# Best Safe 2026: The Box Weighs 1.87kg Source: https://www.ranked10.co.uk/home-office/best-safe Published: 2026-09-11 | Updated: 2026-09-11 | Prices checked on Amazon UK on 2026-09-11 A safe protects things with mass, and mass is the specification this category hides. Three safes here have identical 6.6-litre interiors and weigh 1.87kg, 2.04kg and 2.6kg — a 39 per cent difference in steel between them, invisible in any photograph. The largest safe in the ranking, a 14-litre Amazon Basics with 29,924 ratings, publishes no weight at all, and the only hint comes from a buyer: not too heavy, bolts to wall or floor. When the number that matters is missing, the reviews are the specification. The listings are candid in other ways, sometimes accidentally. The best-selling 6.6-litre box lists Portable among its special features, which is the most honest description of a 2kg steel box anyone could write. The 12-inch Cathedral box ships with a bolt-down kit and is also listed as Portable in the same table. And the most useful sentence on any of these pages comes from a reviewer of the cheapest 6.6-litre safe: saved from the little sticky fingers in my house, always had money go missing, now there is a lock on it. Most boxes this size are bought against family and visitors, not burglars, and that changes what you should spend. The category's claims deserve the same care. One £23.44 box advertises fireproof and waterproof as well as secure, and quotes no standard: a fire-rated safe has an insulating layer and a tested rating, which is not something a price tag of £23 pays for. Capacities are quoted in litres, in cubic feet on that same listing, and in cash-tin terms like 12 inches. And the products are not all boxes: the second most-reviewed item here is a book-shaped diversion safe, whose entire purpose is to be looked past rather than forced. Read the weight, decide who you are protecting against, then pick. ## The ranking ### 1. Amazon Basics Steel Security Safe with Digital Keypad, 14 Litres - Price: £57.16 | Amazon rating: 4.5 from 29,924 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/amazon-basics-14l-safe - Buy on Amazon: https://www.amazon.co.uk/dp/B00UG9HB1Q?tag=ranked10-21 The most-reviewed safe here at 29,924 ratings: 14 litres, a keypad and a bolt-down kit — and no weight published. The most-reviewed product in this ranking by a factor of three: 29,924 ratings at 4.5 stars with 71 per cent five-star and 4 per cent one-star, for £57.16. It is a 35 x 25 x 25cm electronic safe with a 14-litre interior, a keypad with three indicator lights, two emergency override keys and a bolt-down kit in the box. What it does not publish is its weight — nor does any other large safe here. The three 6.6-litre boxes in this ranking are open about theirs: 1.87kg, 2.04kg and 2.6kg. This one, more than twice their size, gives no figure at all, and the evidence comes from a buyer instead: not too heavy, bolts to wall or floor, good for my purpose. That is the honest state of this category — a safe is bought for weight and steel, and the specification tables leave you to infer both. The design is the standard arrangement done well: the keypad takes four AA batteries, which are not included, and the two override keys cover a forgotten code or a flat battery. The reviews come from long-term owners rather than first impressions: I like the two choices of opening, and I have had it over a year now. At £57.16 it is the third-dearest product here and the only one with real internal volume. Pros: 29,924 ratings at 4.5 stars: three times the next sample here; 14 litres of interior, the largest real safe capacity collected; A keypad with two emergency override keys; A bolt-down kit included; 4 per cent one-star ratings, the lowest rate among the safes Cons: No weight published, unlike the 6.6-litre boxes here; £57.16: the third-dearest product in this ranking; Batteries are not included for the keypad; A buyer describes it as not too heavy, which says it can be moved ### 2. Amazon Basics Portable Security Lock Box Safe with Combination Lock, Large - Price: £20.91 | Amazon rating: 4.4 from 9,881 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/amazon-basics-lock-box - Buy on Amazon: https://www.amazon.co.uk/dp/B077K3FJHC?tag=ranked10-21 The best seller in Amazon's cabinet safe category: a 4.2cm-high locked tray with 9,881 ratings, which is a lock box rather than a safe. The best seller in Amazon's cabinet safes category, and the honest starting point for this ranking: £20.91 for a steel lock box with a mechanical combination lock, 21.8 x 15.5cm and just 4.2cm tall, weighing little enough to carry in one hand. It carries 4.4 stars from 9,881 ratings with 72 per cent five-star and 5 per cent one-star. Four centimetres is the specification that matters. A box that shallow cannot be bolted to a floor and does not pretend to be a safe: it is a locked tray for documents, cash and jewellery, with a foam-padded interior and a combination dial. The listing calls its steel anti-pry, which is a fair description of the lid; what it does not do is stop someone walking off with the whole box. The 5 per cent of one-star ratings are mostly about the dial and the latch. The reviews say what the product is: remarkably good quality for a very reasonable price, easy to change the code, a lovely little safe for my needs. In a category where heavier boxes weigh 2kg or more, this one is doing something different — it is a locked drawer rather than a bolted box, and for documents in a house that is enough. Pros: 9,881 ratings at 4.4 stars, ranked 1st in cabinet safes; £20.91: the cheapest credible lock box here; A mechanical combination lock, so no keys to lose; Foam-padded interior with a foam mat; 4.2cm deep, so it fits in a drawer or a filing cabinet Cons: 4.2cm deep: a locked tray rather than a safe; It can be carried away whole; nothing fixes it down; 5 per cent of its 9,881 ratings are one-star; Anti-pry steel describes the lid, not the body ### 3. Amazon Basics Book Safe with Combination Lock, Large - Price: £12.49 | Amazon rating: 4.3 from 15,914 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/amazon-basics-book-safe - Buy on Amazon: https://www.amazon.co.uk/dp/B078HDCWXM?tag=ranked10-21 First in Amazon's diversion safe category with 15,914 ratings: a £12.49 lock box shaped like a book, holding 2 litres. The second most-reviewed product in this ranking and first in its own category: £12.49 for a lock box made to look like a book, 23.9cm tall and 5.6cm deep, with a combination lock and two litres of space inside. It carries 4.3 stars from 15,914 ratings with 69 per cent five-star and 6 per cent one-star. Its category name is the honest part: a diversion safe. This is not a box that resists a thief, it is a box a thief does not look at, and the listing says as much by recommending it be stored between two other books on a shelf. The cover and spine are fabric and there are no paper pages, and the reviews are entirely about how convincing it looks: so real looking, very realistic and practical. As a place for a passport, a spare key or a few hundred pounds it does a job no steel box does — it hides in plain sight on a shelf where a 2kg bolt-down safe would be a target. The 6 per cent of one-star ratings are about the lock and the hinge, and at two litres it is smaller inside than it looks, which is the trade for a spine that fits a shelf. Pros: The cheapest product in this ranking at £12.49; 15,914 ratings at 4.3 stars: the second-deepest sample here; Ranked 1st in Amazon's diversion safe category; Fabric cover and spine designed to look like a real book; Two litres of space, enough for a passport and documents Cons: It is a diversion, not a safe: it resists nothing; 6 per cent of its 15,914 ratings are one-star; Two litres is smaller inside than the outside suggests; No paper pages, and the lock is basic ### 4. CDC DIGI 6.6L Digital Steel Safe with Keypad and Two Keys - Price: £25.99 | Amazon rating: 4.3 from 4,245 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/cdc-6-6l-digital - Buy on Amazon: https://www.amazon.co.uk/dp/B01BZPPFS0?tag=ranked10-21 A 6.6-litre digital safe whose own special-features field says Portable — £25.99, with 4,245 ratings. The most-reviewed of the small safes here: 4,245 ratings at 4.3 stars, 67 per cent five-star and 8 per cent one-star, for £25.99. It measures 23 x 17 x 17cm — 6.6 litres — in alloy steel, with a digital keypad, two backup keys, expansion bolts in the box and a shelf inside. The listing describes it in a way no other does: its special features field says Portable. That is the whole argument about small safes in one word from the seller. A 6.6-litre steel box that the listing calls portable is a box somebody can carry out of the house, and the bolts it ships with are the only thing between it and that outcome. The bolts are in the box precisely because the weight is not. For what it is, the reviews are positive: excellent value for money, arrived with care, will do the job. It is the right box for documents, a passport and a few days' cash, and the wrong box for anything you would miss if the entire safe left with it. Pros: 4,245 ratings at 4.3 stars: the most-reviewed small safe here; A digital keypad with two backup keys; Expansion bolts included, so it can be fixed down; A shelf inside the 6.6 litres; £25.99, mid-price among the 6.6-litre boxes Cons: Listed as a portable special feature: it can be carried off; 8 per cent of its 4,245 ratings are one-star, the worst of the 6.6L group; Bolts are supplied but not always used; 6.6 litres holds documents, not much else ### 5. Requisite Needs Metal Money Box Tin, 6 Inch Steel Cash Safe with Lock - Price: £12.10 | Amazon rating: 4.6 from 1,232 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/requisite-money-tin - Buy on Amazon: https://www.amazon.co.uk/dp/B09S3RHM38?tag=ranked10-21 The lightest box in the ranking at 345g and the best-rated — a steel cash tin that takes a £50 note, with 1,232 ratings. The lightest box in this ranking and the best-rated: £12.10 for a 15.2 x 12.7cm steel cash tin weighing 345 grams — a sixth of a 6.6-litre safe — with a key lock, two keys and an internal cash tray with two compartments. It carries 4.6 stars from 1,232 ratings with 73 per cent five-star and 2 per cent one-star, the cleanest record here. At 345 grams it is a tin, and its own category says so: it is first in Amazon's cash box category, not in safes. What a tin does that a safe does not is organise: the tray separates notes from coins, and the reviews include the practical detail that it fits any note including a £50. In the hand it is a lockable box for petty cash, a float or a child's savings, and the 12.7cm width is the specification that decides what fits. The honest complaint worth quoting is this one: the top section falls down a lot, but it does the job. Nothing in this ranking stops a determined thief, and this is the cheapest and lightest way to keep cash and coins in one place with a lock on it. Pros: 4.6 stars from 1,232 ratings: the best record here; Only 2 per cent one-star ratings; 345g: the lightest box in this ranking; A two-compartment cash tray inside, and two keys; Takes any note including a £50, per a reviewer Cons: A tin, not a safe: it resists nothing; One reviewer finds the top tray falls down often; 1 litre of space and 12.7cm wide; It can be carried away in one hand ### 6. Bonsaii 6.6-Litre Small Steel Safe Box with Key and Expansion Bolts - Price: £18.69 | Amazon rating: 4.4 from 630 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/bonsaii-6-6l - Buy on Amazon: https://www.amazon.co.uk/dp/B0D6X8D1F4?tag=ranked10-21 The cheapest 6.6-litre safe here at £18.69 — and one of the few that ships the bolts you need to fix it down. The cheapest of the 6.6-litre safes here at £18.69, and the lightest of them at 2.04kg: 17 x 23 x 17cm in SPCC steel with a flat key lock, a pry-resistant door and concealed hinges. Everything needed to fix it down is in the box — a floor mat, two emergency keys and two expansion bolts — and it carries 4.4 stars from 630 ratings with 72 per cent five-star and 4 per cent one-star. Two kilos is the number that decides the argument. A box this light can be picked up by anyone, so the bolts are not an optional extra, they are the security: bolted into a floor or a shelf, the steel and the pry-resistant door have to be defeated; unbolted, the safe simply leaves. That this listing includes them, where the 6.6-litre box above leaves you to buy them separately, is worth more than the £5 it saves. The reviews are short and practical: perfect size, spacious inside, good value for money — and one noting three keys where the listing mentions two. Harmless, but a reminder to check what arrives. Pros: £18.69: the cheapest 6.6-litre safe here; Expansion bolts, a floor mat and two keys included; A pry-resistant door with concealed hinges; 2.04kg: lighter than most boxes of the same size; 630 ratings at 4.4 stars, 72 per cent five-star Cons: Key lock only: no keypad option; 2.04kg is still light enough to carry away if unbolted; 4 per cent of its 630 ratings are one-star; A reviewer counted three keys where the listing says two ### 7. SINZUX 6.6L Digital Steel Safe with Keypad, 2.6kg - Price: £23.99 | Amazon rating: 4.5 from 417 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/sinzux-6-6l - Buy on Amazon: https://www.amazon.co.uk/dp/B0CW8TPVBQ?tag=ranked10-21 The heaviest 6.6-litre safe here at 2.6kg — the most steel for the same internal volume. The heaviest of the three 6.6-litre safes here at 2.6kg, and the same size as the others: 23 x 17 x 17cm in alloy steel, with a digital keypad, two keys, a shelf and an included mat. It costs £23.99 and carries 4.5 stars from 417 ratings with 75 per cent five-star and 5 per cent one-star. Weight is the specification buyers cannot see in a photograph and the one that matters most here. Three safes with identical internal dimensions weigh 1.87kg, 2.04kg and 2.6kg — a difference of 39 per cent between the lightest and this one — and the heavier box is the one with more steel in its walls and door. The listing calls it thickened alloy steel with double protection, which is marketing language for the same fact. Its materials table also gives the top material as wood, which no steel safe has: a data quirk rather than a description. What the reviews support is the practical part — it opens with either batteries or a backup key, arrived as stated, and setting your own code is easy. At £23.99 it costs £5.30 more than the cheapest box of the same size and buys the extra half-kilogram. Pros: 2.6kg: the heaviest 6.6-litre safe here; The same interior volume with 39 per cent more weight than the lightest; Digital keypad with two backup keys; A shelf and a floor mat included; 417 ratings at 4.5 stars, 75 per cent five-star Cons: 5 per cent of its 417 ratings are one-star; 2.6kg still leaves it carryable if not bolted down; The materials table wrongly lists the top as wood; £5.30 more than the cheapest box of the same size ### 8. Lucn Home Safe 8.5L, Fireproof and Waterproof Digital Steel Box - Price: £23.44 | Amazon rating: 4.4 from 330 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/lucn-8-5l - Buy on Amazon: https://www.amazon.co.uk/dp/B0DT6W3GQ2?tag=ranked10-21 A £23.44 box that claims fireproof, waterproof and high security — with a capacity given in cubic feet, an American unit. A steel box for £23.44 that makes three claims at once: fireproof, waterproof and high security. It measures 31 x 20 x 20cm, holds 8.5 litres according to its title, and its capacity field gives the same space as 0.3 cubic feet — an American unit in a British listing, where every other box here quotes litres. It carries 4.4 stars from 330 ratings with 72 per cent five-star and 6 per cent one-star. The claims are worth reading carefully because of the price. Fireproofing is a real specification with a real cost: a fire-rated safe has an insulating layer and is tested to a standard. At £23.44, what this listing means by the word is impossible to verify from the page, and no standard is quoted. What the reviews describe is what it actually is — brilliant for stopping prying eyes, solid construction, sensibly priced. Nobody in them has put it through a fire. At 20cm wide and 31cm deep it is the deepest box in this ranking after the 14-litre safe, and the keypad with a backup key is the standard arrangement. Buy it as a locked box for documents and cash, and treat the fire and water claims as unmeasured until a standard is named. Pros: 8.5 litres for £23.44, with 31 x 20 x 20cm of internal space; A digital keypad with a backup key; 330 ratings at 4.4 stars, 72 per cent five-star; Ranked 2nd in Amazon's cabinet safes category; Reviewers describe it as solid and good value Cons: Fireproof and waterproof are claimed with no standard quoted; Capacity given as 0.3 cubic feet rather than litres; 6 per cent of its 330 ratings are one-star; A box this size and weight can be carried away ### 9. Cathedral Products 12 Inch Lockable Security Box with Bolt Down Kit - Price: £16.25 | Amazon rating: 4.5 from 2,805 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/cathedral-12-inch - Buy on Amazon: https://www.amazon.co.uk/dp/B001VMAPRY?tag=ranked10-21 A £16.25 steel box that ships a bolt-down kit and is listed as Portable — the contradiction of this category in one product. A steel security box for £16.25, 12 inches (about 30cm) across, with a key lock, a bolt-down kit in the box and — in the same specification table — Portable as a special feature. It carries 4.5 stars from 2,805 ratings with 72 per cent five-star and 2 per cent one-star, the second-cleanest record here. That pairing is the contradiction this ranking is about, printed on one product page. The listing's own bullet says it can be bolted down using the fixings included, providing maximum protection; the special features field says portable. Both are true: it is a box you can fix down and a box you can carry, and which of those it ends up being is the buyer's decision, not the listing's. The reviews cover both lives of the product: nice and solid, it did the job protecting knives on camp — one carried it, apparently — and another notes it comes with two keys and is big enough for a lot of items. At £16.25 with a bolt-down kit included, it is the cheapest box here that can be made immovable. Pros: £16.25: the cheapest box here with a bolt-down kit; 2,805 ratings at 4.5 stars, only 2 per cent one-star; Powder-coated steel with a key lock and two keys; Big enough for documents and a lot of items, per reviewers; 12 inches wide, so it fits a shelf Cons: The same listing calls it Portable as a special feature; No weight published; A key lock only, with no keypad option; It is a box rather than a fire-rated safe ### 10. CDC DIGI Safe Box for Office and Home, 6.6L Steel with 4 Keys - Price: £19.99 | Amazon rating: 4.5 from 35 ratings - Full review: https://www.ranked10.co.uk/home-office/best-safe/cdc-digi-4-keys - Buy on Amazon: https://www.amazon.co.uk/dp/B0GWHM7M3M?tag=ranked10-21 The lightest 6.6-litre safe in the ranking at 1.87kg — and a reviewer who explains what most of these boxes are really for. The lightest of the 6.6-litre safes here at 1.87kg, and the cheapest at £19.99: 23 x 17 x 17cm in alloy steel with a double-row flat-head key lock, concealed hinges and four keys supplied. It carries 4.5 stars from 35 ratings — the smallest sample in this ranking — with 69 per cent five-star and 6 per cent one-star. Weight is the whole story in this group. Three boxes with the same 6.6-litre interior weigh 1.87kg, 2.04kg and 2.6kg, a 39 per cent difference in steel between the lightest and the heaviest. This is the lightest, so it is the one to bolt down first or not buy at all: under 2kg, its lock and pry-resistant door are the only obstacles. Its best review is also the most honest description of the category: saved from the little sticky fingers in my house, always had money go missing, now there is a lock on it. Most safes of this size are bought to stop a family member or a visitor, not a burglar, and at £19.99 that is exactly what this box is for. With 35 ratings it is the least proven product in this ranking. Pros: £19.99: the cheapest 6.6-litre safe here; 1.87kg against 2.6kg for the heaviest of the same size; Four keys supplied, with a double-row flat-head lock; Concealed hinges and a pry-resistant door; A reviewer reports it stopping money going missing at home Cons: Only 35 ratings: the thinnest sample in this ranking; 1.87kg is the least steel of any 6.6-litre box here; 6 per cent of its 35 ratings are one-star; Key lock only, with no keypad ## Verdict What we would buy. If you need internal volume, the Amazon Basics 14-litre safe at £57.16 is the only real safe here with 29,924 ratings behind it — and bolt it down, because it publishes no weight to reassure you. For a small bolt-down box, the Bonsaii 6.6L at £18.69 is the best value, and the only one that includes the expansion bolts that make 2kg of steel mean anything. The SINZUX at £23.99 is the heaviest box of that size if you want the most steel. For documents in a drawer, the Amazon Basics lock box at £20.91 is the product most people actually need. And if the goal is hiding something rather than locking it, the £12.49 Book Safe was rated 4.3 stars by 15,914 people. What the listings will not tell you. Weight is the specification to look for and the one most often missing — a box under 2kg can be carried off in one hand unless it is bolted down. A bolt-down kit is only useful if you use it, and only the Bonsaii, the Cathedral and the 14-litre safe include one. Fireproof and waterproof are measured specifications with standards; where no standard is quoted, treat the words as decoration. A lock box, a tin and a diversion safe are different products from a safe: the first two organise, the third hides, and none of them resists. And decide who you are protecting against, because a locked box defeats a family member and does not defeat a burglar. Everything on this page comes from the Amazon listings, collected on 11 September 2026.