Percentage calculations come up everywhere — exam marks, sale discounts, GST, salary hikes, interest rates. Our free percentage calculator includes 6 different calculation types on one page, all updating in real time as you type.
6 Calculators in One
- What is X% of Y? — The most common percentage calculation
- X is what % of Y? — Find the percentage one number is of another
- Percentage Change — Calculate increase or decrease between two values
- Discount Calculator — Enter original price and discount % to get sale price and savings
- GST Calculator — Add GST at 5%, 12%, 18% or 28% to any amount
- Marks Percentage — Enter marks obtained and total marks, get % and grade (A+, A, B+, B, C, F)
Each calculator also shows a step-by-step explanation of the formula used — so students can understand the maths behind the result, not just get the answer.
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