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KazamTools

Math & Education Calculators

Quick answers with the working shown, so you can check the result and learn the method.

Area CalculatorFind the area of nine common shapes in any unit, with the formula worked out.CalculatorA clean standard calculator that works with your keyboard and remembers your last answers.CGPA CalculatorSemester SGPAs to CGPA, then CGPA to percentage using your board’s or university’s own rule.Fraction CalculatorFractions and mixed numbers, simplified, with the working shown step by step.GPA CalculatorSemester, cumulative and weighted GPA on the 4.0 scale, with every step shown.Grade CalculatorYour weighted course grade, and the score you need on the final for the grade you want.Long Division CalculatorEvery step of long division written out, with the remainder, the decimal answer and a check.Percentage CalculatorFour percentage calculations in one place, with the working shown.Percentage Increase CalculatorPercentage increase and decrease, reverse percentages and average growth, with the working shown.Scientific CalculatorA full scientific calculator that works with your keyboard and remembers your last answers.Slope CalculatorSlope, angle, distance and the equation of the line from two points, with every step shown.Standard Deviation CalculatorPaste a list of numbers and see the spread, step by step.

Guides

Math and school calculators with the steps shown

Get the answer and see how it was reached. The percentage calculator covers percent of a number, percent change and increases; the GPA calculator and CGPA calculator handle weighted grades and conversions; and the grade calculator tells you what you need on a final exam.

Each tool shows its formula so students can check their own working, and teachers can use the pages as quick references.

Frequently asked questions

Can I see the working, not just the answer?

Yes. Every calculator shows its formula and the numbers used, so you can follow each step.

Do the GPA tools support weighted grades?

Yes. You can add credits and honors or AP weighting, and convert between common grading scales.

Are the tools free for classroom use?

Yes. Everything is free and there is no sign-up.

Do they work offline?

Once a page has loaded, the calculations run in your browser without contacting a server.