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Math and unit converters
Calculate fractions, averages, standard deviation, GPA and grades, or convert common length, weight, temperature and volume units.
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7 available个可用工具
Math & conversion数学与换算
Solve common calculations and convert everyday units.完成常用数学计算、数据统计和单位换算。
GPA CalculatorGPA 计算器
Calculate your GPA on the 4.0 scale: add courses with credits and letter grades (A to F, with plus/minus) and get your exact grade point average.按课程学分和成绩计算 GPA，并汇总加权学分结果。
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Random Number Generator随机数生成器
Generate truly random numbers in any range — one or many, with or without duplicates, sorted or shuffled. Uses your browser's cryptographic randomness.设置最小值、最大值和数量，生成可去重的随机数字。
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Unit Converter综合单位换算
Convert length, weight, temperature, volume, area, and speed in one place instead of opening separate direction-specific pages.在一个页面换算长度、重量、温度、体积、面积与速度，无需逐个打开单向转换页。
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Average Calculator平均数计算器
Paste a list of numbers and instantly get the mean, median, mode, range, sum, min, and max. Learn which average to use and when.输入一组数字，计算平均数、总和、数量、最小值和最大值。
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Fraction Calculator分数计算器
Add, subtract, multiply, and divide fractions with automatically simplified answers, mixed numbers, and decimal equivalents. Step-by-step rules included.完成分数加减乘除并自动约分，同时查看小数结果。
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Grade Calculator成绩计算器
Work out your weighted course grade from assignments and exams, or calculate exactly what score you need on the final to hit your target grade.根据各项成绩与权重计算当前总评，并估算目标成绩所需分数。
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Standard Deviation Calculator标准差计算器
Compute sample and population standard deviation, variance, and mean from any list of numbers — with the formulas and when to use each version.计算一组数据的平均值、方差与总体或样本标准差。
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