The Trusted Source for Refurbished Graphing Calculators
Quality tested refurbished graphing calculators at honest prices...fast U.S. shipping and real support when you need it.
" Graphing calculators are expensive, but students still need something dependable for class and exams. MathRenew started to provide a trustworthy option...professionally tested and backed by a real warranty, at a price that makes sense. "
Our Professional Testing Process
We test the exact things that typically cause refurbished calculators to fail: keys, screen clarity, power contacts, and memory reset.
Full Diagnostic Check
Complete hardware and software testing
Keypad Response Test
Every button tested for proper function
Screen Inspection
Display quality and clarity verified
Cleaning & Sanitation
Professional cleaning and sanitizing
Battery Compartment Check
Tested for power and connections
Memory Reset
Factory reset for a fresh start
Built on Trust
- ✅ Trusted by students, parents, tutors, and schools nationwide
- ✅ Clear condition grading and honest listings
- ✅ Real support—email us anytime at support@mathrenew.com
Our Commitment to You
We stand behind every calculator we sell with a 1-year warranty, 30-day easy returns, and fast U.S. shipping.
Questions? Email us at support@mathrenew.com — we typically reply within 1 business day.
Whether you're a student, parent, tutor, school, or reseller — MathRenew is here to help.