Time Calculator

Time Calculator

Add or subtract time values, calculate time from a date, or use expressions to compute complex durations

⚠️
Add or Subtract Two Time Values
Days
Hours
Minutes
Seconds
Days
Hours
Minutes
Seconds
Empty fields are treated as 0. Negative results will show as absolute value with a minus sign.
Result
0d 0h 0m 0s
Total duration
Days
0
Hours
0
Minutes
0
Seconds
0
Total Hours
0
Total Minutes
0
Total Seconds
0
Weeks + Days
0w 0d
Calculation
—
📊 Result Summary
—
⚠️
Add or Subtract Time from a Date
Month
Day
Year
Hour
:
Minute
:
Second
Format
Days
Hours
Minutes
Seconds
Result Date & Time
—
—
Day of Week
—
Date
—
Time
—
Duration Added
—
📅 Result Summary
—
Calculation
—
⚠️
Time Calculator in Expression
Use d = days, h = hours, m = minutes, s = seconds. Operators: + and − only.
1d 2h 3m 4s + 4h 5s - 2030s 8h 30m + 1h 45m 5h - 2h 30m 15s 2d 6h + 18h 45m - 3h 20m 90m + 45m + 30s Full example
Expression Result
0d 0h 0m 0s
Total duration
Parsed Expression
—
Days
0
Hours
0
Minutes
0
Seconds
0
Total Hours
0
Total Minutes
0
Total Seconds
0
Weeks + Days
0w 0d
📊 Result Summary
—
📋 Common Time Units Reference
1 day = 24 hours  |  1 hour = 60 minutes  |  1 minute = 60 seconds  |  1 week = 7 days  |  1 year ≈ 365.242 days