Free Education Calculators & Tools
Simple, exact calculators for students and parents — every result comes from a stated formula, never a guess or an estimate.
Student & Admission Tools
Age Calculator for School Admission
Find a child's exact age (years, months, days) as on any admission cut-off date.
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CGPA to Percentage Calculator
Convert CGPA to percentage and back — CBSE 10-point scale, or any custom GPA scale.
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Attendance Percentage Calculator
Check your current attendance %, and how many classes you can skip — or must attend — to hit a target.
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Marks Percentage & Grade Calculator
Calculate percentage from marks obtained, with the equivalent CBSE 9-point grade.
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Exam Countdown Calculator
Count the exact days left until any exam date you enter.
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Finance Tools
Physics Calculators
Speed, Distance & Time Calculator
Find speed, distance or time from the other two, using Distance = Speed × Time.
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Ohm's Law Calculator
Find voltage, current or resistance from the other two, using V = I × R.
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Force Calculator (Newton's Second Law)
Find force, mass or acceleration from the other two, using F = m × a.
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Density Calculator
Find mass, density or volume from the other two, using Mass = Density × Volume.
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Chemistry Calculators
Molarity Calculator
Find moles of solute, molarity or volume from the other two, using n = M × V.
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Mole Calculator
Convert between mass, moles and molar mass, using Mass = Moles × Molar Mass.
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pH Calculator
Convert between pH, pOH and hydrogen ion concentration for an aqueous solution.
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Dilution Calculator (C₁V₁ = C₂V₂)
Find any one of initial/final concentration and volume from the other three.
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Math Calculators
Quadratic Equation Solver
Solve ax² + bx + c = 0 for real or complex roots, using the quadratic formula.
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LCM & HCF Calculator
Find the Highest Common Factor and Lowest Common Multiple of two numbers.
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Mean, Median & Mode Calculator
Calculate the mean, median, mode and range of any list of numbers.
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Simple & Compound Interest Calculator
Compare simple and compound interest on the same principal, rate and time period.
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