How accurate are these academic calculators?

All 235+ calculators use official grading formulas and conversion tables from educational institutions and standardized testing organizations worldwide. The formulas are verified against official educational standards including College Board, ACT Inc., universities' grading policies, and international education systems. Results are highly accurate for planning and estimation purposes, though students should always verify final calculations with their institution's official records for college applications and transcripts.

Can I use these calculators for college applications?

Yes, these calculators are excellent tools for college application preparation. You can estimate your GPA for application forms, convert international grades to US equivalents, predict SAT/ACT scores from practice tests, calculate your academic index, and understand how different grade scenarios affect your overall academic standing. However, always use official transcripts and verified scores for final college applications. These calculators are best used for planning, goal-setting, and understanding what grades you need to achieve your target GPA.

Are these calculators free to use?

Yes, all 235+ academic calculators are completely free with unlimited use. There are no registration requirements, subscriptions, hidden fees, or premium features. You can access every calculator instantly in your browser without downloading any software. Your data stays private since all calculations happen locally on your device, not on our servers. We believe academic tools should be accessible to all students worldwide, regardless of their financial situation.

Which countries and grading systems are supported?

We support 50+ countries and education systems including: United States (GPA 4.0 and 5.0 scales), India (CGPA 10-point scale, CBSE, ICSE), United Kingdom (degree classifications, A-Levels, GCSE), Germany (1-6 scale, Abitur), Canada (provincial systems, R-Score), Australia (7-point GPA, ATAR, VCE, HSC), France (0-20 scale, Baccalauréat), China (百分制, Gaokao), Japan (優良可), Korea, and many more European, Asian, and international systems. We also provide conversion tools between different grading systems.

Do the calculators work on mobile devices?

Yes, all calculators are fully responsive and optimized for mobile phones, tablets, and desktop computers. The interface automatically adapts to your screen size for comfortable use on any device. You can calculate your GPA on your phone during class, check your grades on a tablet while studying, or use a desktop computer for detailed semester planning. No app download is required – simply access the calculators through your mobile browser.

How do I convert my international grades to US GPA?

We offer specialized conversion calculators for international grade systems. Choose your country-specific calculator (e.g., German to US GPA Converter, Chinese to US GPA Converter, Indian to US GPA Converter) or use the International Grading System Converter for general conversions. Each calculator uses verified conversion tables from educational institutions and credential evaluation services. For official transcripts required by US universities, you may still need a professional credential evaluation service like WES or ECE.

Can I calculate weighted and unweighted GPA?

Yes, we have separate calculators for both weighted GPA (which accounts for honors, AP, and IB course difficulty) and unweighted GPA (standard 4.0 scale). The Weighted GPA Calculator allows you to assign different point values to advanced courses (typically 5.0 for AP/IB, 4.5 for honors), while the Unweighted GPA Calculator treats all courses equally. Many colleges look at both metrics, so it's helpful to calculate both for your college applications.

What standardized tests are covered?

We cover all major standardized tests: SAT, ACT, PSAT, PreACT, all 38 AP exams, IB Diploma, GRE, GMAT, LSAT, MCAT for graduate admissions, and language proficiency tests including TOEFL, IELTS, PTE, Cambridge English, and TOEIC. Each calculator helps you predict scores from practice tests, convert between test formats (SAT to ACT), and understand scoring scales.

Is my data private and secure?

Absolutely. All calculations happen directly in your web browser using JavaScript – your grades, test scores, and personal academic data never leave your device or get sent to our servers. We don't store, track, or share any of your academic information. There are no cookies tracking your usage, no accounts requiring personal information, and no data collection. Your privacy is completely protected.

How often are the calculators updated?

We regularly update our calculators to reflect changes in grading policies, standardized test formats, and educational standards. When institutions like College Board update SAT scoring, universities change their grading scales, or countries modify their education systems, we update the corresponding calculators. Major updates typically occur at the start of each academic year, with interim updates as needed throughout the year.

Academic Calculators for Students Worldwide

Access 235+ free academic calculators designed for students, educators, and academic advisors. Calculate GPA, CGPA, grades, standardized test scores, and convert between international grading systems with instant, accurate results.

Supporting 50+ countries and education systems • Trusted by millions of students globally

235+ Free Calculators

50+ Countries Supported

100% Free Forever

Your Complete Academic Success Toolkit

Whether you're a high school student preparing for college applications, an undergraduate tracking your semester progress, an international student converting grades, or an educator planning curriculum assessments, these calculators provide the precision and flexibility you need.

Every calculator is built using official grading formulas, standardized testing scoring methods, and verified conversion tables from educational institutions worldwide. Calculate cumulative GPA across multiple semesters, predict SAT scores from practice tests, convert CGPA to percentage for job applications, or understand how your international grades translate to the US system.

All tools work instantly in your browser with no downloads, registrations, or hidden fees. Your data stays completely private since all calculations happen on your device, not our servers.

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GPA Calculators

Calculate weighted, unweighted, cumulative, and semester GPA on 4.0, 5.0, and 10-point scales

37 Tools

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CGPA Calculators

Calculate CGPA for Indian universities, engineering programs, and South Asian education systems

42 Tools

Why Students Choose Our Calculators

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Global Coverage

Supporting grading systems from 50+ countries including US, UK, Canada, India, Germany, Australia, and more.

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Verified Accuracy

All formulas verified against official educational standards and updated regularly for accuracy.

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Instant Results

Real-time calculations with no delays. See your GPA, grades, or test scores update as you type.

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Complete Privacy

All calculations happen in your browser. Your academic data never leaves your device.

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Standardized Test Calculators

Calculate and predict scores for SAT, ACT, AP, IB, GRE, GMAT, LSAT, MCAT and more

45 Tools

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Language Test Calculators

Calculate scores for TOEFL, IELTS, PTE, Cambridge English, TOEIC and other language proficiency tests

5 Tools

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University-Specific Calculators

Specialized GPA calculators for Harvard, MIT, Stanford, Yale, and other prestigious institutions

9 Tools

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US Grade Calculators

Calculate US letter grades, percentage grades, and weighted grades

4 Tools

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UK Grade Calculators

Calculate UK university grades, A-Levels, GCSE, and degree classifications

13 Tools

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German Grade Calculators

Calculate German university grades, Abitur, and convert to US GPA

8 Tools

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French Grade Calculators

Calculate French university grades (0-20 scale), Baccalauréat, and mention levels

6 Tools

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Canadian Grade Calculators

Calculate Canadian GPA, provincial grades, and R-Score for Quebec

8 Tools

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Australian Grade Calculators

Calculate Australian GPA (7-point scale), WAM, ATAR, and state-specific grades

9 Tools

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New Zealand Grade Calculators

Calculate NCEA Level 1, 2, 3 and university grades

5 Tools

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Asian Grade Calculators

Calculate grades for China, Japan, Korea and other Asian education systems

10 Tools

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Indian Grade Calculators

Calculate SSC, HSC, CBSE, ICSE, ISC and state board grades

7 Tools

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European Grade Calculators

Calculate grades for Netherlands, Spain, Italy, Switzerland, and other European countries

15 Tools

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Grade Conversion Tools

Convert between percentage, letter grades, GPA scales, and international grading systems