CALCULATOR
Adding Hours and Minutes Calculator
Add two supplied elapsed hours/minutes durations as decimal hours. Example: First hours: 1 hours, First minutes component (below 60): 30 minutes component, Second hours: 2 hours, Second minutes component (below 60): 15 minutes component gives 3.75 hours. Elapsed nonnegative durations only; hours are not wall-clock times. Minutes component 0..59.999. No dates, timezone, midnight crossing or dayligh
Elapsed nonnegative durations only; hours are not wall-clock times. Minutes component 0..59.999. No dates, timezone, midnight crossing or daylight-saving inference. Output is decimal hours; no HH:MM formatter promised. Derivation: Normalize each duration to hours then sum.
Accepted inputs: First hours: 0 to 1,000,000 hours; First minutes component (below 60): 0 to 59.999 minutes component; Second hours: 0 to 1,000,000 hours; Second minutes component (below 60): 0 to 59.999 minutes component.
Add two supplied elapsed hours/minutes durations as decimal hours
How the calculation works
decimal hours = h1 +m1/60 +h2 +m2/60
Worked example
With first hours 1 hours, first minutes component (below 60) 30 minutes component, second hours 2 hours, second minutes component (below 60) 15 minutes component, add two supplied elapsed hours/minutes durations as decimal hours is 3.75 hours.
Assumptions and limits
Elapsed nonnegative durations only; hours are not wall-clock times. Minutes component 0..59.999. No dates, timezone, midnight crossing or daylight-saving inference. Output is decimal hours; no HH:MM formatter promised. Derivation: Normalize each duration to hours then sum.