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
2 toolsPercentages and fractions — fundamental math operations made instant.
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
8 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.
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.