Math & Science
Calculators.
Geometry, statistics, unit conversions, and school tools — math made instant. School
2 toolsGPA calculations and grade tracking — the academic essentials.
General Math
7 toolsPercentages, fractions, matrices, exponents, and logarithms — fundamental math operations made instant.
Percentage Calculator
Percentage of a number, increase, decrease, and difference.
Matrix Calculator
Add, multiply, find determinant, inverse, and solve linear systems.
Fraction Calculator
Add, subtract, multiply, and divide fractions.
Exponent Calculator
Calculate powers, roots, and fractional exponents.
Logarithm Calculator
Calculate log₁₀, ln, log₂, or any custom base with step-by-step work.
Scientific Notation Calculator
Convert numbers to/from scientific notation and perform ×, ÷, +, − operations.
Quadratic Formula Calculator
Solve ax²+bx+c=0 with roots, vertex, parabola chart, and step-by-step lesson.
Unit Converters
11 toolsTen converters covering every physical quantity — temperature, length, weight, volume, speed, pressure, energy, area, fuel efficiency, and data storage.
Temperature
Celsius, Fahrenheit, Kelvin, and Rankine conversions.
Length Converter
Meters, miles, feet, inches, and light-years.
Weight / Mass
Kilograms, pounds, ounces, stone, and metric tons.
Volume Converter
Liters, gallons, cups, fluid ounces, and tablespoons.
Speed Converter
MPH, km/h, knots, Mach, and m/s.
Pressure Converter
PSI, bar, atm, pascal, and mmHg.
Energy Converter
Joules, calories, BTU, kWh, and electronvolts.
Area Converter
Acres, hectares, square feet, and square meters.
Fuel Efficiency
MPG (US/UK), L/100km, and km/L.
Data Storage
Bytes to petabytes — binary and decimal.
Number Base Converter
Convert between binary, octal, decimal, and hex with positional notation breakdown.
Geometry
7 toolsArea, perimeter, volume, Pythagorean theorem, triangles, circles, slope, and distance — visual geometry with step-by-step solutions.
Area & Perimeter
Rectangle, square, and 8 shapes with formulas.
Volume Calculator
Sphere, cylinder, cone, box, and torus.
Pythagorean Theorem
Find hypotenuse, leg, or verify a right triangle.
Triangle Calculator
SSS, SAS, ASA, AAS, and SSA solving.
Circle Calculator
Radius, diameter, area, arc length, and sector.
Slope Calculator
Slope, y-intercept, and line equation from two points.
Distance Between Points
2D and 3D Euclidean distance with midpoint.
Statistics
10 toolsStandard deviation, confidence intervals, p-values, z-scores, and correlation — statistics tools for research, school, and data analysis.
Standard Deviation
Population and sample SD, mean, and variance.
Confidence Interval
90, 95, and 99% CI with margin of error.
P-Value Calculator
Z-test and t-test, one and two-tailed.
Sample Size
Power analysis for surveys and experiments.
Z-Score Calculator
Find z-score, raw value, or percentile.
Normal Distribution
PDF, CDF, and range probability calculator.
Correlation Coefficient
Pearson r with scatter plot and regression.
Expected Value
Weighted probability outcome calculator.
Mean, Median & Mode
Descriptive statistics, frequency distribution, and box plot.
Permutation & Combination
nPr and nCr with step-by-step factorial work, scenarios, and Pascal's Triangle.
Physics
5 toolsCore physics calculations — free fall, density, force, velocity, and power with real-world examples and multi-unit support.
Free Fall Calculator
Time, velocity, and height for falling objects with gravity.
Density Calculator
Solve for density, mass, or volume — with material presets.
Force Calculator
F=ma, friction, centripetal, weight, and impulse forces.
Velocity Calculator
Average velocity, SUVAT equations, and unit converter.
Power Calculator
Mechanical power via work/time, force×velocity, or torque.