# Laundry datasets --- Open reference data # Laundry datasets 4 reference tables, 63 rows in total, published as JSON and CSV so they can be read by a machine instead of scraped from a page. Every row carries the publisher it came from. - [ISO 3758 care symbols 36](#care-symbols) - [Bleach safety by fibre 8](#bleach-safety-by-fibre) - [Tumble drying by fibre 7](#tumble-dry-by-fibre) - [Laundry weight by item 12](#laundry-weight) ## What these are, and what they are not These are **sourced compilations**, not laboratory results. Launderwise does not operate an in-house wash-test rig, so no figure here is a measurement we made. Each table gathers what standards bodies, manufacturers or a named third-party reference already publish, normalises it into one shape, and keeps the attribution attached to the row rather than to a footnote. Where a table has no standards body behind it, we say so on the card instead of letting the format imply an authority the figures do not have. Every card carries one of these badges: - Standards and manufacturer sources Every row cites a standards body or the manufacturer whose product the rule concerns. - Secondary source No standard defines these figures. They come from a third-party publisher, are approximate, and should be treated as estimates rather than as an authority. [How we research and check every guide ](/how-we-test/index.md) ## How they stay honest Each export is generated from the same source the human page renders — the typed module behind the visible comparison table, or the glossary entries behind the care-symbol pages. There is no second copy to fall out of date. For the three fibre and weight tables a release check regenerates the file and compares it byte for byte against that source, so a download that had drifted would fail the build rather than ship. The care-symbol export is the exception, and we would rather say so than round it up: it is checked on symbol count against the glossary, not byte for byte. Files carry no timestamp on purpose: they are derived entirely from content, so a build clock would change the bytes without changing a single fact. Versioned snapshot ## Reproduce or cite v2026.08.30 This frozen release preserves the exact eight JSON and CSV distributions described here on 2026-08-30. The manifest records sources, methods, file sizes and hashes; the checksum file verifies every data file byte for byte; and the citation file supplies reusable collection metadata. DOI status: **not assigned**. We will publish one only after an authorised repository issues it. [ Release manifest ](/data/releases/v2026.08.30/manifest.json)[ Citation file ](/data/releases/v2026.08.30/CITATION.cff)[ Verify SHA-256 ](/data/releases/v2026.08.30/SHA256SUMS)[ Read snapshot notes](/data/releases/v2026.08.30/README.md) ### Frozen distributions - [ISO 3758 care symbols JSON](/data/releases/v2026.08.30/care-symbols.json) - [ISO 3758 care symbols CSV](/data/releases/v2026.08.30/care-symbols.csv) - [Bleach safety by fibre JSON](/data/releases/v2026.08.30/bleach-safety-by-fibre.json) - [Bleach safety by fibre CSV](/data/releases/v2026.08.30/bleach-safety-by-fibre.csv) - [Tumble drying by fibre JSON](/data/releases/v2026.08.30/tumble-dry-by-fibre.json) - [Tumble drying by fibre CSV](/data/releases/v2026.08.30/tumble-dry-by-fibre.csv) - [Laundry weight by item JSON](/data/releases/v2026.08.30/laundry-weight.json) - [Laundry weight by item CSV](/data/releases/v2026.08.30/laundry-weight.csv) Reuse ## Licence and attribution The datasets are published under the [Creative Commons Attribution 4.0 International (CC BY 4.0)](https://creativecommons.org/licenses/by/4.0/) — the same licence the structured data on this page declares. In practice: copy them, adapt them and redistribute them in any medium, for any purpose including commercially, as long as you credit Launderwise with a link back to this page, link the licence and say if you changed anything. There is no share-alike clause: whatever you build on them stays under whatever terms you choose. The upstream sources keep their own terms. Attributing Launderwise does not transfer any right over ISO's standard text, a manufacturer's guidance or a third-party publisher's figures — the per-row source column is there so you can go and check the original. Both formats are served with an open cross-origin policy, so a page or script on another domain can fetch them directly. The JSON carries a `count`, a `description`, an `isBasedOn` field and the row array named on each card below; the CSV carries the same rows with a header line. Found an error, or a figure that has moved since we compiled it? Tell us and we will check it against the original source — [get in touch](/contact/index.md). ## The datasets ### ISO 3758 care symbols 36 symbols · JSON and CSV Standards and manufacturer sources Every ISO 3758 / GINETEX laundry care symbol, decoded with what it means and what to do, each backed by a cited source. Machine-readable companion to the care-symbol decoder at launderwise.com/glossary/. #### How it was compiled Built from the glossary entries published at /glossary/: one row per care symbol, each carrying the same citation as its glossary page. Every row cites ISO 3758:2012; the symbol set itself is the care-labelling code published by GINETEX. The wording is our own reading of the standard, not a reproduction of it. #### Fields - category - term - slug - careSymbolId - definition - whatItMeans - whatToDo - url - sources Rows live under `symbols` in the JSON. Based on: ISO 3758 / GINETEX care labelling code using symbols #### Sources - [ISO 3758:2012 Textiles — Care labelling code using symbols ](https://www.iso.org/standard/42918.html)— International Organization for Standardization - [Care symbols — the international care-labelling code ](https://www.ginetex.net/gb/labelling/care-symbols.asp)— GINETEX [ Download JSON ](/data/care-symbols.json)[ Download CSV ](/data/care-symbols.csv)[Read the guide: Care-symbol glossary ](/glossary/index.md) ### Bleach safety by fibre 8 fibres · JSON and CSV Standards and manufacturer sources Which bleach is safe on which fibre — chlorine (liquid) vs colour-safe (oxygen) — as a machine-readable table. Fibre rules are Clorox manufacturer guidance; an individual garment is always governed by its care-label bleach symbol (GINETEX). Companion to launderwise.com/blog/what-fabrics-can-you-bleach/. #### How it was compiled Row by row from Clorox's published fabric-safety guidance, which is the bleach maker's own rule for its own product. The care label's bleach symbol governs any individual garment, so the GINETEX routing sits alongside the fibre rule rather than under it. The table is generated from the same typed module that renders the visible chart in the companion guide, so the two cannot drift. #### Fields - fibre - chlorine - oxygen - chlorineVerdict - oxygenVerdict - source Rows live under `entries` in the JSON. Based on: Clorox fabric-safety guidance; ISO 3758 / GINETEX bleach symbol governance #### Sources - [Do Not Bleach Labels: Preventing Damage to Clothes ](https://www.clorox.com/learn/do-not-bleach-clothes-fabric-safety-tips/)— Clorox - [What Is Color Safe Bleach and How To Use It ](https://www.clorox.com/learn/color-safe-bleach-for-colored-clothes/)— Clorox - [Can You Bleach Spandex Fabric? ](https://www.clorox.com/learn/can-you-bleach-spandex-fabric/)— Clorox - [Care symbols — the international care-labelling code ](https://www.ginetex.net/gb/labelling/care-symbols.asp)— GINETEX [ Download JSON ](/data/bleach-safety-by-fibre.json)[ Download CSV ](/data/bleach-safety-by-fibre.csv)[Read the guide: What fabrics can you bleach? ](/blog/what-fabrics-can-you-bleach/index.md) ### Tumble drying by fibre 7 fibres · JSON and CSV Standards and manufacturer sources Which fibres can go in the tumble dryer, and at what heat, as a machine-readable table. The dot heat values are GINETEX; the no-tumble fibre rules cite Woolmark, Woolite, RMIT and the rayon manufacturer. An individual garment is always governed by its care-label tumble symbol. Companion to launderwise.com/blog/what-fabrics-can-you-tumble-dry/. #### How it was compiled The dot heat values are the GINETEX care-symbol definitions. The no-tumble fibre rules each cite the body that states them: Woolmark for wool, Woolite for silk, an RMIT textile scientist for elastane, and Asia Pacific Rayon — the fibre manufacturer — for viscose. Generated from the same typed module that renders the visible chart in the companion guide. #### Fields - fibre - inDryer - rule - verdict - source Rows live under `entries` in the JSON. Based on: GINETEX dot heat; Woolmark / Woolite / RMIT / Asia Pacific Rayon fibre guidance #### Sources - [Care symbols — the international care-labelling code ](https://www.ginetex.net/gb/labelling/care-symbols.asp)— GINETEX - [Machine washable wool ](https://www.woolmark.com/industry/product-development/processing-innovations/machine-washable-wool/)— The Woolmark Company - [How to wash a wool sweater ](https://www.woolmark.com/care/how-to-wash-wool-sweater/)— The Woolmark Company - [How to Wash Silk ](https://www.woolite.us/tips-to-take-care-of-your-clothes/how-to-wash-silk/)— Woolite - [Do I have to rinse out my swimsuit after the pool? A textile scientist has the answer ](https://theconversation.com/do-i-have-to-rinse-out-my-swimsuit-after-the-pool-a-textile-scientist-has-the-answer-270982)— RMIT University / The Conversation - [How to Wash Viscose Properly ](https://www.aprayon.com/en/media-english/articles/how-to-wash-viscose-properly/)— Asia Pacific Rayon [ Download JSON ](/data/tumble-dry-by-fibre.json)[ Download CSV ](/data/tumble-dry-by-fibre.csv)[Read the guide: What fabrics can you tumble dry? ](/blog/what-fabrics-can-you-tumble-dry/index.md) ### Laundry weight by item 12 items · JSON and CSV Secondary source Approximate DRY weights of common laundry items (children / women / men where they differ), as a machine-readable table in grams. Figures are approximate estimates from inthewash.co.uk — no international standard defines per-garment weights — and are carried with row-level provenance. Companion to launderwise.com/blog/how-much-does-laundry-weigh/. #### How it was compiled No international standard defines per-garment weights, so there is no authority to compile from. Every figure is an approximate dry-weight estimate published by In The Wash, a third-party UK consumer site — that attribution is carried on every single row of the export, not just in the header. Two of that page's rows (a dressing gown at 6–8 kg, net curtains at 6.5 kg) are implausibly high and are deliberately excluded. The one hard fact around the table is the definition of a machine's kg rating: dry-textile mass, per EU Regulation 2019/2023. #### Fields - item - category - childGrams - womenGrams - menGrams - unisexGrams - source Rows live under `entries` in the JSON. Based on: inthewash.co.uk per-item dry-weight estimates (secondary); EU Regulation 2019/2023 defines rated capacity in dry-textile mass #### Sources - [Laundry Weight Calculator (UK Guide in kg) ](https://inthewash.co.uk/laundry-and-ironing/laundry-weight-calculator/)— In The Wash - [Commission Regulation (EU) 2019/2023 — Ecodesign requirements for household washing machines ](https://eur-lex.europa.eu/eli/reg/2019/2023/oj/eng)— European Commission [ Download JSON ](/data/laundry-weight.json)[ Download CSV ](/data/laundry-weight.csv)[Read the guide: How much does laundry weigh? ](/blog/how-much-does-laundry-weigh/index.md)