Calculateur de Durée de Chantier Gratuit
Estimez le nombre de jours nécessaires pour un chantier selon les heures de travail, la taille de l'équipe et les horaires quotidiens.
Working Days Needed
7
Working Days Needed vs Total Work Hours Needed
Formule
## How to Calculate Job Duration ### Formula **Days Needed = Total Work Hours / (Number of Workers x Hours Per Day)** This gives you the minimum calendar days required. In practice, add buffer time for weather delays, material availability, inspections, and other interruptions.
Exemple Résolu
A project requires 200 work-hours with 4 workers working 8 hours per day.
- 01Daily crew output = 4 workers x 8 hours = 32 hours/day
- 02Days needed = 200 / 32 = 6.25, rounded up to 7 days
- 03Weeks needed = 7 / 5 = 1.4 weeks
- 04Hours per worker = 200 / 4 = 50 hours
Questions Fréquentes
How do I account for delays?
Add a buffer of 10-20% to your estimated days. For outdoor projects, add more for weather delays. For complex projects, consider dependencies between tasks that may prevent parallel work.
Does adding workers always reduce duration?
Not always proportionally. Adding workers increases coordination overhead. There is also a physical limit to how many workers can operate in a space. Beyond a certain point, more workers can actually slow things down.
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