Learning and Calculation All Tools
Units, mathematics, statistics, grades and learning aids.
Learning and Calculation74
Units, mathematics, statistics, grades and learning aids.
scientific calculator
Calculate parentheses, powers, roots, trigonometric functions, and commonly used mathematical expressions.Unit conversion
Convert length, area, volume, mass, temperature and speed.Percentage and proportional calculation
Calculate the proportion, growth rate and allocate values by weight.Geometric area and volume
Calculate the area or volume of rectangles, circles, triangles, cuboids, cylinders and spheres.Data Statistics Calculator
Calculate the mean, median, extreme, population and sample variance and standard deviation.Achievement and grade point calculation
The weighted average score is calculated according to the credits, and the self-fill course performance point or linear rules are supported.Random lottery and grouping
Import the list, randomly extract, group or generate the appearance order.Chinese and English typing speed test
Measure the speed, accuracy rate and record the score using the built-in or custom material.Fractional Calculator
Complete the addition, subtraction, multiplication and division of scores, apportionment and finite decimals conversion.digital hex
Convert positive and negative integers between 2 and 36 hexes.Maximum common divisors and least common multiples
The largest common divisor and minimum common multiple of multiple integers are calculated in batches.Solving the quadratic equation
Solve ax²+bx+c=0, which supports real-numbered roots, complex roots and degraded primary equations.arithmetic arithmetic sequence calculation
Calculate the nth, first n, and various details of the arithmetic or arithmetic sequence.Triangle corner calculation
It is known that the three angles, areas, circumference and inner and outer circle radii of the triangle are found on the three sides.Arrange Combination Calculator
Accurately calculate the number of permutations and combinations selected from n different elements.Integer prime factor decomposition
Decompose positive integers into prime factors to see if it is a prime number and factor product.Binary primary equations solution
Solve the two binary one-time equations, and judge the unique solution, no solution or infinite multi-solution.weighted average calculation
The weighted average is calculated according to the value and weight of each item, and is applicable to the summary of grades and indicators.Matrix Basic Operations
Calculate matrix addition, subtraction, multiplication and transpose, and check whether the dimensions are compatible.Decimal precision rounding
Rounding decimal text according to the specified decimal places, supports rounding, truncation, up and down.Screen PPI and Size Calculation
The pixel density, screen width and dot distance are estimated from the resolution and diagonal dimensions.Roman Numeral Converter
Convert between 1 to 3999 integers and standard Roman numerals.Integer to English Words Converter
Convert positive and negative integers into English numerals and support numbers within one trillion.Arithmetic Worksheet Generator
Generate integer addition, subtraction, multiplication and division exercises and independent answers, which is easy to copy and print.Proportional Dimensions Calculator
Fix the original aspect ratio, and calculate the dimensions of the other side according to the target width or height.Linear Interpolation Calculation
The interpolation of intervals is calculated from two known points to display the slope of the line and the equation.Linear Regression Calculator
A unary linear fit is calculated for paired data, and the scatter, fitted lines and related indicators are displayed.Binomial Distribution Calculator
Calculate the probability that the independent repetition test is just, at least, or at most successfully specified.Normal Distribution Calculator
Calculate the probability of the normal distribution interval and the quantile of the specified cumulative probability, and display the curve.Polynomial Calculator
Calculate polynomial addition, multiplication, derivation and specify point function values.2D and 3D Vector Calculator
Calculate vector and difference, point product, length, angle and three-dimensional fork product.Complex Number Calculator
Add, subtract, multiply or divide two complex numbers, and calculate the result's magnitude and argument.Two's Complement Calculator
Converts the signed decimal integer, two's complement, and hexadecimal in the specified bit width.Boolean Truth Table Generator
Generate all input combinations and results for Boolean expressions, and judge whether it is constant or false.Poisson Distribution Calculator
The probability and cumulative probability of k events that appear when a given average number of events is calculated.Hypergeometric Distribution Calculator
Find the probability of a specified number of successes when sampling without replacement from a finite population.Wilson Proportion Confidence Interval
The Wilson proportional confidence interval is calculated from the number of successes and sample sizes.IEEE754 floating point number analysis
View the sign bit, exponent, mantissa and hex code of 32-bit or 64-bit floating-point numbers.M/M/1 Queue Calculator
Calculate the steady-state wait and system number of a single service desk based on the average arrival rate and service rate per hour.Moving Average and Exponential Smoothing
Calculate trailing moving averages and simple exponential smoothing for equally spaced observations to examine local trends.Weighted graph shortest path
Input node and non-negative integer edge weight, calculate the shortest distance and path specified from the starting point to each node.Minimum cost connection solution
Enter the undirected node connection cost and find the lowest total cost connection set that covers each connected component.Network Maximum Flow and Minimum Cut
Calculate maximum flow from a specified source to a sink and a corresponding minimum cut using directed edge capacities.Spearman Rank Correlation
The Spearman rank correlation coefficient is calculated for paired observations, showing the average rank of each observation.Contingency Table Chi-Square Test
Calculate the Pearson chi-square statistics, the expected frequency, the degree of freedom and approximate P values from the two-dimensional frequency table.Fisher Exact Test for 2×2 Tables
Calculate two-sided, lower-tail and upper-tail Fisher exact p-values for a 2×2 table with fixed margins.Cohen Kappa Inter-Rater Agreement
Compare two raters' labels for the same objects and calculate observed agreement and Cohen's kappa.Multiple Testing p-Value Adjustment
Adjust p-values in one family of tests using Bonferroni, Holm, BH or BY, preserving the input order.Benford First-Digit Analysis
The first significant number of non-zero decimal data is compared to Benford's theoretical ratio one by one.Strongly Connected Components
Analyze the mutually reachable nodes in the directed connection, and output strongly connected groups and inter-group connections.Euler Trail Planner
Determine whether the undirected line can be run continuously at one time and only once per line, and list the travel sequence.Great-Circle Distance and Destination
Estimate the spherical shortest distance, initial azimuth, or the destination according to the distance and direction.Bracketed Function Root Finder
Enter the real function and the different number interval, use the dichotomy method to find an approximate zero point, and check the residuals and the complete iteration process.Numerical Definite Integral
Calculate the approximate definite integral of the smooth real function on the limited interval, and display the number of adaptive subdivisions and error estimation.ODE Initial Value Solver
Enter a first-order scalar differential equation and initial value to generate a fourth-order Runge-Kutta solution table and compare two step sizes.Discrete Fourier Spectrum Analysis
The DFT unilateral spectrum is calculated for the equivalent interval real numbers, and the frequency, amplitude, complex components and phase are checked.Sequence Lag Correlation Analysis
Compare the cross-correlation and overlap of the overlapping segment cosine similarity between the two sets of numerical sequences at different sampling.Data Peak Detection
Identify the local peaks and flat peaks of the numerical sequences, and screen according to peak height, protruding and center spacing.Clock pointer angle calculation
Calculate the position and smaller angle of the hour and minute hands at any hour, minute and second.Birthday Collision Probability Calculation
Calculate the probability of at least two dates with the same probability of the same probability date model.Collect card expectations
Calculate and repetitively extract the desired number and standard deviation of all types in the repetitive extraction model.Conditional Signals Bayesian Probability
The posterior probability after the observation signal is calculated using the prior probability and the two conditioned signal probability.Discrete Markov State Calculation
The state distribution of the specified number of steps is calculated according to the self-fill transfer matrix and the initial probability.2D K-means data grouping
Deterministic k-means clustering is performed on the finite two-dimensional coordinates, and the cluster number and square error are displayed.IQR range and out-of-bounds check
Values located outside the statistical boundary in the list of quartiles and self-fill multiples.Welch two sample mean test
The mean difference, Welch degree of freedom and the two-sided t-test P value were calculated for the two independent numerical values.Paired sample t-test
A two-sided t-test of mean difference was carried out for one-to-one pairing observations of the corresponding positions.One-way ANOVA
Calculate the square sum, F statistic and p value of the inter-group between groups of multiple groups of independent samples.Mann-Whitney rank test
The two groups of independent samples were calculated and the approximate bilateral P values of the U-statistic and juxtaposed rank correction were calculated.Kruskal-Wallis multi-group rank test
The H statistic and chi-square approximation p-values were calculated for juxtaposed rank corrections for multiple groups of independent samples.Geometric distribution probability calculation
Calculate the probability, cumulative probability and expectation of the first successful test serial number in the independent repetition test.Negative binomial distribution probability calculation
Calculate the probability, accumulation probability and variance of the number of failures before the fixed number of successes are reached.Exponential waiting time distribution
The cumulative probability, tail probability, mean and variance of the latency are calculated according to the event rate.Information entropy and number of valid categories
The non-negative frequencies or weights are normalized into probability, and the Shannon entropy and the number of valid categories are calculated.