Math calculators
Free math calculators for percentages, fractions, algebra, geometry, statistics, probability, and more. Instant results for students and professionals.
My Time Calculators includes 65 free math calculators covering percentages, fractions, algebra (quadratic equations), geometry (area, volume, Pythagoras), statistics (mean, standard deviation), probability, and more. Each shows the formula and steps.
All math calculators (65)
Percentage
Fast % calculations
Fraction
Simplify & convert
Quadratic equation
Solve ax²+bx+c=0
Pythagoras
Right triangle sides
Area calculator
Shape area & perimeter
Volume
3D shape volume
Mean / Median / Mode
Central tendency
Std deviation
Data spread
Probability
Likelihood of events
Permutations & combos
nPr and nCr
Logarithm
Log & antilog
Number base
Binary, hex, octal
Ratio & proportion
Scale & compare
Matrix (2×2)
Determinant & inverse
Percentage change
Increase or decrease %
GCD & LCM
Greatest divisor, least multiple
Prime checker
Is a number prime?
Factorial
Calculate n!
Scientific notation
Convert to/from sci notation
Slope & line
Slope & equation of a line
Distance between points
2D distance & midpoint
Roman numerals
Convert numbers & numerals
Rounding
Round to decimals or places
Exponent & root
Powers and nth roots
Midpoint
Midpoint of two points
Significant figures
Count & round sig figs
Modulo
Remainder of division
Z-score
Standard score from data
Slope-intercept
y = mx + b from inputs
Lowest common denominator
LCD of fractions
Circle calculator
Area, circumference, radius
Triangle solver
Area, sides & angles
Round to nearest
Nearest 5, 10, 100 …
Weighted average
Average with weights
Percentage of total
Part as % of whole
Combinations & permutations
nCr and nPr counts
Linear equation solver
Solve ax + b = c for x
Long division
Quotient & remainder
Percent off
Price after a % discount
LCM & GCF
Of several numbers
Prime factorization
Break a number into primes
Remainder
Quotient and remainder
Simplify fraction
Reduce to lowest terms
Mixed number converter
Mixed ↔ improper fraction
Decimal to fraction
Convert a decimal to a fraction
Add & subtract fractions
Add, subtract, multiply fractions
Cube root
Cube root of a number
Nth root
Any root of a number
Absolute value
Distance from zero
Quadratic formula
Roots with steps
System of equations
Solve two equations
Distance formula
Distance between two points
Proportion solver
Solve a/b = c/x
Arithmetic sequence
Nth term and sum
Trigonometry
sin, cos, tan of an angle
Right triangle solver
Sides and angles
Rectangle calculator
Area, perimeter, diagonal
Sphere calculator
Volume and surface area
Cylinder calculator
Volume and surface area
Cone calculator
Volume and surface area
Degrees & radians
Convert angle units
Mean, median, mode
Full average set
Variance
Variance of a data set
Percentile
Percentile rank of a value
Odds & probability
Convert odds and chance
Why use our math calculators
Mathematics is a tool, and these calculators sharpen it. From everyday percentages to quadratic equations and standard deviation, each one delivers the answer and shows the formula behind it — so you can check homework, verify a result, or simply get to the number without manual arithmetic. They are built for students, teachers, engineers, and anyone who needs accuracy fast.
A calculator that only spits out a number teaches you nothing. Ours show the underlying formula and intermediate values, so they double as a learning aid. Need the area of a circle, the roots of an equation, or the spread of a dataset? You get the result and the method, reinforcing the concept every time you use it.
How to choose the right calculator
- Select the branch of math you need — arithmetic, algebra, geometry, or statistics.
- Enter your numbers; for lists (like statistics) use comma-separated values.
- Read the main answer plus supporting values such as steps, alternates, or related measures.
- Review the displayed formula to understand exactly how the answer was derived.
Frequently asked questions
Do these calculators show the steps?
Each calculator displays the formula used and several supporting values, so you can follow how the result was reached.
Are they suitable for schoolwork?
Yes. Students and teachers use them to check answers and understand methods across arithmetic, algebra, geometry, and statistics.
Can they handle decimals and negative numbers?
Yes. The calculators accept decimals and, where mathematically valid, negative values.
Is there a limit on how many numbers I can enter?
For statistics tools like mean and standard deviation, you can enter long comma-separated lists with no practical limit.