions. We could not confirm that this circular is still the current 2026 rule.
Two more cautions. Do not assume the fx-991CW is allowed just because it looks similar to the fx-570MY CW. They are different models, and a family resemblance is not approval. Exam or setup mode is not stated for any of these three models. University exam rules were not checked for this post. If you are sitting university papers, ask your faculty directly.
Quick comparison
Figures below are from official Casio catalogues, manuals and support pages. Where a figure was not stated, the cell says so.
Casio fx-570EX
The fx-570EX is the ClassWiz EX model. Casio's EX catalogue lists 552 functions, and a search snippet lists "Natural Textbook Display" for it. It runs on one AAA battery, with battery life of about two years at one hour of use per day.
It may suit a student who wants that large official function count, plus the spreadsheet and equation tools, and who is fine with AAA power.
Casio fx-570MY CW
The fx-570MY CW is the Malaysia ClassWiz CW model, and that is its main draw. You work from app-based menus, including Calculate, Equation, Spreadsheet and Math Box. Math Box covers dice roll, coin toss and circle activities. A Verify function checks whether an input equation or solution is true, and it works with the Calculate, Complex, Table and Equation apps. It runs on one AAA battery, with about two years of use at one hour a day.
One honest gap: Casio does not state the fx-570MY CW display type or function count on its official pages. Those cells in the table say so, and I have not filled them in.
It may suit a student who wants the newer menu-driven CW interface and the Malaysia model.
Casio fx-991CW
The fx-991CW is the thinnest and lightest of the three, at 95 g. It runs on a built-in solar cell plus one LR44 button battery, with about two years of use at one hour a day. That solar-plus-battery setup is the clearest practical difference from the two 570 models, which use AAA batteries only.
Casio UK's page snippet describes it as "an upgraded version of the Casio fx-991EX, containing additional features, to include a high definition display and improved menu navigation." That wording is Casio UK's, and it compares the fx-991CW with the fx-991EX only — not the fx-570MY CW with the fx-570EX. A Casio UK page snippet also lists 540+ functions.
It may suit a student who wants a slimmer body, solar support and icon-based menus. Remember the caution above: looking like the fx-570MY CW is not approval.
Before you buy
Prices for all three were not confirmed on 11 November 2026. Check today's price on Lazada before you decide.
Then confirm the exam rules. Ask your school or exam centre whether the model you want is acceptable before you buy, and ask again before each exam, because rules can change. For anyone comparing the best Casio calculator for SPM, STPM or uni in Malaysia in 2026, the safer test is simple: get the model your exam centre accepts, not the one a shop listing calls approved.
