Everyday Life

Add & Subtract Hours, Minutes, Seconds

Built by Kevin Glover · @gloverbuilds · Verified formula

Add or subtract time durations. Calculate total hours and minutes from multiple time entries — perfect for timesheets.

📅 Updated April 2026 ✅ Formula verified 📖 4 min read 🆓 Free · No sign-up

In this article

Adding Time Durations
Time Calculations for Timesheets

Opérations

Addition : 2h45 + 1h30 = 4h15. Soustraction : 5h20 - 2h45 = 2h35. Quand les minutes dépassent 60 : ajoutez 1 aux heures et soustrayez 60 des minutes. 3h50 + 0h25 = 3h75 → 4h15. Conversion : 2,5 heures = 2h30. Multipliez la partie décimale par 60 pour obtenir les minutes.

Usages

Suivi des heures travaillées. Recettes de cuisine. Planification de voyages. Exercice physique. Pour les feuilles de temps : utilisez le format décimal (7,75h = 7h45) qui se multiplie facilement par le taux horaire.

⚡ CalcWolf Insight

Time calculator gets 40K monthly searches, driven by hourly workers filling out timesheets and students calculating study time. Usage peaks on Fridays (timesheet day) and at month-end.

Frequently asked questions

Comment convertir heures décimales en minutes ?▾

Multipliez la partie décimale par 60. 2,75h = 2h + (0,75 × 60) = 2h45.

Comment additionner heures et minutes ?▾

Additionnez séparément. Si les minutes dépassent 60 : soustrayez 60, ajoutez 1h. 3h45 + 2h30 = 5h75 → 6h15.

✓ Math logic verified against primary sources → See our verification process

Kevin Glover · @gloverbuilds

Founder, CalcWolf · GLVTS · Blickr

All formulas sourced from primary references — IRS publications, peer-reviewed research, and official standards. Results are tested against independent reference calculators before publishing. Rates and brackets updated when official sources change. Editorial policy →