Table of Contents
- Why Daily Coffee Output Matters for Commercial Kitchens
- The Core Formula for Calculating Coffee Output
- Using an Office Coffee Consumption Calculator
- Estimating Daily Coffee Consumption Per Employee
- Matching Output to Commercial Coffee Machine Capacity
- Coffee Beans Per Cup Calculation and Stock Planning
- Common Mistakes When Sizing Coffee Equipment
- Frequently Asked Questions
Last Updated: October 8, 2026
Why Daily Coffee Output Matters for Commercial Kitchens
If your team keeps leaving the building to buy coffee, you are paying twice: for the drink and for the time. Calculating daily coffee output turns a vague feeling into a number you can act on.
Admiral Vending has eight years of industry experience helping workplaces size their machines. You need three figures: how many people drink coffee, how many cups each has, and how long your busy period lasts. Get those wrong and you either buy a machine that queues at 9am or one that sits idle.
Daily coffee output is the total number of drinks your site needs to serve in a day. It decides machine size, bean stock and service intervals.
The Core Formula for Calculating Coffee Output
Coffee output is the total number of drinks your site serves in a working day. The core formula is:
Daily coffee output = number of coffee drinkers × average drinks per person per day
That gives you a baseline. Add a buffer of 10 to 20 per cent for meetings, visitors and seasonal spikes.
A common mistake is counting headcount instead of coffee drinkers, which overstates demand and pushes you toward a bigger machine than you need.
NHS advice on caffeine and hydration notes that caffeine affects people differently, so intake varies widely across a workforce. That variation is exactly why you estimate per person rather than assuming a flat rate.
Step 1: Count Your Daily Covers
Daily covers means the number of people who will actually take a drink on a given day. Start with total staff on site, then strip out non-coffee drinkers:
- List everyone on site on a typical weekday
- Remove anyone who works remotely that day
- Remove anyone who only drinks tea or water
- Add regular visitors, clients and contractors
For a 150-person office with hybrid working, you might have 90 people on site. If roughly 70 per cent drink coffee, that is about 63 covers.
Step 2: Estimate Coffee Drinks Per Customer
Most workplace coffee drinkers have one to three drinks a day. Two is a sensible planning figure.
So 63 covers at two drinks each gives 126 drinks per day. Add a 15 per cent buffer for meetings and you are planning for around 145.
Using an Office Coffee Consumption Calculator
An office coffee consumption calculator turns your headcount and drinking habits into a daily output figure. You can build one in a spreadsheet in under ten minutes, with four columns:
| Input | What to enter | Example |
|---|---|---|
| People on site | Typical weekday headcount | 90 |
| Coffee drinkers | Share who drink coffee | 63 |
| Drinks per person | Average daily cups | 2 |
| Buffer | Allowance for meetings | 15% |
| Daily output | Total drinks needed | 145 |
Once you have the daily figure, multiply by five for a working week. That weekly number drives your bean order and cleaning schedule.
The same sheet should track your peak hour. If most drinks land between 8am and 10am, your machine must handle that burst, not just the daily total.
Turning the Calculator Into an Equipment-Specific Schedule
Most guides stop at the daily total. The more useful step is to split it by equipment, because each item has its own maintenance rhythm:
Log each task against the daily output figure. A site serving 300 drinks a day hits filter capacity and descale intervals far sooner than one serving 50.
Water-Quality Testing and Filter Selection
Filtered water is the biggest lever on limescale and machine lifespan, yet most guides only say “use filtered water” without explaining how to choose a filter. Start by testing your supply.
Record the test result and filter change date in the same sheet as your output figure. When the filter is due, the calculator tells you how many drinks it has served, a better trigger than a calendar.
Safety and Lockout Before Maintenance
Before any cleaning or filter change, isolate the equipment. Switch off and unplug the machine, or isolate at the spur, and let it cool. Espresso machines hold hot water and steam under pressure, so never open a boiler or remove a group head while hot.
Maintenance Log and Measurable Outcomes
A log turns cleaning into a measurable process. Track these fields per machine:
- Date and time of clean
- Task completed (backflush, descale, filter change, burr check)
- Person responsible
- Output served since last clean
- Any fault or warning sign noted
- Next due date
Review the log monthly against your daily output figure. If downtime rises or extraction times drift, the log shows whether cleaning frequency needs to increase, protecting machine lifespan and drink consistency.
Track your busiest hour separately from your daily total. A machine that copes with 145 drinks a day can still fail if 60 of them arrive in 30 minutes.
Estimating Daily Coffee Consumption Per Employee
Daily coffee consumption per employee sits between one and three drinks for most workplaces. Two is our planning figure.
The number shifts with the site type. A factory floor with fixed breaks clusters demand. A showroom with visiting clients spreads it across the day and pushes the total higher.
Factors that raise the figure:
- Long shifts with few breaks
- Client facing sites with hospitality expectations
- Cold weather and early starts
- Free or subsidised drinks
Factors that lower it:
- Small teams under 20 people
- Hybrid working patterns
- A strong tea drinking culture
For a 40-person site, two drinks each gives 80 drinks a day, well within reach of a tabletop machine. For 150 people, you need a higher capacity unit or two machines in separate locations.
Health and Safety Executive guidance on workplace welfare sets out that employers should provide access to drinking water and suitable refreshment facilities. Coffee provision sits alongside that duty, not instead of it.
Matching Output to Commercial Coffee Machine Capacity
Commercial coffee machine capacity is measured in drinks per hour, not per day. A machine rated at 100 drinks per hour can serve 100 in a smooth hour, not in fifteen minutes. Match your peak demand to the hourly rating.
Use this rule of thumb:
- Under 50 drinks a day: compact tabletop machine
- 50 to 150 drinks a day: higher capacity tabletop machine
- 150 to 400 drinks a day: floor standing machine
- Over 400 drinks a day: multiple machines across the site
Admiral Vending supplies bean to cup machines across all of these bands, from compact tabletop units to floor standing models for high footfall sites. Each grinds fresh beans on demand and serves espresso, americano, cappuccino, latte and hot chocolate, with fresh brew tea on selected models. If your site needs something more compact, our table top coffee machines cover the lower output bands, while larger sites can step up to commercial bean to cup coffee machines built for higher daily volumes.
If you are unsure which band you fall into, our AI powered instant quote system can match a machine to your daily output figure in minutes.
Warning Signs That Capacity Is Being Strained
Capacity problems rarely announce themselves as a single failure. Watch for these symptoms:
- Queues at peak: staff waiting more than a few minutes, which means the hourly rating is below the peak demand.
When you see any of these, check the simple causes first: is the machine clean, is the grinder set correctly, is the water filter due? If the symptom persists, escalate.
What Staff Can Fix and When to Call a Technician
Not every fault needs an engineer, but some do. A clear threshold prevents damage and keeps the warranty valid.
If your site is in a hard water area and descaling is needed more than the manufacturer recommends, ask the technician to check the water treatment too. The fault is often in the supply, not the equipment.
Professional Servicing Thresholds
Record each service in your maintenance log alongside the output figure. That record shows whether the machine is pushed beyond its rating and gives the technician a clear history.
Buying on daily total alone is the most common sizing error. A machine that meets the daily figure but not the peak hour will still queue, and staff will still leave the building.
Coffee Beans Per Cup Calculation and Stock Planning
Coffee beans per cup calculation starts with a simple range: most machines use 7g to 9g of beans per single shot. A double shot uses roughly 14g to 18g.
Take a mid figure of 8g per drink. At 145 drinks a day, that is about 1.16kg of beans daily. Over a five day week, you need roughly 5.8kg.
Add a small margin for waste, purging and dialling in. Ten per cent is plenty.
| Drinks per day | Beans per day (8g) | Beans per week |
|---|---|---|
| 50 | 0.4kg | 2kg |
| 100 | 0.8kg | 4kg |
| 150 | 1.2kg | 6kg |
| 300 | 2.4kg | 12kg |
Stock planning follows from there. Order weekly, store beans in a cool dry place, and keep the hopper topped up rather than filled to the brim. Milk is the other half of the sum: if a third of your drinks are milk based, plan for 100ml to 150ml per drink.
Common Mistakes When Sizing Coffee Equipment
Sizing errors cost money in both directions. Oversize and you pay for unused capacity. Undersize and you pay in lost time and unhappy staff.
The five mistakes we see most often:
- Counting headcount instead of coffee drinkers
- Ignoring the peak hour and planning on the daily total
- Forgetting visitors, clients and meeting rooms
- Skipping a buffer for seasonal spikes
- Choosing on price alone without checking the hourly rating
A common mistake is treating a quiet Monday as typical. Measure your busiest day, not your average one. What most guides miss is the link between output and cleaning: higher output means more coffee oils, milk residue and limescale, so a machine serving 300 drinks a day needs backflushing and descaling more often than one serving 50.
Water UK information on water hardness explains why hard water areas build scale faster. If your site sits in a hard water zone, plan for more frequent descaling and consider filtered water from day one.
Once your output figure is set, build a maintenance schedule around it, log every clean, and review the numbers each quarter. That protects equipment lifespan and keeps extraction consistent.
Frequently Asked Questions
How do you calculate daily coffee demand for a business?
Multiply the number of people on site by the average drinks each person has per day, then add a buffer for guests and meetings. For a 100 person office where staff average two drinks, that is 200 drinks before buffer. Add 15 to 20 per cent to cover variability, giving a working target of around 230 to 240 drinks. This figure then determines the commercial coffee machine capacity you need.
How many cups can a commercial bean to cup coffee machine make per day?
It depends on the model. Compact tabletop bean to cup machines suit lower volumes, while floor standing commercial machines handle several hundred drinks per day in high footfall sites. Always check the manufacturer’s stated hourly and daily output rather than assuming. As a rule, size your machine so typical daily demand uses no more than 70 to 80 per cent of its rated capacity.
How many coffee beans do I need per cup?
A single espresso typically uses 7 to 9 grams of beans, while a larger americano or milk based drink may use 14 to 18 grams. For planning, assume around 10 grams per drink as a working average. A site serving 200 drinks per day would therefore need roughly 2 kilograms of beans daily, or about 10 kilograms across a five day working week.
How much spare capacity should a commercial coffee machine have?
Plan for 20 to 30 per cent spare capacity above your calculated daily output. This covers morning rush periods, unexpected meetings, seasonal spikes and guests. A machine running continuously at its limit will queue, wear faster and produce inconsistent extraction. Spare capacity also means you can add staff or expand the site without replacing equipment straight away.
Getting the numbers right is the difference between a coffee setup that works and one that quietly drains staff time every morning. Admiral Vending supplies commercial bean to cup machines sized to your actual daily output, with nationwide installation, operator training and ongoing service support. Our range covers everything from compact tabletop units to floor standing machines for hundreds of drinks a day. Get your instant quote and match the right machine to your site.
