Time Calculator
Add or subtract two times in hours, minutes, and seconds, or convert any duration between units.
Inputs
Results
About the Time Calculator
Doing time math by hand is error-prone — minutes carry at 60, not 100. This calculator handles the carry for you and shows the result in hours/minutes/seconds plus equivalent values in each unit.
Use add mode for combining durations (e.g. total of several tasks), subtract for elapsed time, and convert to express one duration in different units.
Frequently asked questions
More other calculators
Age Calculator
Calculate exact age in years, months, and days.
Date Calculator
Add, subtract, and compare dates with ease.
Hours Calculator
Calculate work hours from start, end, and break.
GPA Calculator
Calculate GPA on the 4.0 scale from grades and credits.
Grade Calculator
Compute weighted course grades from assignment scores.
Concrete Calculator
Estimate concrete volume and bags for slabs, footings, and columns.
Subnet Calculator
Compute network, broadcast, mask, and usable host range from CIDR.
Password Generator
Create strong, random passwords with custom rules.
Conversion Calculator
Convert length, weight, temperature, and volume units.