Percentage Calculator

🎓 Calculate marks percentage, exam scores & percentages instantly — percent of a number, percentage change, add or subtract %, reverse percentage & more.

✅ 100% Free🔓 No Login Required⚡ 7 Calculator Modes

Instant Results

Step-by-Step Workings

Calculation History

Choose Calculator Mode

Calculate marks percentage for exams, tests & assignments

Enter Values

Marks Obtained

Total Marks

Result

Enter values and click Calculate

🔧 How It Works

Seven powerful percentage calculators with full step-by-step workings

Choose Calculator Type

Select from 7 calculator modes including Marks Percentage, % Change, Add/Subtract %, Reverse % & more

Enter Your Numbers

Input your values and let the calculator do the math instantly with step-by-step workings

Get Instant Results

See the answer, formula, and full step-by-step solution — copy or download your history

Frequently Asked Questions

Everything you need to know about percentage calculations

Do I need to sign up or log in to use this tool?

No. All QuickTextTools are completely free to use online with no login, signup, or account required.

How do I calculate my exam marks percentage?

Enter the marks you obtained and the total marks. The calculator instantly computes your marks percentage using the formula: (Obtained Marks ÷ Total Marks) × 100.

Can students use this marks percentage calculator for school and college exams?

Yes. This calculator is specially designed for school students, college students, competitive exam preparation, assignments, tests, semester results, and academic score calculations.

Does this calculator show grades along with percentage?

Yes. Along with percentage, the tool also estimates your academic grade and performance level instantly.

How do I calculate what percentage one number is of another?

Use the 'X is ?% of Y' mode. Enter the part value as X and the total as Y. The calculator divides X by Y and multiplies by 100 to give you the percentage.

How do I calculate percentage increase or decrease?

Use the '% Change' mode. Enter the original value and the new value. The calculator computes the percentage change and tells you whether it is an increase or decrease.

How do I add or remove a percentage from a number?

Use 'Add %' to increase a number by a percentage (e.g. adding 10% VAT) or 'Subtract %' to reduce it (e.g. applying a 20% discount). Enter the percentage and the original number.

What is reverse percentage calculation?

Reverse percentage finds the original whole number when you know a part and its percentage. For example, if 80 is 20% of a number, the reverse calculator finds that number is 400.

Are the calculations shown step by step?

Yes. Every calculation shows the full formula and step-by-step working so you can understand exactly how the answer was reached — useful for students, teachers, and professionals.