About Us

Topcalcs is a trusted one-stop online store to buy and sellback quality refurbished graphing calculators from top brands like Texas Instruments, Hewlett-Packard, and Casio. For over 10 years, our mission has been to save our valued customers—students, parents, teachers, schools, and professionals—money, while giving the most popular name-brand calculators a second life to minimize e-waste and help save the planet. 

All of our calculators, including ACT- and SAT-approved calculators like the TI-84 Plus or Casio FX-9750GII, are value-priced (at nearly half the price of new calculators) with a risk-free, one-year warranty, so you can be confident in your purchase. To top it off, we offer fast and FREE shipping! If you love savings as much as we do, there’s no other place to shop for your next graphing calculator. Our wide selection and savings really add up.

Topcalcs—Great selection. Low prices. Less waste.