Percentages, ratios, and general-purpose math utilities. Explore 13 free online utility tools.
Calculate percentages fast: find X% of a number, work out percentage increase or decrease, or reverse a percentage back to its original value.
Calculate your GPA on a 4.0 scale, convert letter grades automatically, and track semester versus cumulative GPA in seconds.
Find the mean, median, mode, range, and standard deviation of any list of numbers with this average calculator.
Add, subtract, multiply, or divide fractions and mixed numbers with this fraction calculator, complete with step-by-step solutions.
Find the LCM and HCF (GCD) of two or more numbers, with full prime factorization steps shown for each result.
Calculate sample or population standard deviation, variance, mean, and range for any data set, with every step shown.
Solve missing ratio values, simplify ratios to their lowest terms, scale aspect ratios like 16:9, or split an amount by ratio.
Convert CGPA to percentage for CBSE, AICTE/VTU, Mumbai University, and other grading systems, with support for semester-wise SGPA.
Calculate your weighted course grade, find the final exam score you need for a target grade, and convert marks to letter grades.
Calculate your class attendance percentage, see how many classes you can safely miss, and find classes needed to clear a 75% shortage.
Calculate percentage increase or decrease between two numbers, find the amount after a raise or discount, or work backward to the original value.
Calculate exam percentage from marks scored, build a multi-subject marksheet, or find the marks you need for a target percentage.
Simplify math challenges, solve equations, and compute percentage variations step-by-step. Our educational tools explain the underlying math, making them perfect for students, teachers, and professionals.
Choose from percentage, fraction, ratio, geometry, or algebraic calculators.
Fill in the structured fields, select variables, or input dimensions for geometry.
Review the output value and scroll down to read the step-by-step formula breakdown.
We don't just give the answer; we display the mathematical steps and formulas for classroom learning.
Dynamic charts and visual diagrams display ratio partitions and percentage values clearly.
Uses highly precise floating-point algorithms to prevent rounding errors on large calculations.
Free from distracting ads, popups, and registration requests to keep learning focused.
Standard calculators require you to remember percentage rules or fraction ratios manually. Our tools guide you step-by-step with structured inputs for margin/markup, ratios, and percentages, returning complete breakdowns instantly.
Yes, all calculations are designed mobile-first with large inputs, clean sliders, and responsive layouts for easy math on the go.
We use standard percentage formulas: Increase = ((New Value - Original Value) / Original Value) * 100, and show step-by-step math so you can learn the calculation.
Yes, our education math tools provide clear explanations, dynamic visualizations, and easy input adjustments, making them perfect classroom resources.
Yes, our suite includes calculators for solving ratios, fractions, area, volume, and standard algebraic formulas.
Yes. All conversions evaluate numbers using double-precision floats and map values back to exact fractional ratios where mathematically possible.
Currently, our math tools focus on core algebraic, arithmetic, and geometric utilities, but we regularly add advanced tools based on user request.
Yes. Step-by-step guides, formulas, and math logs are displayed beneath outputs to explain how the result was computed.
All calculations are completed directly inside your browser. No personal parameters or details are ever stored or processed on our servers.
CBSE, VTU, Anna University and generic 10-point scales all convert CGPA to percentage differently. Here is the exact formula for each, with worked examples.
SGPA measures one semester; CGPA measures your entire academic record. Here is the exact credit-weighted formula for both, with a multi-semester example.
Applying abroad with an Indian CGPA? Here is how the US 4.0 GPA scale works and how to convert your Indian marks so admissions officers understand them.
LCM and HCF are two of the most tested concepts in school maths. Learn the prime factorization method, the fast division shortcut, and where these numbers actually show up in real life.
