Calculators

Best Calculators for High School Students

Updated November 2026 · 21 buying guides for Canadian students

Overview

High school is where calculator needs split. Grade 9 and 10 math usually works fine with a scientific calculator. Senior courses in functions, calculus, and physics often require graphing.

The right sequence is to start with a solid scientific calculator and add a graphing model when the course actually requires it. That keeps costs down and avoids carrying an expensive device before it is needed.

Top Picks at a Glance

PickBest forWhy it stands out
Casio FX-991CW ClassWiz Best overall scientific A strong all-round scientific calculator for Grade 9 through Grade 12.
Texas Instruments TI-30XS MultiView Best for test familiarity A common exam calculator with a simple layout that many teachers demonstrate.
Texas Instruments TI-84 Plus CE Best graphing upgrade The standard graphing calculator for senior math. Buy it when the course requires graphing.
Casio FX-9750GIII Best value graphing A lower-cost graphing option that covers senior functions, statistics, and graphing.
Sharp EL-531 Best backup An inexpensive scientific calculator to keep in the bag as a spare.

The Best Calculators for High School Students in Detail

Casio FX-991CW ClassWiz

Best overall scientific

Casio

A strong all-round scientific calculator for Grade 9 through Grade 12.

  • Natural display
  • Solar and battery
  • Good for senior math
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Texas Instruments TI-30XS MultiView

Best for test familiarity

Texas Instruments

A common exam calculator with a simple layout that many teachers demonstrate.

  • Multi-line display
  • Simple
  • Durable
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Texas Instruments TI-84 Plus CE

Best graphing upgrade

Texas Instruments

The standard graphing calculator for senior math. Buy it when the course requires graphing.

  • Colour screen
  • Rechargeable
  • Classroom standard
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Casio FX-9750GIII

Best value graphing

Casio

A lower-cost graphing option that covers senior functions, statistics, and graphing.

  • Affordable
  • Good display
  • Reliable
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Sharp EL-531

Best backup

Sharp

An inexpensive scientific calculator to keep in the bag as a spare.

  • Cheap
  • Clear display
  • Light
Check price on Amazon.ca

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What to Look For

Start scientific, upgrade later

A good scientific calculator covers most Grade 9 and 10 work. Wait until the course outline requires graphing.

Follow the course outline

Teachers usually list the required model in the first week. Buying that exact model avoids compatibility problems.

Keep a backup

A cheap second scientific calculator is worth having for exam days, lost devices, and dead batteries.

Label everything

Calculators are the most commonly lost item in a high school bag. A name label and a case reduce replacement costs.

Best Calculators for High School Students FAQ

What calculator do you need for Grade 9 math?

A basic scientific calculator is enough for most Grade 9 courses. Check the teacher's list, but there is usually no need for a graphing calculator yet.

When do students need a graphing calculator?

Usually in senior functions, calculus, or advanced physics. Some schools provide class sets, so confirm before buying.

Can a phone replace a calculator at school?

Many schools do not allow phones during class or exams. A dedicated calculator is still required for most math courses.

More Student Guides

Browse all school product buying guides or see the back-to-school supplies checklist for the full list of what Canadian students need.