Graph y = x² − 4
Y= → X² − 4 → GRAPHThen use the graph tools to inspect zeros, the vertex and table values.
Learn this workflow →Free online graphing calculator
TI-84 Calculator Online
Use the calculator for graphing, statistics, tables, matrices and familiar Texas Instruments TI-84 Plus and TI-84 Plus CE workflows.
Interactive workspace
Online runtimeUse the TI-84 first.
Calculate now. Open a workflow only when you need help with the next step.
TI-84 calculator
Loading calculator…
What this page is for
A calculator workspace, not a calculator-shaped article.
The interactive calculator stays at the top because students usually arrive with a task already in mind. Use the on-screen keys for familiar TI-84 workflows, enlarge the calculator when needed, and move to Learn or Practice without changing the product context.
This browser experience supports many familiar workflows associated with TI-84 Plus and TI-84 Plus CE classroom use, but it is not identical to every physical model. For course-specific instructions or assessments, follow your teacher and current official rules.
Y=Functions and graphsEnter functions, graph them and inspect their behavior.
WINWindow, Zoom and TRACEChange the view and inspect coordinates on a graph.
STATStatistics and listsEnter datasets and run common one-variable statistics.
[A]MatricesCreate matrices and perform supported operations.
sinTrigonometryEvaluate trig expressions after checking Degree or Radian mode.
Popular workflows
Start with the task you recognize.
Each example connects the calculator with the corresponding lesson so students can move from doing to understanding without searching a separate manual.
Evaluate y = 2x + 1 at x = 3
Y= → TABLEUse the table or TRACE to confirm that the output is 7.
Learn tables and TRACE →Find the mean of a list
STAT → EDIT → 1-Var StatsEnter values in L1 and read the summary carefully.
Learn statistics →Find a determinant
MATRIX → EDIT → det([A])Check matrix dimensions before you calculate.
Learn matrices →Calculate sin(30°)
MODE → Degree → sin(30)The angle mode is part of the problem, not an afterthought.
Learn trig mode →Fix a blank graph
ZOOM → ZStandardIf the graph is still blank, check the function and its enabled state.
Open error checks →Frequently asked questions
Know what the online calculator can—and cannot—replace.
These answers focus on the browser workspace, internet requirements and classroom use.
What is the TI-84 Calculator Online on Calc for Class?
It is a browser-based calculator workspace for common graphing, statistics, table, matrix and classroom workflows, paired with learning and practice pages.
Is it free to use?
Yes. These core pages can be used without creating a Calc for Class student account.
Does it exactly replace every physical TI-84 model?
No. It supports many familiar workflows associated with the TI-84 family, but layouts and capabilities can differ from a physical calculator. Follow course and official calculator guidance when exact behavior matters.
Why does the calculator need an internet connection?
The calculator runtime is delivered from an external service, so the interactive calculator normally needs an internet connection even though the surrounding learning content is ordinary web content.
Can I use an online calculator during an exam?
Do not assume it is allowed. Calculator permissions depend on the school, course and testing provider. Always follow the current rules for the assessment.
Is Calc for Class affiliated with Texas Instruments?
No. Calc for Class is an independent educational website and is not affiliated with or endorsed by Texas Instruments.
Independent educational resource. TI-84, TI-84 Plus and TI-84 Plus CE are trademarks of Texas Instruments Incorporated. Calc for Class is not affiliated with or endorsed by Texas Instruments. Online tools may not be permitted during assessments.