Grade Calculator - Complete Guide

Learn how to calculate weighted grades with letter and number grade support

Need to calculate your weighted average grade? Our free grade calculator tool makes it easy to determine your overall grade by entering assignments, exams, and their respective weights. Whether you're a student tracking your progress or planning what grades you need, calculating weighted grades helps you understand your academic standing.

Our grade calculator supports both numerical grades (like 90, 85, 92) and letter grades (like A, B+, C-), automatically converting them for accurate calculations. The tool also includes a Final Grade Planning feature that shows you what grade you need on remaining assignments to reach your goal. The calculator works entirely in your browser, ensuring your data stays private.

In this guide, you'll learn how to use the grade calculator effectively, understand weighted grade calculations, and discover tips for getting accurate results. We'll also cover how to use the Final Grade Planning feature to set and achieve your academic goals.

How It Works

Our grade calculator uses weighted average calculation to determine your overall grade. Each assignment's grade is multiplied by its weight percentage, and all weighted points are summed together. The total is then divided by the sum of all weights to get your final weighted average grade.

The calculator automatically converts letter grades to their numerical equivalents using a standard grading scale. For example, an A+ converts to 97, an A to 93, a B+ to 87, and so on. This allows you to mix letter and number grades in your calculations seamlessly.

All calculations happen instantly in your browser as you enter data. The tool displays your current weighted average, letter grade equivalent, and a breakdown table showing how each assignment contributes to your final grade. The Final Grade Planning feature uses your current average to calculate what you need on remaining work to reach your goal.

Step-by-Step Guide: How to Calculate Your Weighted Grade

  1. Step 1: Access the Tool

    Navigate to our Grade Calculator page. The tool loads instantly in your browser with no installation required.

  2. Step 2: Enter Assignment Information

    For each assignment or exam, enter the assignment name (optional), grade, and weight percentage. You can use either numerical grades (like 90, 85.5) or letter grades (like A, B+, C-).

    Supported letter grades include: A+, A, A-, B+, B, B-, C+, C, C-, D+, D, D-, and F. The calculator automatically converts these to their numerical equivalents for calculation.

  3. Step 3: Add More Assignments

    Click the "Add More Rows" button to add additional assignments. You can add as many assignments as you need. To remove an assignment, click the X button in the Action column.

    Make sure to enter all your completed assignments with their grades and weights. The calculator will only include assignments with valid grades and weights in the calculation.

  4. Step 4: Review Your Results

    Once you've entered your assignments, the calculator automatically displays your results. You'll see your weighted average grade as a percentage, the equivalent letter grade, and the total weight percentage you've used.

    The breakdown table shows each assignment's contribution to your final grade, including the weighted points for each. This helps you understand how each assignment affects your overall grade.

  5. Step 5: Use Final Grade Planning (Optional)

    To calculate what grade you need on remaining assignments, enter your goal grade and the weight percentage of remaining work in the Final Grade Planning section.

    The calculator will show you the required grade (both numerical and letter) you need to achieve on the remaining work to reach your goal. This helps you plan and set realistic targets for upcoming assignments.

Understanding Letter Grade Conversion

Our grade calculator uses a standard letter grade conversion scale. Here's how letter grades are converted to numerical values:

A Grades

  • A+ = 97%
  • A = 93%
  • A- = 90%

B Grades

  • B+ = 87%
  • B = 83%
  • B- = 80%

C Grades

  • C+ = 77%
  • C = 73%
  • C- = 70%

D Grades & F

  • D+ = 67%
  • D = 63%
  • D- = 60%
  • F = 50%

You can mix letter grades and numerical grades in your calculations. The calculator automatically handles the conversion and calculates your weighted average accurately.

Tips for Best Results

  • Enter all completed assignments: Make sure to include all assignments, exams, and graded work you've completed. Missing assignments will result in an inaccurate average.
  • Check weight percentages: Ensure your weight percentages match your course syllabus. The total weight should typically add up to 100% for all assignments in the course.
  • Use consistent grade format: You can mix letter and number grades, but make sure each grade is entered correctly. Letter grades are case-insensitive (A, a, A+ all work).
  • Review the breakdown: Check the breakdown table to verify each assignment is calculated correctly. This helps you catch any data entry errors.
  • Use Final Grade Planning: Use the Final Grade Planning feature to set realistic goals and understand what grades you need on remaining work to achieve your target.

Understanding Weighted Grades

Weighted grades give different assignments different importance in your final grade. For example, a final exam might be worth 40% of your grade, while homework assignments might be worth 10% each. This means a 90% on the final exam has more impact on your overall grade than a 90% on a homework assignment.

The weighted average calculation ensures that assignments with higher weights contribute more to your final grade. This is different from a simple average, where all assignments count equally regardless of their importance.

Our calculator shows you exactly how each assignment contributes to your final grade through the breakdown table, making it easy to understand which assignments have the most impact on your overall performance.

Benefits of Using Our Grade Calculator

Accurate Calculations

Get precise weighted average calculations with support for both letter and number grades. The calculator handles all the math automatically, reducing errors.

Grade Planning

Use the Final Grade Planning feature to determine what grades you need on remaining assignments to reach your goal. This helps you plan and prioritize your studies.

Flexible Input

Support for both letter grades and numerical grades allows you to enter grades in whatever format you have, making the calculator easy to use.

Detailed Breakdown

See exactly how each assignment contributes to your final grade with the detailed breakdown table. This helps you understand your grade composition.

Common Use Cases

  • Calculating your current course grade based on completed assignments
  • Determining what grade you need on a final exam to achieve your target grade
  • Tracking your progress throughout the semester
  • Planning study priorities based on assignment weights
  • Verifying grade calculations from your instructor
  • Setting realistic goals for remaining assignments

Frequently Asked Questions

How do I calculate my weighted grade for free?

To calculate your weighted grade for free, enter your assignment names (optional), grades (as numbers like 90 or letters like A, B+), and weight percentages in our grade calculator. The tool automatically calculates your weighted average and displays your numerical grade, letter grade, and total weight used.

Can I use letter grades in the calculator?

Yes, our grade calculator supports both letter grades (A+, A, A-, B+, B, B-, C+, C, C-, D+, D, D-, F) and numerical grades (0-100). The tool automatically converts letter grades to their numerical equivalents for calculation.

How does the weighted grade calculation work?

The weighted grade calculator multiplies each grade by its weight percentage, sums all weighted points, and divides by the total weight to get your average grade. For example, if you have a 90% grade worth 30% and an 85% grade worth 70%, your weighted average is (90×30 + 85×70) / 100 = 86.5%.

Is the grade calculator really free?

Yes, our grade calculator is completely free to use with no limits. There are no subscription fees, no credit card required, and you can calculate as many grades as you need. All calculations happen in your browser.

Can I calculate what grade I need on remaining assignments?

Yes, our grade calculator includes a Final Grade Planning section. Enter your goal grade and the weight of remaining assignments, and the calculator will show you what grade you need to achieve on the remaining work to reach your goal.

Ready to Calculate Your Grades?

Try our free Grade Calculator tool now and calculate your weighted average in seconds. No signup required, completely free.

Start Calculating Grades Now