The complete calculator toolkit for modern students
From GPA and CGPA to compound interest and quadratic equations, Ahasn.xyz brings you 35+ handcrafted, mobile-friendly calculators with detailed guides, formulas, and worked examples — designed by educators for academic success.
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GPA Calculator
Mathematics
3 credit hours
Physics
4 credit hours
English
3 credit hours
Your Semester GPA
3.78
Accurate
Up to 4 decimals
Lightning
Instant results
Browse tools by category
Eight carefully curated categories covering every academic need — from grade tracking to financial planning.
35+ premium calculators
Each tool comes with detailed educational content, formulas, step-by-step examples, and FAQs.
Grade & GPA
11 toolsGPA Calculator
Calculate your Grade Point Average (GPA) instantly for any grading scale.
CGPA Calculator
Compute your Cumulative Grade Point Average across multiple semesters.
SGPA Calculator
Calculate Semester Grade Point Average (SGPA) accurately.
Grade Calculator
Find your final class grade from weighted assignments and exams.
Final Grade Calculator
Determine the score you need on your final exam to reach your target grade.
Percentage Calculator
Calculate percentage of marks, increase, decrease and more.
Weighted Average Calculator
Compute weighted averages for assignments, quizzes and exams.
Attendance Calculator
Check attendance percentage and how many classes you can skip.
Test Score Calculator
Calculate test scores, percentage and grade from correct/total.
Assignment Grade Calculator
Determine your grade on an assignment from points earned.
Class Rank Calculator
Estimate class rank and percentile from total students.
Financial
5 toolsStudent Loan Calculator
Estimate monthly payments and total interest on student loans.
Simple Interest Calculator
Calculate simple interest with the formula I = PRT.
Compound Interest Calculator
See how compound interest grows your savings over time.
College Cost Calculator
Project total college expenses including tuition, housing and fees.
Scholarship ROI Calculator
Measure the return on investment of scholarships vs student loans.
Math
9 toolsAverage Calculator
Find the arithmetic mean of any set of numbers quickly.
Fraction Calculator
Add, subtract, multiply and divide fractions with steps.
Ratio Calculator
Simplify ratios and solve ratio proportions instantly.
LCM Calculator
Find the Least Common Multiple of two or more numbers.
GCD Calculator
Calculate the Greatest Common Divisor of any integers.
Quadratic Equation Solver
Solve ax² + bx + c = 0 with detailed step-by-step working.
Statistics Calculator
Compute mean, median, mode, range, variance and standard deviation.
Probability Calculator
Calculate single and multiple event probabilities easily.
Combinations Calculator
Calculate nCr combinations and permutations instantly.
Geometry
4 toolsTriangle Area Calculator
Find the area of any triangle using base-height or Heron's formula.
Circle Calculator
Compute area, circumference and diameter of any circle.
Volume Calculator
Calculate volume of cubes, cylinders, spheres, cones and more.
Surface Area Calculator
Find surface area of common 3D geometric shapes.
Converters
3 toolsStudy Tools
3 toolsHealth & Fitness
1 toolsBuilt different. Built for students.
Every calculator on Ahasn.xyz is handcrafted with three principles: accuracy, education, and accessibility.
Pinpoint Accuracy
Every formula is verified against textbook references and peer-reviewed academic sources. Our calculators handle edge cases, decimal precision, and weighted scenarios that generic tools miss.
Educational First
We don't just give you a number — every tool ships with a detailed guide, formula explanation, worked examples, and FAQ so you actually understand the math behind the result.
Always Free
No paywalls, no sign-ups, no premium tiers. Every calculator on Ahasn.xyz is free forever, mobile-optimized, and works offline once loaded. Education should not have a price tag.
Three steps to your answer
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Pick the right tool
Browse by category or use the search bar to find the calculator that matches your need. Every tool page clearly explains what it does and when to use it.
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Enter your values
Fill in the input fields with your data. Our smart inputs validate on the fly, accept decimal values, and remember your last session for convenience.
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Get instant results & learn
See your result instantly with a step-by-step breakdown. Read the in-depth guide below each calculator to understand the formula, see worked examples, and answer common questions.
Our formulas are verified against authoritative sources
We cross-reference every calculation method against these primary sources to ensure accuracy. Links open in a new tab.