Education
GPA, grades & study calculators
Education calculators
13 tools for GPA, CGPA → %, Exam marks and more — accurate, instant, and free.
Reckonist’s Education calculators are free study and grade tools — CGPA and GPA, converting a CGPA to a percentage, the marks you need on a final, and attendance — that run entirely in your browser. They need no sign-up, and your grades and inputs never leave your device.
CGPA & Indian grading4
CGPA Calculator
Credit-weighted CGPA on the 10-point scale — add your subjects and credits.
CGPA to Percentage Calculator
Convert CGPA to percentage (and back) with your university's exact formula — VTU, Anna, JNTU, CBSE & more.
SGPA to CGPA Calculator
Average your semester SGPAs into a cumulative CGPA — equal or credit-weighted.
Marks Percentage Calculator
Marks percentage across subjects — CBSE best-5, plus the marks you need for a target.
GPA & US grading3
GPA Calculator
US 4.0-scale GPA — weighted or unweighted, cumulative, with letter grades.
Weighted Grade Calculator
Course grade from weighted categories or points — with drop-lowest.
Final Grade Calculator
The score you need on the final exam to hit your target grade.
Test prep3
SAT Score Calculator
Digital SAT raw → scaled range, total (400–1600) and percentile — estimate.
ACT Score Calculator
Enhanced ACT (2025) raw → scaled composite (1–36), optional Science and SAT equivalent — estimate.
AP Score Calculator
Per-exam AP MCQ + FRQ → composite → predicted 1–5, with the raw needed for a 4/5 — estimate.
Study utilities3
Attendance Percentage Calculator
Attendance % + how many classes you can skip (or must attend) to hold 75%.
Class Rank Calculator
Class rank → percentile, top-% and decile (and back).
Words to Pages Calculator
Convert words ↔ pages by font size & spacing, with reading time.