What Size Lockers Do Schools Need? A Complete Sizing Guide

sales67174
Apr 7
3 min read

There are many sizes options, which is right for your school?

Choosing the right size of lockers is crucial for schools. Not only does it impact student comfort and organisation, but it also affects corridor flow, storage efficiency, and even safeguarding. Whether you're outfitting a primary school, secondary school, or sixth form, the right locker dimensions can make all the difference.

In this guide, we break down the most common school locker sizes, what they’re best used for, and how to make the right decision based on student age, available space, and usage needs.

Why Locker Size Matters

Lockers that are too small become useless for bulky items like bags, coats, and sports kits. Lockers that are too large can take up valuable corridor or cloakroom space unnecessarily. Finding the sweet spot helps ensure:

Students can store their belongings comfortably
Corridors remain safe and clutter-free
Schools avoid overspending on oversized units
Locker usage is practical for everyday school life

Standard Locker Sizes for Schools

Here are the most commonly used locker sizes for schools in the UK, along with their typical use cases:

Full-Height Lockers (Single-Tier)

Size: Approx. 1800mm (H) x 300mm (W) x 450mm (D)Best for: Secondary schools, sixth forms, and staff use

These provide maximum storage space, ideal for larger school bags, winter coats, laptops, and sports kits. Often used for Year 10+, where students carry more equipment daily.

Two-Tier Lockers

Size per compartment: Approx. 900mm (H) x 300mm (W) x 450mm (D)Best for: High school and general use across KS3 & KS4

Two-tier lockers are one of the most popular choices. They strike a balance between space-saving and storage capacity, fitting bags, books, and PE kits comfortably.

Three-Tier Lockers

Size per compartment: Approx. 600mm (H) x 300mm (W) x 450mm (D)Best for: Key Stage 2, Key Stage 3, or where storage is lighter

Great for students who don’t need to carry full-size bags all day. Compact but still functional for most daily essentials.

Four-Tier Lockers

Size per compartment: Approx. 450mm (H) x 300mm (W) x 450mm (D)Best for: Light-use areas, mobile phones, or shared storage

Four-tier lockers are perfect when students only need minimal storage—ideal for schools with tech policies where pupils store devices, or where lockers are used as secure drop zones between classes.

Low-Height Lockers / Junior Lockers

Size: Varies – typically 900mm or 1200mm total heightBest for: Primary schools and younger students

Designed specifically for younger pupils, these lockers are accessible, safe, and sized appropriately for smaller bags, coats, and lunchboxes.

Cube Lockers

Size: Typically 300mm x 300mm x 300mmBest for: Staff rooms, mobile phone storage, or light personal items

These are ideal where minimal storage is needed or space is extremely tight. They’re also great for adding to existing cloakroom spaces.

Things to Consider When Choosing Locker Sizes

Student Age GroupChoose a locker height that matches the students using them. Younger pupils benefit from low or mid-height lockers for accessibility and safety.
Storage NeedsConsider what students will be storing—books, PE kits, musical instruments, tech devices—and choose a size accordingly.
Available SpaceMeasure up carefully. In tighter corridors or cloakrooms, depth and width matter just as much as height. Lockers that are too bulky can create pinch points and accessibility issues.
Traffic FlowIn high-traffic areas, opt for narrower units or split blocks to prevent crowding during peak times.
Security and HygieneIf you’re installing education lockers in shared spaces like changing rooms, consider antibacterial coatings and secure lock types for peace of mind.

Need Help Choosing the Right Locker Sizes?

At Lockers for Schools, we supply a wide range of school lockers in multiple sizes, colours, and finishes—designed specifically for UK educational environments. Whether you're kitting out a primary corridor or refurbishing a sixth form block, we’ll help you find a solution that fits your space, students, and budget.