Queue Wait Time Calculator

Free queue wait time calculator for any industry. Enter your arrival rate, staff count, service time and get instant wait time estimates.

Queue Wait Time Calculator

Start with your industry to load typical values

The Basics

These three numbers have the biggest impact on wait time

How many customers arrive per hour? ? Count how many people join your queue in a typical hour. A busy cafe at lunch might see 60, a small clinic might see 8 to 12.
45
1/hr (very quiet)500/hr (major event)
How long does serving one customer take? ? Time from when a staff member starts helping to when they finish. Include the full process: scanning, payment, paperwork, etc.
4 min
1 min (fast checkout)60 min (long consultation)
How many staff are serving at the same time? ? Count open counters, teller windows, or service desks actively helping customers right now. Not your total headcount.
3
1 staff30 staff

Your Setup

Describe how your queue is organised

How is your queue arranged? ? A single shared line feeding multiple counters (like a bank) is more efficient than separate lines per counter (like a supermarket). Virtual queues let customers wait anywhere.
How many hours per day do you operate?
How much busier is your peak hour? ? If your average is 30 customers/hr but your busiest hour sees 60, that is 2x busier. This is used to show worst-case wait times.
Do customers sometimes leave without being served? ? The share of customers who see a long queue and walk away, or give up mid-wait. A typical retail queue is around 5 to 15%.

Staff Performance

Fine-tune how efficiently your team works

How focused are staff on serving customers? ? Staff are rarely serving non-stop. They answer phones, handle interruptions, process payments, etc. 80 to 90% is realistic for most businesses.
85%
40% (lots of interruptions)100% (fully focused)
Do staff have regular breaks between customers? ? Time each hour when a counter is closed or a staff member steps away. Even short breaks reduce your effective capacity.
Do you use software to help serve customers faster? ? Modern POS systems, booking tools, or digital workflows can meaningfully speed up service. Self-checkout kiosks have the biggest impact.
Some customers turn away when they see a long queue ? When customers decide not to join after seeing the queue length. This slightly reduces pressure but means lost business.
You have a priority or express lane (VIP, elderly, disability) ? If some customers skip ahead, this increases wait times for regular customers. Enable if you run fast-track or VIP lanes.
Customers book appointments in advance ? Appointment systems spread arrivals more evenly and reduce random spikes. This generally lowers average wait times.

Planning Tools

Test different situations and find your ideal staffing level

Simulate a scenario

Compare two staffing options

See how adding more staff changes wait time

Option A

Option B

How many staff do I need?

Enter your target wait time and we will calculate the minimum staff required

Estimated Average Wait Time

3.2 min

Time in queue before a customer is served

Good — customers are not waiting long

People in queue

2.4

on average

Staff busy

63%

of the time

Total visit time

7.2 min

wait plus service

Customers served

43/hr

per hour

During your busiest hour

Peak wait time —
9 in 10 customers wait less than —
Customers lost per day (walk away) —

Want to eliminate these wait times?

Entry2Exit lets customers join your queue from their phone. No standing, no frustration. Works for any industry and goes live in under a day.

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