Percentage Calculator for Students

Three modes in one field: X percent of Y, X as a percent of Y, percent change between X and Y.

For the parts of student life that involve running numbers or hitting word limits: grade percentages, due dates, age gaps for group work, BMI for a health class, length checks against an assignment brief, and the formatting the rubric actually penalizes for. None of it leaves your device until you paste the answer in.

Open the Percentage Calculator →

What it does for Students working on assignments and problem sets

How to use it

  1. Pick the mode that matches the problem. The fields relabel themselves - you do not have to remember which number is which.
  2. Type the two values you know. The answer updates as you type.
  3. Copy the result into your scratch paper, your calculator app, or your answer sheet.

Other tools Students reach for

Date CalculatorAdd or subtract days, weeks, months or years from a date; or count the gap between two datAge CalculatorExact age in years, months, days from a date of birth, with next-birthday countdown and zoBMI CalculatorBody Mass Index from height and weight, with metric / imperial units and a note on what BMWord CounterWord count, character count, sentence count and reading time for the rubric in front of yoLorem Ipsum GeneratorPlaceholder paragraphs for layout work and last-minute template fills.Case ConverterTitle Case, sentence case, all-caps or all-lower - in one click.AI SummarizerGist a chapter, a paper or an article before you decide whether it is worth a slow read.

Common questions

How do I work out the mark I need on the final exam?

Take the grade you want, subtract what the coursework has already earned, and divide by the weight the final carries. The answer is often surprising when the final is worth only a small share, and impossible when the remaining weight cannot close the gap - useful to know before the revision weeks rather than after.

How do I average a course where the assessments carry different weights?

Multiply each mark by its weight, add those products and divide by the total weight - do not average the marks themselves. Check that the weights in the syllabus add up to 100 per cent; a missing component is the usual explanation for a mark that does not match your own arithmetic.

What is the difference between a percentage and a percentage point?

A move from 60 to 66 per cent is six percentage points but a ten per cent relative increase. The two get mixed up constantly in grade discussions and in the feedback on them, so say which one you mean when you query a mark.