comparison

UK Courier Max Weight & Size Limits 2026

Q: What is the maximum weight for InPost lockers?

InPost lockers accept parcels up to 15 kg in every compartment size; the 25 kg figure quoted on older sites is out of date. In practice the compartment depth (8, 19 or 41 cm) is the real constraint; the largest parcel InPost takes is 41 × 38 × 64 cm.

Q: Which UK courier accepts the heaviest parcels?

Royal Mail's Medium Parcel format accepts up to 20 kg and DHL home collection through eBay Simple Delivery takes up to 30 kg. InPost, Evri and the former Yodel network (now InPost) are all limited to 15 kg. Yodel's old 30 kg limit disappeared when the brand became InPost in July 2026.

Q: What is the largest parcel Royal Mail accepts?

Royal Mail's Medium Parcel format accepts up to 61 × 46 × 46 cm and 20 kg. Small Parcel is limited to 45 × 35 × 16 cm and 2 kg, and Large Letter to 35.3 × 25 × 2.5 cm and 750 g (1 kg on Tracked). Anything bigger needs Parcelforce or a courier such as Evri or DHL.

Sending something bulky or heavy? Here is exactly what each UK courier accepts in 2026: maximum weight, dimensions and size formats for InPost, Evri and Royal Mail, plus what replaced Yodel's old 30 kg service.

Quick Reference

Courier	Max Weight	Max Dimensions
InPost	15 kg	41 × 38 × 64 cm
Evri	15 kg	Longest side 120 cm
Royal Mail	20 kg	61 × 46 × 46 cm

Last verified: 6 October 2026 against each courier's official size and weight page.

InPost

£1.99 – £5.99

Max Weight

15 kg (every compartment size)

Label Type

QR code (printable label optional)

Drop-off Methods

InPost locker (24/7 at most sites), InPost Shop, Door-to-door collection via InPost Direct

Max Dimensions

41 × 38 × 64 cm (Large compartment)

Locker Sizes

Small (A)8 × 38 × 64 cmT-shirts, accessories, flat items

Medium (B)19 × 38 × 64 cmJeans, folded jumpers, shoes without box

Large (C)41 × 38 × 64 cmCoats, shoe boxes, bundles

Depth is the key dimension; width and height are the same for every compartment. InPost cut its weight limit to 15 kg; the 25 kg figure on older sites is out of date. No batteries, liquids or aerosols.

Evri

£2.62 – £10.28

Max Weight

15 kg (ParcelShop, locker and courier collection)

Label Type

QR code or printed label

Drop-off Methods

Evri ParcelShop (9,000+), Evri locker, Courier collection from home

Max Dimensions

Longest side 120 cm; length + 2 × (width + height) no more than 245 cm (Evri lockers 62 × 57 × 39 cm)

Locker Sizes

Evri locker (largest compartment)62 × 57 × 39 cmBoxed shoes, coats, bundles; slightly bigger than an InPost Large

The same 15 kg / 120 cm / 245 cm limits apply to ParcelShops and home collection. Some ParcelShops refuse very large parcels they cannot store; lockers have a fixed size.

Royal Mail

£1.55 – £16.05

Max Weight

20 kg (Medium Parcel)

Label Type

Printed label, or QR code via Vinted, eBay and Etsy

Drop-off Methods

Post Office counter, Collect+ / Royal Mail Shop, Royal Mail locker, Parcel postbox (prepaid, 44 × 35 × 16 cm, 2 kg), Parcel Collect from home

Max Dimensions

61 × 46 × 46 cm (Medium Parcel); Small Parcel 45 × 35 × 16 cm, Large Letter 35.3 × 25 × 2.5 cm

Locker Sizes

Royal Mail locker, grey compartment34 × 61 × 58 cmTracked and 1st/2nd Class parcels (not Special Delivery)

Royal Mail locker, red compartment42 × 43 × 66 cmBulkier boxed parcels

Formats: Large Letter 750 g (1 kg on Tracked), Small Parcel 2 kg, Medium Parcel 20 kg. Parcel postboxes take prepaid barcoded parcels only. Special Delivery must go over a Post Office counter.

Which Courier Should I Use for Heavy or Large Items?

For parcels up to 15 kg that fit in a locker: InPost is usually cheapest, at £1.99 to £3.99 to another locker when you send direct. The Large (C) compartment (41 × 38 × 64 cm) handles most coats, boots and bundles. Measure the packed depth; that is what decides whether the door closes.

For parcels up to 15 kg that are too long or wide for a locker: Evri accepts up to 120 cm on the longest side (245 cm combined) at ParcelShops, lockers and home collection, and is usually the cheapest option between 2 and 15 kg.

For heavy items over 15 kg: Royal Mail's Medium Parcel takes up to 20 kg (£13.70 by 2nd Class online since 5 October 2026), and on eBay Simple Delivery DHL home collection takes up to 30 kg. Yodel's 30 kg service no longer exists; the network became InPost in July 2026 with a 15 kg limit.

Frequently Asked Questions

What is the maximum weight for InPost lockers?

15 kg in every compartment size. InPost reduced the limit from the 25 kg still quoted on older websites, and the same 15 kg applies to InPost Shops and to door-to-door collection through InPost Direct. In practice the compartment depth (8, 19 or 41 cm) is the real constraint, and the biggest parcel InPost takes is 41 × 38 × 64 cm.

Which UK courier accepts the heaviest parcels?

Royal Mail's Medium Parcel format takes up to 20 kg, and DHL home collection via eBay Simple Delivery takes up to 30 kg (120 × 80 × 80 cm). InPost, Evri and the former Yodel network are all capped at 15 kg. Yodel's old 30 kg / 150 cm limits disappeared when the brand became InPost on 17 July 2026.

What is the largest parcel Royal Mail accepts?

Medium Parcel: 61 × 46 × 46 cm and 20 kg. Small Parcel: 45 × 35 × 16 cm and 2 kg. Large Letter: 35.3 × 25 × 2.5 cm and 750 g (1 kg on Tracked). Parcel postboxes only take prepaid parcels up to 44 × 35 × 16 cm and 2 kg, and Royal Mail lockers have 34 × 61 × 58 cm and 42 × 43 × 66 cm compartments.

Does Evri accept oversized parcels?

Up to a point. Evri's limits are 15 kg, a longest side of 120 cm and a combined size (length plus twice the width plus twice the height) of 245 cm, at ParcelShops, lockers and for home collection alike. Evri lockers have a fixed maximum of 62 × 57 × 39 cm, and some ParcelShops refuse large parcels they cannot store behind the counter; book a courier collection for those.