Elapsed Time Calculator

Calculate the exact elapsed time between two clock times, even when the end time crosses midnight.

There's a subtle but real difference between calculating a simple duration and calculating elapsed time specifically framed as "how long has this been going on" — the second version usually comes up in a slightly more consequential context, like tracking exactly how long a shift lasted, how long a process ran, or how long a meeting actually went compared to how long it was scheduled for.

The calculation itself is the same underlying arithmetic as any time-duration problem, but the framing matters for how the tool is built: instead of assuming you're comparing two arbitrary clock times, this version is set up around the specific start-and-end pattern that comes up in tracking real activities, where getting the number right often has a practical consequence attached, like confirming hours for a report or checking whether something ran longer than expected.

Enter a start time and an end time, and this tool calculates the exact elapsed duration between them, correctly handling the hour-and-minute borrowing that makes clock-time subtraction different from ordinary arithmetic — the same core calculation as the Time Duration Calculator, framed around tracking something that actually happened rather than a purely hypothetical time gap.

1. Enter a start time.
2. Enter an end time.
3. Press Calculate.
4. See the elapsed hours and minutes, with a note if it spans midnight.