Per mille

{{Main|Blood alcohol concentration}}

Promille and permille are likely best known as shorthand terms for Blood Alcohol Concentration, where 1 promille corresponds to 1 gram of alcohol per liter of blood.{{cite web |title=Promille vs BAC: the difference and how much promille is 1 BAC |url=https://alcosafe.be/en/blogs/onze-webshop/promille-vs-bac-het-verschil-en-hoeveel-promille-is-1-bac |website=AlcoSafe |access-date=24 September 2023 |language=en}} Promille is used in the legal limits of blood-alcohol content for driving a road vehicle in some countries: for example: 0.5‰ or 0.8‰.{{cite web |title=Blood alcohol level (BAL) |publisher=Health Research Board (Ireland) |url=https://www.drugsandalcohol.ie/glossary/info/blood_alcohol_level }}

{{Main|Cost per mille}}

Cost per mille (CPM), the price of 1000 units, may be used for views of banner and display advertising, and for emails delivered by email service providers.

In UK insurance usage, the cost per mille is the rate per £1000 of insured value.{{cite dictionary |title=A Dictionary of Finance and Banking |edition=4 |editor1=Jonathan Law |editor2=John Smullen |entry=Per mille |entry-url=https://www.oxfordreference.com/display/10.1093/oi/authority.20110803100318315}} In India, the premium per mille is the rate expressed as thousandths of the sum assured.{{cite web |title=Avoidable loss due to imprudent underwriting of Group Personal Accident Policy |url=https://cag.gov.in/uploads/download_audit_report/2019/Chapter_3_Ministry_of_Finance_of_Report_No_13_of_2019_Compliance_Audit_Observations_Union_Government_Commercial.pdf |publisher=Comptroller and Auditor General of India |date=March 2019}}

{{Main|Grade (slope)}}

File:50 per mille.png. The 50‰ grade is equivalent to 50{{nbsp}}m/km or 5%.]]

Gradients (in some countries in Europe) may be expressed as mm/m or m/km, and written with the per mille symbol.{{cite web |title=Directives pour la mesure de l'uni des routes et l'étalonnage des appareils |publisher=World Bank |author1=Michael W. Sayers |author2=Thomas D. Gillespie |author3=William D.O. Paterson |url=https://documents1.worldbank.org/curated/en/864001468334203776/pdf/WTP460PUB0FREN0s0Appareils000French.pdf |page=2 |quote=L'indice IRI est une mesure de l'uni des routes standardisée, apparentée aux mesures obtenues à l'aide des appareils de type-réponse. Les unités recommandées sont : les mètres par kilomètres (m/km) = millimètres par mètres (mm/m) = pente x 1000. |lang=fr |date=January 1986}}

Per mille may be used to express stable-isotope ratios—for example: "δ¹³C was measured at −3.5‰"

In Italy, it is possible to nominate a charity or charities to receive "five per mille" (5‰) of personal taxation payments.{{cite web |title=Five per thousand—how does it work and how is it calculated? |url=https://n26.com/en-it/blog/five-per-thousand-how-does-it-work-and-how-is-it-calculated |publisher=N26 (bank) |date=22 June 2021 |access-date=19 November 2023}}

{{Main|Property tax}}

Property taxation rates may be expressed as the millage rate (U.S.) or mill rate (Canada), from mill (currency), one thousandth of a dollar.

{{Main|Quantile}}

Permille may also be used to express a 1000-quantile ("999th permille"),{{Cite book |last1=Walker |first1=Helen Mary |url=https://books.google.com/books?id=ogYnAQAAIAAJ&q=permille |title=Elementary Statistical Methods |last2=Lev |first2=Joseph |date=1969 |publisher=Holt, Rinehart and Winston |isbn=978-0-03-081130-2 |language=en}}{{cite thesis |last1=Valentijn |first1=Floris Arnold |title=Senescent cell accumulation & Research-based undergraduate education|place=Utrecht University |date=21 September 2022 |doi=10.33540/1121|doi-access=free}} but this usage is rare and largely obsolete. Modern publications instead use fractional percentiles ("99.9th percentile").{{cite journal |last1=Knoppert |first1=Sebastiaan N |last2=Keijzer-Veen |first2=Mandy G |last3=Valentijn |first3=Floris A |last4=van den Heuvel-Eibrink |first4=Marry M |last5=Lilien |first5=Marc R |last6=van den Berg |first6=Gerrit |last7=Haveman |first7=Lianne M |last8=Stokman |first8=Marijn F |last9=Janssens |first9=Geert O |last10=van Kempen |first10=Sven |last11=Broekhuizen |first11=Roel |last12=Goldschmeding |first12=Roel |last13=Nguyen |first13=Tri Q |title=Cellular senescence in kidney biopsies is associated with tubular dysfunction and predicts CKD progression in childhood cancer patients with karyomegalic interstitial nephropathy |journal=The Journal of Pathology |date=December 2023 |volume=261 |issue=4 |pages=455–464 |doi=10.1002/path.6202|doi-access=free|pmid=37792603 }}

{{Main|Salinity}}

Seawater salinity is often expressed per mille. Average marine salinity is about 35 parts per thousand or 35‰ (3.5%).{{cite dictionary |entry=Per mille |title=Glossary of Meteorology |entry-url=https://glossary.ametsoc.org/wiki/Per_mille |publisher=American Meteorological Society |date=2022}}

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• Percentage point difference of 1 part in 100
• Percentage (%) 1 part in 100
• Basis point (bp) difference of 1 part in 10,000
• Permyriad (‱) 1 part in 10,000
• Per cent mille (pcm) 1 part in 100,000

• Parts-per notation
• Per-unit system
• Percentile
• Fineness of precious metals (given as "0.000-fine")

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Category:1000 (number)

Category:Typographical symbols