Free tool · no sign-up
List your roles and their hours: the calculator estimates the shifts to fill and the number of volunteers to recruit, no-show margin included.
What you enter is not kept on our servers.
Split each role into shifts of a reasonable length, multiply by the number of people needed at the same time and by the number of days to get the shifts to fill, then divide by the number of shifts one volunteer can take. Finally, add a margin for no-shows.
Between 10 and 20% is common for a community event. Go up to 25% or more for outdoor events or events far from where your volunteers live.
Shifts of 3 to 4 hours limit fatigue and make recruiting easier. Beyond 6 hours, plan a break and a meal.
No. The calculator works without an account and nothing is kept: close the page and your inputs are gone.
Create your shifts in Planigramme and let volunteers sign up themselves. Free for small teams.
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