Mark to Grade Converter – Convert Exam Marks to Letter Grades Instantly

Quickly convert your numerical marks to letter grades or grade points with our Mark-to-Grade Converter. Supports custom grading scales including A–F, O/A/B/C, and 10-point systems used globally.

Marks Obtained

Maximum Marks

Grading Scale

Output Format

Grade Conversion Results

Enter marks and click Convert to see results

How to Use This Mark to Grade Converter

Enter your marks obtained

Type the score you received on your test or assignment. For example, if you scored 85 out of 100, enter "85".

Set the maximum marks and grading scale

Enter the total possible marks (default is 100). Choose your grading scale: Standard (A-F), IB (1-7), Cambridge IGCSE (A*-U), or CBSE (A1-E).

Click Convert to see your grade

The calculator shows your percentage, letter grade, grade point (GPA), and performance status instantly.

Grading Scale Comparison Table

Percentage	Standard (US)	IB Scale	Cambridge	CBSE (India)
93-100%	A (4.0)	7	A*	A1 (10.0)
90-92%	A- (3.7)	7	A*	A1 (10.0)
80-89%	B+ to B- (3.3-2.7)	6	A	A2 (9.0)
70-79%	C+ to C- (2.3-1.7)	5	B	B1 to B2 (8.0-7.0)
60-69%	D+ to D- (1.3-0.7)	4	C	C1 to C2 (6.0-5.0)
50-59%	F (0.0)	3	D	C1 to C2 (6.0-5.0)
Below 50%	F (0.0)	1-2	E to U	D to E (4.0-0.0)

Note: Exact grade boundaries may vary by school or examination board. Check your institution's specific grading policy.

Understanding Grading Systems

Standard Letter Grades (US System)

The A-F grading system is used across most US schools and universities. Each letter corresponds to a grade point on a 4.0 scale. A represents excellent work (93-100%), while F indicates failure (below 60%). Plus and minus modifiers provide finer distinctions within each letter grade.

IB Grading Scale

The International Baccalaureate uses a 1-7 scale, where 7 is the highest. A score of 4 is considered passing. IB grades are based on a combination of internal assessments and external examinations. The final IB diploma requires a minimum of 24 points across six subjects.

Cambridge IGCSE Grades

Cambridge IGCSE uses grades A* through G, with U indicating ungraded. A* represents outstanding performance (90%+). The system is criterion-referenced, meaning grades reflect achievement against set standards rather than comparison with other students.

CBSE Grading System (India)

The Central Board of Secondary Education in India uses a 10-point GPA scale with grades A1 through E. A1 (91-100%) carries 10 grade points. This system reduces mark differentiation and focuses on broader achievement bands to reduce student stress.

Tips for Understanding Your Grades

Know your grading scale

Different schools and programs use different scales. Always confirm which system applies to your situation before interpreting grades.

Focus on improvement, not just the grade

A grade shows where you are now, not where you can be. Use feedback to identify areas for growth.

Calculate what you need

Use this converter to figure out what score you need on remaining assignments to reach your target grade.

Understand weighted grades

Some courses weight different assignments differently. A test might count more than homework. Factor this into your planning.

Frequently Asked Questions

How do I convert my percentage to a letter grade?

Enter your marks and the maximum possible marks in this calculator. Select your grading scale (Standard, IB, Cambridge, or CBSE). The tool calculates your percentage and shows the corresponding letter grade, grade point, and performance status.

What is a passing grade in the US system?

In most US schools, a D (60-69%) is the minimum passing grade, though some programs require a C (70%+) to pass. Graduate programs often require a B (80%+) average. Check your specific program requirements, as policies vary.

How does GPA conversion work?

Each letter grade corresponds to a grade point on a 4.0 scale. A = 4.0, B = 3.0, C = 2.0, D = 1.0, F = 0.0. Plus grades add 0.3, minus grades subtract 0.3. Your GPA is the average of all your grade points, weighted by course credits.

What grade do I need for an A?

In the standard US system, you need 93% or higher for an A. Some schools use 90% as the A threshold. For an A-, you typically need 90-92%. Check your syllabus for your school's specific grade boundaries.

Can I use this for weighted grades?

This calculator converts raw marks to grades. For weighted grades, first calculate your weighted percentage. For example, if a test worth 60% of your grade scored 85%, that contributes 0.6 × 85 = 51 percentage points to your final grade.

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