Compare calculators

Both calculators run independently — change the inputs on either side to compare results.

Shift Work Schedule Optimizer

Score any shift configuration for worker wellbeing by penalising antisocial start times, long durations, and consecutive shifts. Use it when designing rotas to minimise health and productivity risks.

Shift Start Time (hour (0-23))

Shift Duration (hours)

Worker Time Zone Offset (hours from UTC)

Consecutive Shifts (shifts)

Shift Pattern

Fill in the required fields to see your result.

Time Zones

Global Event Time Broadcaster

Score how well a UTC broadcast time serves your primary global audience. Use it when planning webinars, live streams, or product launches to maximize viewer convenience across time zones.

Event Time (UTC) (hour (0-23))

Event Duration (hours)

Primary Audience Zone

Global Audience Weight

Weekend Impact

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Key differences

	Shift Work Schedule Optimizer	Global Event Time Broadcaster
Category	Time Zones	Time Zones
Inputs required	5	5
Result	Schedule Health Score (/100)	Global Audience Score (/100)
What it does	Score any shift configuration for worker wellbeing by penalising antisocial start times, long durations, and consecutive shifts. Use it when designing rotas to minimise health and productivity risks.	Score how well a UTC broadcast time serves your primary global audience. Use it when planning webinars, live streams, or product launches to maximize viewer convenience across time zones.