Student
Percentage Calculator
Turn marks into a percentage, or find what X% of Y equals.
Percentage
Your percentage
87.00%
435 out of 500
Marks lost65.00
For estimation purposes only — not financial, medical, or professional advice.
How to use this calculator
- 1Pick a mode: marks percentage, or X% of Y.
- 2Enter your two numbers in the input fields.
- 3The percentage result appears immediately with no submit button.
How it's calculated
Marks mode: percentage = (marks obtained / total marks) x 100.
Percent-of mode: result = (X / 100) x Y, so 15% of 240 is 0.15 x 240 = 36.
Division by zero is guarded, so an empty or zero total simply shows no result.
Percentage Calculator FAQs
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