Education
Graphing and scientific calculators, math help and explanations for school and study.
16 calculators
Education
Math Help
Stuck on a problem? Here you will find explanations that go beyond the answer. Every calculator on this site shows the formula, the steps and the common mistakes, so next time you can work it out yourself.
Graphing Calculator
Plot mathematical functions right in your browser. Type a function like x^2 or sin(x), add more to compare them, and drag or zoom to explore the graph.
Scientific Calculator
A complete scientific calculator, right in your browser. Work with trigonometry, logarithms, powers, roots and factorials โ no install, no cost.
Weighted Grade Average Calculator
In a weighted average, not every test counts equally: an exam might weigh twice as much as a quiz. Enter the grades and their weights to find the true average.
Final Grade Calculator
Part of your final grade is already fixed, but a test, assignment or exam is still coming. Enter your current average, the percentage already fixed, and your goal to see what grade you still need.
Score to Grade Calculator
Dutch schools often use a fixed model to convert a test score into a grade between 1 and 10. Enter your points and the maximum points to see your grade.
Points Needed for a Grade
If you know how many points a test is worth and what grade you want, you can calculate in advance the minimum score you need, instead of working out your grade afterwards.
Reading Time Calculator
From a textbook to an article: word count and your reading speed together determine how long reading takes. Enter both to get a realistic estimate.
Typing Speed Calculator
Typing speed is expressed in words per minute (WPM), but errors count against you. Enter how many words you typed, in how much time, and with how many errors to see your true speed.
Words to Pages Calculator
For an essay, paper or thesis it helps to know in advance how many pages your text will be. The formatting โ double- or single-spaced โ makes a big difference.
Study Hours Calculator
A credit (EC or ECTS) officially represents a fixed amount of study time, including lectures, self-study and exams. With that figure you can calculate how many hours per week a course realistically demands.
Exam Countdown Calculator
Enter the date of your exam or test to see how many days and weeks you have left to prepare. Useful for making your study plan realistic.
Cumulative GPA Calculator
Your cumulative average combines all credits earned so far, not just the latest period. Enter your previous average and the new results to see the updated total.
Number Base Converter
Computers work internally in binary, and programmers often use hexadecimal notation. Enter an ordinary decimal number to see it instantly in all three systems.
Roman Numeral Converter
Roman numerals still show up on clocks, in film credits and for numbering chapters. Enter a number between 1 and 3999 to see its Roman form.
Grade to US GPA Converter
When applying to a university abroad, a GPA is often requested. There is no legally fixed conversion, but this calculator gives an indicative value based on a linear scale mapping.