Archives: Time Calculation Guides

Manually total durations, including seconds and sums over 24 hours.

Manually subtract one duration from another using borrowing and signed results.

Find the clock time and day offset after a known starting clock time.

Find elapsed time between clock endpoints, including an explicit next-day end.

Convert in both directions and distinguish a decimal fraction from minutes.

Calculate net daily and weekly work time from punches and user-designated unpaid breaks.

Sum numeric durations and show totals above 24 hours in desktop Excel.

Sum duration cells in Sheets and troubleshoot number formatting and text inputs.

Scale one fixed duration by a count or positive factor.

Divide a duration into equal blocks and account for remainder seconds.