免费无需登录。年龄小费百分比日期差立算。
12 calculators
Calculate tip amount, total bill, and split evenly among multiple people.
Calculate percentages: find X% of Y, percentage change, increase/decrease, and more.
Calculate sale prices, savings, and final cost with tax for any discount percentage or amount.
计算您的精确年龄并详细分解
Calculate the number of days, weeks, months, and years between two dates, including workdays.
Calculate your final grade percentage, letter grade, and GPA from test scores and assignments.
Add, subtract, multiply, and divide fractions with automatic simplification and mixed number output.
Generate random numbers within a range, with optional duplicates and decimal precision.
Convert between Celsius, Fahrenheit, Kelvin, and Rankine temperature scales instantly.
Convert any amount to multiple currencies simultaneously with 30+ supported world currencies.
Convert times between multiple time zones worldwide for scheduling meetings and travel.
Comprehensive unit converter for length, weight, volume, area, speed, pressure, energy, and data.
