单位换算
视觉单位换算
小费和账单分割器
立即分割账单和小费
折扣计算器
看看你节省了多少钱
速度/距离/时间
D = R × T 目视解决
年龄计算器
任何日期的确切年龄
日期差异
任意两个日期之间的天数
体重指数计算器
BMI 与健康区测量仪
燃油成本计算器
行程燃油成本可视化
配速计算器
步速/距离/时间求解器
睡眠计算器
在睡眠周期之间醒来
工资计算器
薪资转换工具
TDEE / 卡路里计算器
根据身体数据计算 BMR 和 TDEE
电费计算器
电费估算工具
GPA计算器
加权GPA计算
Final Grade
Find the final-exam score needed to hit a target course grade
Business Days
Count business days (Mon-Fri) between two dates
Time Duration
Add or subtract two HH:MM:SS durations
Countdown
Count down to (or from) a target date and show days, hours, minutes
Work Hours & Time Card
Track daily hours worked and compute weekly pay
Unit Price & Best Deal
Compare price per unit across packages to find the cheapest deal
Budget Percentage Planner
Split a budget by percentages across categories with overage warnings
Map Scale Calculator
Convert between map distance and real-world distance using a representative fraction
Roof Pitch Calculator
Convert between rise/run, slope angle, and standard pitch labels
Stair Calculator
Plan stair rise, run, and tread depth with code-friendly guidance
Paint Coverage Calculator
Estimate gallons of paint needed for a room with deductions and coats
Tile Calculator
Estimate tile count and boxes for a floor or wall with waste margin
DMS Coordinate Converter
Convert latitude/longitude between decimal degrees and degrees-minutes-seconds
Bearing & Distance Calculator
Great-circle distance and bearing between two latitude/longitude points
Concrete Volume & Bags
Volume of slabs and columns plus bag count by yield
Tire Size Comparator
Parse and compare tire size codes like 225/45R17 by diameter and revs
Gear Ratio & RPM
Engine RPM, gear ratio, final drive, and tire diameter into vehicle speed
Time Zone Converter
Convert a time across IANA time zones using built-in Intl.DateTimeFormat
食谱份量换算器
按份数缩放食谱，自动换算原料单位。