数学
進数変換・乱数などの数学ツール
下のツールを選ぶだけで利用できます。すべて無料でブラウザ内で動作します。
📐 数学 · 計 53 個のツール
24 点計算機24 game: create 4 numbers to make 24 with solutions and hints, multi-difficulty and timer for math and brain training, with one-click copy, offline.
等差数列計算機Calculate the nth term and sum of an arithmetic series. Calculates sum, nth term and average for arithmetic series. Supports batch processing and one-click copy.
2進数計算機Binary calculator: support binary add subtract multiply divide and bitwise with decimal view for learning and dev, with one-click copy, offline.
円計算機（面積/円周）Circle calculator: calculate area, circumference and diameter from radius, diameter or circumference for learning, with one-click copy and offline.
複素数計算機Complex number calculator: add, subtract, multiply and divide complex numbers with magnitude and conjugate, showing a+bi with polar view for math, one-click copy.
信頼区間計算機Confidence interval calculator: calculate interval from sample mean and size at 90/95/99% for statistics, with one-click copy and offline.
相関係数計算機Correlation coefficient: enter two datasets to get Pearson and Spearman with significance, scatter plot and regression for analysis.
小数→分数計算機Decimal to fraction converter: convert decimals to simplest fractions and mixed numbers with repeating detection for math, with one-click copy and offline.
希釈計算機Dilution calculator: calculate stock volume and solvent by C1V1=C2V2 with molarity and percent for lab and reagent preparation.
2点間距離計算機Distance between points: enter two points to get straight distance, midpoint and slope in 2D and 3D with unit conversion for math and surveying.
階乗計算機Factorial calculator: calculate n! with digit count supporting 0-170 using scientific notation for larger with tips for math, with one-click copy and offline.
フィボナッチ数列計算機Fibonacci calculator: generate sequence, get Nth term and sum by count with fast matrix and big integers for math and algorithms.
分数→小数・パーセント計算機Fraction to decimal converter: convert numerator and denominator to decimal and percentage with repeating detection for math, with one-click copy and offline.
最大公約数・最小公倍数計算機GCD and LCM calculator: enter multiple integers to get GCD and LCM with steps for math study. Supports batch processing and one-click copy.
最大公約数・最小公倍数GCF and LCM calculator: quickly get greatest common factor and least common multiple for multiple integers with fraction simplification for teaching.
幾何平均計算機Geometric mean calculator: enter values to get geometric mean, product and log average for growth rates and exponential averages.
調和平均計算機Harmonic mean calculator: enter values to get harmonic mean and reciprocal average for rate averaging and finance. Supports batch processing and one-click copy.
緯度経度距離計算機Haversine distance calculator: calculate great-circle distance from two coordinates for travel, with one-click copy and offline.
16進数計算機Hex calculator: add, subtract, multiply and divide hex with decimal conversion and bitwise ops for programming and embedded.
二元一次連立方程式ソルバーLinear equation solver: solve one-variable and 2-variable linear systems by entering coefficients with steps and graph help for math study.
線形回帰計算機Linear regression: enter two datasets to get regression equation, slope, intercept and R² with scatter plot for stats. Supports batch processing and one-click copy.
対数計算機Log calculator: get common, natural and any-base logarithms with change-of-base and steps for math study. Supports batch processing and one-click copy.
誤差範囲計算機Margin of error calculator: computes error margin and confidence interval by sample size and confidence. Supports batch processing, export and one-click copy.
行列計算機Matrix calculator: compute determinant, inverse and transpose for 2x2 and 3x3 matrices with step-by-step results for linear algebra, with one-click copy and offline.
中央値/最頻値計算機Median and mode calculator: enter values to get median, mode, mean and range for statistics study. Supports batch processing and one-click copy.
中点座標計算機Midpoint calculator: enter two points to get midpoint, distance and slope in 2D and 3D for math and surveying. Supports batch processing and one-click copy.
モジュラ演算計算機Mod calculator: get remainder by dividend and divisor with big integers and negatives for programming and number theory Supports batch processing and one-click copy.
モル質量計算機Molar mass calculator: enter chemical formula to get molar mass, element percent and mole conversion with brackets and hydrates for chemistry.
正規分布確率計算機Normal distribution calculator: enter mean, std and interval to get PDF, CDF and quantiles with chart for stats and data analysis, with offline copy and history.
n乗根計算機Nth root calculator: compute nth roots with power check for fractions and negatives for math and engineering, with one-click copy, offline and history.
変化率計算機Percentage change calculator: calculate increase or decrease percent from original and new values for price comparison, with one-click copy and offline.
百分率差計算機Percentage difference calculator: get absolute and percentage difference from two numbers with formula for comparison, with one-click copy, offline and history.
百分率誤差計算機Percentage error calculator: get absolute and percent error from true and measured values with formula for lab validation, with one-click copy, offline and history.
順列・組合せ計算機Permutation and combination calculator: calculate P(n,r) and C(n,r) from total and pick count with formulas for math, with one-click copy and offline.
正多角形面積計算機Polygon area calculator: calculate area and perimeter from sides and length with visualization for geometry, with one-click copy and offline.
素数チェッカーPrime checker: test if number is prime with factors and steps for large and bulk numbers for math, with one-click copy, offline and multilingual.
素因数分解計算機Prime factorization: factor integer into primes with tree and exponential form for big numbers, with one-click copy, offline and history.
素数ジェネレーターPrime number generator: generate primes by range or count with filter, stats and export for research, with one-click copy, offline and multilingual.
三平方の定理計算機Pythagorean theorem calculator: enter two sides to get third side with formula, area and angles, right-angle check and diagram for math and with one-click copy,.
二次方程式ソルバーQuadratic equation solver: calculate discriminant, real roots, vertex and opening direction from coefficients with chart for math, with one-click copy and offline.
比率計算機Ratio calculator: solve missing term from known ratios with cross-multiplication for recipes, scaling and allocation, with one-click copy, offline and multilingual.
丸め計算機Rounding calculator: round to chosen decimal places up, down or half-up showing original and result for finance and statistics, with one-click copy and offline.
サンプル数計算機Sample size calculator: estimate sample size from confidence and margin with correction for surveys, with one-click copy and offline.
科学表記四則演算Scientific notation calculator: add and multiply numbers in scientific notation with plain results for physics, with one-click copy and offline.
科学表記変換ツールScientific notation converter: convert between standard and scientific notation with significant figures and exponent for study and research, with with one-click.
等差数列・等比数列計算機Sequence calculator: compute nth term and sum from first term and difference/ratio for math, with one-click copy and offline.
3D 形状体積計算機3D shape volume calculator: compute volume and surface area of cubes and cylinders for learning, with one-click copy and offline.
有効数字計算機Significant figures calculator: count sig figs and round to chosen digits with scientific notation for lab and homework, one-click copy and offline.
球体計算機Sphere calculator: calculate diameter, circumference, volume and surface area from radius for learning, with one-click copy and offline.
標準偏差/分散計算機Standard deviation calculator: get mean, variance and std dev from data list with visualization for statistics and teaching, with one-click copy, offline.
三角形面積計算機Triangle area calculator: get area from base height, two sides angle or three sides with formula and diagram for math, with one-click copy, offline.
ベクトル計算機Vector calculator: support add subtract, dot, cross and magnitude with visualization for math and physics, with one-click copy, offline.
Zスコア計算機Z score calculator: get Z score from value, mean and std dev with probability and interpretation for statistics, with one-click copy, offline and multilingual.
よくある質問
「数学」カテゴリとは？
「数学」カテゴリには 53 個の無料ツールがあります。すべてブラウザ内で動作します。
これらのツールは無料ですか？
はい、すべて無料で回数制限もありません。
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