School Calculators
Made Simple
Quick, accurate calculators for admissions, marks, age eligibility, and school fee planning — all in one place.
- Calculators
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Free Tools for Parents & Students
All calculators
125 calculators
- Grade / GPA / CGPA Conversion
% To CGPA CBSE calculator
Convert your CBSE percentage to CGPA using the official CBSE formula (Percentage ÷ 9.5).
- Matrices / Vectors / Advanced Math
2×2 matrix multiplication calculator
Multiply two 2×2 matrices with full dot-product working shown for each cell.
- Board & Exam Scores
10th percentage calculator
Try the 10th percentage calculator to evaluate your class 10 board exam score totals and best-of-five performance. Check your results today.
- Board & Exam Scores
10th percentage calculator (State Board)
Use the 10th percentage calculator state board tool to determine your secondary school exam marks instantly. Find your official grades now.
- Attendance & Study Productivity
75% attendance calculator
Utilize the 75 attendance calculator to find out exactly how many upcoming lectures you can safely skip. Check your classroom thresholds free.
- Board & Exam Scores
A Level grade calculator
Open the a level grade calculator to predict final subject scores using your raw uniform mark scale points. Check your university status now.
- Core Arithmetic
Adding and subtracting integers calculator
Discover the adding and subtracting integers calculator to solve math lines with signed numbers. Check step-by-step homework answers free.
- Core Arithmetic
Addition calculator
Add two or more numbers instantly with step-by-step column method and real-time results.
- Admission / Age Eligibility
Age limit calculator
Enter your child's date of birth to see which grade they're eligible for — Nursery through Class 1 — under current NEP 2020 age guidelines.
- Attendance & Study Productivity
Attendance calculator
Check your attendance percentage and find out exactly how many classes you need to attend — or can afford to miss — to hit your target.
- Grade / GPA / CGPA Conversion
Average CGPA calculator
Calculate your average CGPA across multiple semesters with optional credit-hour weighting.
- Number Systems / Computing
BCD addition calculator
Add decimals and display Binary Coded Decimal (BCD-8421) encoding.
- Core Arithmetic
Big number calculator
Perform exact arithmetic on very large integers beyond standard floating-point limits using JavaScript BigInt.
- Number Systems / Computing
Binary addition calculator
Add binary numbers with carry-over and decimal/hex cross-reference.
- Number Systems / Computing
Binary calculator
Add, subtract, multiply or divide binary numbers with decimal equivalents and step-by-step conversion.
- Number Systems / Computing
Binary multiplication calculator
Multiply binary (base-2) numbers with step-by-step partial products and decimal verification.
- Number Systems / Computing
Binary subtraction calculator
Subtract two binary numbers using two's complement method with full step-by-step working.
- Number Systems / Computing
Bitwise calculator
Perform AND, OR, XOR, NOT and bit-shift operations on integers with binary output.
- Number Systems / Computing
Bitwise operator calculator
Compute AND, OR, XOR, NOT, left shift and right shift bitwise operations on integers with binary view.
- Grade / GPA / CGPA Conversion
CBSE CGPA to percentage calculator
Convert CBSE CGPA (Class 10) to percentage using the official CBSE formula.
- Board & Exam Scores
CBSE Class 12 percentage calculator
Enter your marks in all 6 subjects. We'll calculate your percentage using the Best of 5 rule as per CBSE guidelines.
- Board & Exam Scores
CBSE cutoff calculator
Check if your CBSE Class 12 marks meet the cutoff for popular courses.
- Grade / GPA / CGPA Conversion
CBSE GPA calculator
Calculate your CBSE GPA from subject grades using the official CBSE grading scale.
- Grade / GPA / CGPA Conversion
CBSE grade system calculator
Look up CBSE grades, grade points, and remarks for any marks or percentage.
- Board & Exam Scores
CBSE marks to percentage calculator
Calculate your CBSE Class 10 or 12 percentage using the Best-of-5 rule. Auto-drops your lowest subject and shows your overall grade.
- Board & Exam Scores
CBSE passing marks calculator
Enter your theory and internal assessment marks subject by subject for Class 10 or Class 12. Instantly see whether you have passed each component, your overall result, and your CGPA.
- Board & Exam Scores
CBSE result readiness checker
Check if your Class 10 or Class 12 result is live and confirm you have everything ready to access it instantly.
- Board & Exam Scores
CBSE revaluation fee calculator
Estimate your total revaluation fees across photocopy, marks verification and revaluation stages — based on 2026 CBSE rates.
- Board & Exam Scores
CBSE roll number finder
Lost your admit card? Retrieve your Class 10 or Class 12 CBSE roll number through the official board portal in a few steps.
- Grade / GPA / CGPA Conversion
CGPA calculator
Try the cgpa calculator to instantly compute your cumulative grade point average online. Check your official semester scores right now.
- Grade / GPA / CGPA Conversion
CGPA to GPA calculator
Convert your CGPA (10-point scale) to a 4-point GPA scale for international applications.
- Grade / GPA / CGPA Conversion
CGPA to percentage calculator
Convert your CGPA (on a 10-point scale) to percentage using the standard formula.
- Finance
Child education plan calculator
Plan ahead so every learner finds their path. Estimate tomorrow's education costs and what to save today — in INR or USD.
- Time / Date / Measurement
Days between dates calculator
Find the exact number of days, weeks, months and years between any two dates.
- Core Arithmetic
Decimal addition calculator
Add decimal numbers with aligned column method and automatic precision.
- Number Systems / Computing
Decimal to floating point converter
Convert a decimal number to its IEEE 754 single-precision (32-bit) binary floating-point representation.
- Number Systems / Computing
Decimal to octal calculator
Convert decimal (base-10) numbers to octal (base-8) using the repeated division method.
- Matrices / Vectors / Advanced Math
Determinant calculator
Calculate the determinant of a 2x2 or 3x3 matrix with cofactor expansion steps shown.
- Matrices / Vectors / Advanced Math
Elliptic curve point addition calculator
Compute P+Q on an elliptic curve y²=x³+ax+b mod p using modular arithmetic.
- Algebra / Number Theory
Exponent calculator
Calculate any base raised to any power, including negative and fractional exponents.
- Algebra / Number Theory
Factor calculator
Find all factors of any positive integer, check if it is prime, and show prime factorisation.
- Time / Date / Measurement
Feet & inches addition calculator
Add measurements in feet and inches with automatic carry-over and metric conversion.
- Number Systems / Computing
Floating point calculator
Perform arithmetic on floating-point numbers and inspect precision and rounding behaviour.
- Number Systems / Computing
Floating point to decimal converter
Convert an IEEE 754 32-bit single-precision binary string to its decimal value.
- Fractions / Percentages / Ratios
Fraction addition calculator
Add fractions using the LCD (Least Common Denominator) method.
- Fractions / Percentages / Ratios
Fraction calculator
Add, subtract, multiply or divide two fractions with simplified result.
- Fractions / Percentages / Ratios
Fraction multiplication calculator
Multiply fractions and mixed numbers with automatic GCD simplification.
- Board & Exam Scores
GATE score calculator
Estimate your GATE score from raw marks using the official normalization formula.
- Board & Exam Scores
GCSE score calculator
Add your GCSE subjects, pick each grade on the 9–1 scale, and instantly see your average grade, total points, and how many subjects you've passed against your target.
- Grade / GPA / CGPA Conversion
GPA calculator
Calculate your semester or cumulative GPA from course grades and credit hours.
- Grade / GPA / CGPA Conversion
GPA to percentage calculator
Convert your GPA (4.0 or 10-point scale) to a percentage using standard conversion formulas.
- Admission / Age Eligibility
Grade eligibility calculator
Find the right grade for your child based on their date of birth. Instantly check admission eligibility for the upcoming academic session — from Nursery to Grade 12.
- Grade / GPA / CGPA Conversion
Grade percentage calculator
Enter marks per subject to get per-subject grades and overall percentage instantly.
- Algebra / Number Theory
Greatest common factor calculator
Find the GCF (HCF / GCD) of two or more integers using the Euclidean algorithm.
- Scientific / Physics / Applied
Half-life calculator
Calculate remaining quantity after radioactive decay or solve for the half-life from given amounts.
- Number Systems / Computing
Hex calculator
Perform addition, subtraction, multiplication and division on hexadecimal numbers with decimal equivalents.
- Number Systems / Computing
Hex to binary calculator
Convert hexadecimal numbers to binary and decimal with nibble-by-nibble working.
- Number Systems / Computing
Hexadecimal addition calculator
Add hexadecimal numbers with decimal and binary output.
- Grade / GPA / CGPA Conversion
High school GPA calculator
Calculate your weighted or unweighted high school GPA on a 4.0 scale.
- Time / Date / Measurement
Hours addition calculator
Add decimal hours and get total with hours/minutes/seconds breakdown.
- Board & Exam Scores
IB points calculator
Calculate your International Baccalaureate (IB) Diploma total points from subject grades and bonus points.
- Board & Exam Scores
ICSE percentage calculator
Calculate your ICSE board percentage from marks in 5 or 6 subjects.
- Number Systems / Computing
IEEE 754 calculator
Convert decimal numbers to IEEE 754 single (32-bit) and double (64-bit) binary representation.
- Board & Exam Scores
IELTS score calculator
Calculate your IELTS overall band score from Listening, Reading, Writing and Speaking bands.
- Board & Exam Scores
IGCSE grade calculator
Calculate your overall IGCSE grade across multiple subjects.
- Grade / GPA / CGPA Conversion
IGCSE grades to GPA converter
Convert your IGCSE grades to a US GPA (4.0 scale) for university applications.
- Board & Exam Scores
IGCSE score calculator
Calculate your IGCSE percentage and predicted grade from component marks.
- Algebra / Number Theory
Indices calculator
Apply index laws to simplify expressions: multiply, divide, power of a power, and negative indices.
- Core Arithmetic
Integer addition calculator
Add signed positive and negative integers with expression display.
- Core Arithmetic
Integer division calculator
Divide integers and get the quotient, remainder, and full long division working.
- Core Arithmetic
Integer multiplication calculator
Multiply positive and negative integers instantly with sign rules clearly explained.
- Board & Exam Scores
JEE Advanced score calculator
Estimate your JEE Advanced total score from Physics, Chemistry and Mathematics marks.
- Algebra / Number Theory
Least common multiple calculator
Find the LCM of two or more integers using prime factorisation with step-by-step working.
- Admission / Age Eligibility
LKG age eligibility calculator
Find out if your child is ready for LKG admission and which grade they qualify for — based on the June 1 cut-off per NEP 2020 guidelines.
- Admission / Age Eligibility
LKG age limit for admission
Everything parents need to know — minimum age, cut-off dates by state, and an instant eligibility checker for LKG, UKG & Grade 1.
- Algebra / Number Theory
Log calculator
Calculate logarithms in any base, including natural log (ln) and log base 10 (log10).
- Core Arithmetic
Long addition calculator
Column method (long addition) for multiple numbers with step-by-step breakdown.
- Core Arithmetic
Long multiplication calculator
Multiply any two numbers step-by-step using the long multiplication method with partial products.
- Core Arithmetic
Long subtraction calculator
Perform long subtraction (column method) with borrowing shown digit by digit.
- Grade / GPA / CGPA Conversion
Marks percentage calculator
Convert your marks obtained into a percentage instantly. Supports single and multiple subjects.
- Grade / GPA / CGPA Conversion
Marks to CGPA calculator
Convert your total marks to CGPA on a 10-point scale using standard conversion.
- Grade / GPA / CGPA Conversion
Marks vs percentile calculator
Convert marks to percentile or percentile to marks using linear approximation.
- Core Arithmetic
Mathematical calculator
Evaluate mathematical expressions including order of operations (BODMAS/PEDMAS) with step-by-step notes.
- Matrices / Vectors / Advanced Math
Matrix addition calculator
Try the matrix addition calculator to add dimensional arrays together row by row with detailed steps. Solve your linear algebra equations now.
- Board & Exam Scores
Negative marking calculator
Run the negative marking calculator to determine final test scores after deducting penalties for incorrect answers. Check your real ranks.
- Number Systems / Computing
Octal addition calculator
Add octal (base-8) numbers with decimal and binary output.
- Number Systems / Computing
Octal to decimal calculator
Convert octal (base-8) numbers to decimal (base-10) with step-by-step positional working.
- Matrices / Vectors / Advanced Math
Orthogonal vector calculator
Check if two vectors are orthogonal via dot product and compute the orthogonal projection.
- Board & Exam Scores
Passing marks calculator
Check if you've passed a subject under the latest 2026 board rules. Works for Class 10 and Class 12, across all mark splits.
- Fractions / Percentages / Ratios
Percent error calculator
Calculate the percentage error between an experimental (measured) value and the true (accepted) value.
- Core Arithmetic
Percentage addition calculator
Add a percentage increase to a base value, or sum two percentages directly — instant results.
- Fractions / Percentages / Ratios
Percentage increase calculator
Calculate percentage increase or decrease between two values.
- Grade / GPA / CGPA Conversion
Percentage to CGPA calculator
Convert your percentage back to CGPA using the standard or custom formula.
- Statistics / Probability
Permutation and combination calculator
Calculate nPr (permutations) and nCr (combinations) with factorial working shown.
- Attendance & Study Productivity
Pomodoro Timer
Stay focused with the Pomodoro technique — 25-minute work sessions with 5-minute breaks.
- Admission / Age Eligibility
Preschool readiness age calculator
Find out if your child is at the right age to start preschool and what readiness signs to look for.
- Algebra / Number Theory
Prime number calculator
Check if a number is prime, find all prime factors, and list primes in a range.
- Algebra / Number Theory
Quadratic formula calculator
Solve quadratic equations ax²+bx+c=0 using the quadratic formula with discriminant analysis.
- Statistics / Probability
Range calculator
Find the range, minimum, maximum, and midrange of a data set.
- Fractions / Percentages / Ratios
Ratio calculator
Simplify ratios, find equivalent ratios, and solve for a missing value in a proportion.
- Algebra / Number Theory
Rational algebraic expressions calculator
Addition and subtraction of rational algebraic expressions using LCD method.
- Algebra / Number Theory
Rational number calculator
Add, subtract, multiply and divide rational numbers (p/q) with automatic simplification.
- Attendance & Study Productivity
Reading speed calculator
Calculate your reading speed in words per minute (WPM) and find out how long it takes to read any document.
- Misc / Utility
Roman numeral calculator
Convert between Roman numerals and integers (1–3999) and perform addition in Roman notation.
- Algebra / Number Theory
Root calculator
Calculate square roots, cube roots, and any nth root of a number.
- Fractions / Percentages / Ratios
Rounding calculator
Round numbers to any decimal place or significant figures using standard rounding rules.
- Admission / Age Eligibility
RTE admission age calculator
Check your child's eligibility for admission under RTE Act 2009 (Section 12(1)(c)) — state-wise cutoff dates included.
- Admission / Age Eligibility
School admission age calculator
Check if your child meets the age criteria for Nursery, LKG, UKG, or Class 1 admission — based on NEP 2020 and CBSE guidelines.
- Scientific / Physics / Applied
Scientific calculator
Full-featured scientific calculator with trigonometry, logarithms, powers, and memory functions.
- Scientific / Physics / Applied
Scientific notation calculator
Convert numbers to/from scientific notation and multiply or divide in standard form.
- Grade / GPA / CGPA Conversion
SGPA to CGPA calculator
Calculate your CGPA from multiple semester SGPA values using the weighted average method.
- Grade / GPA / CGPA Conversion
SGPA to percentage calculator
Convert your SGPA to an approximate percentage using the standard university formula.
- Scientific / Physics / Applied
Speed distance time calculator
Discover the speed distance time calculator to compute travel rates and intervals instantly using physics formulas. Check your metrics free.
- Algebra / Number Theory
Square root calculator
Find square roots, cube roots and nth roots of any number with step-by-step output.
- Board & Exam Scores
SSC marks calculator
Calculate total marks, percentage, and grade for SSC (Class 10) exams across major Indian boards.
- Board & Exam Scores
SSLC percentage calculator
Calculate your SSLC (Class 10 State Board) percentage from marks across all subjects.
- Statistics / Probability
Standard deviation calculator
Calculate population and sample standard deviation, variance, mean, and median for any data set.
- Statistics / Probability
Statistics calculator
Calculate mean, median, mode, range, variance, and standard deviation for any data set.
- Core Arithmetic
Step by step subtraction calculator
Subtract two numbers using the column method with each step explained digit by digit.
- Time / Date / Measurement
Subtract time calculator
Subtract one time duration from another in hours, minutes, and seconds.
- Core Arithmetic
Subtraction calculator
Subtract two numbers including decimals and negatives with step-by-step working.
- Time / Date / Measurement
Time addition calculator
Add hours, minutes and seconds with automatic carry-over.
- Grade / GPA / CGPA Conversion
Two percentage calculator
Calculate and compare two percentages — find what percent A is of B, or compare two values.
- Board & Exam Scores
UPSC marks calculator
Calculate your UPSC Mains total score from Paper I–VII marks and interview.
- Statistics / Probability
Z-score calculator
Calculate the z-score (standard score) and find the probability using the standard normal distribution.
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