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Texas Instruments TI-84 Series
One of the most widely used graphing calculator families for high school and college mathematics.
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From algebra class to engineering, accounting and everyday math, start with the type of calculator you actually need.
TI-84, TI-83, TI-Nspire, Casio and more.
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These are some of the calculator families people look for most. Older models can still be excellent machines — often at a fraction of the cost of buying new.
One of the most widely used graphing calculator families for high school and college mathematics.
Find Used TI-84 Calculators →Advanced graphing and STEM functionality for students, engineering and technical coursework.
Find Used TI-Nspire Calculators →A legendary financial calculator widely used in banking, finance, real estate and investment analysis.
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Shop calculators for school → For professionalsFinancial, engineering, construction and specialty calculators built for real work — even if they aren't the newest model.
Shop calculators for work →Learn which models are worth considering, what features matter, and what you should check before purchasing a pre-owned calculator.
What to check before buying a pre-owned calculator.
Compare two of the most popular used graphing calculator families.
Popular options for algebra, geometry, statistics and calculus.
Know what cosmetic wear, battery issues and screen problems mean.
A quick checklist for keys, screens, batteries and functionality.
Skip the full-retail price. Browse popular calculator models, compare your options and find a machine that still has plenty of calculations left in it.
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