Convert Saudi Riyal (SAR) to Platinum Ounce (XPT)

1 saudi_riyal = 1 saudi_riyal

Exchange rates last updated: May 16, 2026 23:00

Conversion Formula for Saudi Riyal to Platinum Ounce

The formula of conversion of Saudi Riyal to Platinum Ounce is very simple. To convert Saudi Riyal to Platinum Ounce, we can use this simple formula:

1 Saudi Riyal = 7,577.4 Platinum Ounce

1 Platinum Ounce = 0.0001319714 Saudi Riyal

One Saudi Riyal is equal to 7,577.4 Platinum Ounce. So, we need to multiply the number of Saudi Riyal by 7,577.4 to get the no of Platinum Ounce. This formula helps when we need to change the measurements from Saudi Riyal to Platinum Ounce

Saudi Riyal to Platinum Ounce Conversion

The conversion of Saudi Riyal currency to Platinum Ounce currency is very simple. Since, as discussed above, One Saudi Riyal is equal to 7,577.4 Platinum Ounce. So, to convert Saudi Riyal to Platinum Ounce, we must multiply no of Saudi Riyal to 7,577.4. Example:-

Saudi Riyal Platinum Ounce
0.01 Saudi Riyal 75.774 Platinum Ounce
0.1 Saudi Riyal 757.74 Platinum Ounce
1 Saudi Riyal 7,577.4 Platinum Ounce
2 Saudi Riyal 15,154.8 Platinum Ounce
3 Saudi Riyal 22,732.2 Platinum Ounce
5 Saudi Riyal 37,887 Platinum Ounce
10 Saudi Riyal 75,774 Platinum Ounce
20 Saudi Riyal 151,548 Platinum Ounce
50 Saudi Riyal 378,870 Platinum Ounce
100 Saudi Riyal 757,740 Platinum Ounce
500 Saudi Riyal 3,788,700 Platinum Ounce
1,000 Saudi Riyal 7,577,400 Platinum Ounce

Details for Saudi Riyal (SAR) Currency

Introduction : The Saudi Riyal (SAR), symbolized as ﷼, is the official currency of the Kingdom of Saudi Arabia. Managed by the Saudi Central Bank (SAMA), the riyal is subdivided into 100 halalas. It is used for all forms of transactions within the country and plays a significant role in the oil-driven economy. The Saudi Riyal is known for its stability and is often pegged to the US dollar, reinforcing the country's financial strength and global trade relationships. With modern banknotes and coins in circulation, the riyal reflects Saudi Arabia's cultural heritage and economic resilience.

History & Origin : The Saudi Riyal has a history dating back to the early 20th century when the Kingdom of Saudi Arabia was formed in 1932. Prior to the riyal, trade in the region was conducted using a mix of foreign coins and currencies. The riyal was officially introduced to unify the monetary system and support the newly founded state's economy. Initially based on silver coins, the currency later transitioned into banknotes and more advanced denominations. Over time, the riyal became pegged to the US dollar at a fixed rate, enhancing stability and simplifying international transactions, especially in the oil and energy sectors.

Current Use : The Saudi Riyal is the exclusive legal tender used in Saudi Arabia. It is used across all sectors of the economy—from local purchases in souks and supermarkets to large-scale oil export contracts. The currency is also vital for the millions of Muslim pilgrims visiting the country annually for Hajj and Umrah. As Saudi Arabia diversifies its economy through its Vision 2030 initiative, the riyal continues to support infrastructure, technology, tourism, and renewable energy projects. Digital payment systems are growing, but cash still plays a prominent role in daily life across cities and rural areas alike.

Details of Saudi Arabia

Saudi Arabia, located in the Middle East on the Arabian Peninsula, is the largest country in the region and one of the most influential nations in the Islamic world. It shares borders with Jordan, Iraq, Kuwait, Qatar, the United Arab Emirates, Oman, and Yemen, and is bounded by the Red Sea to the west and the Persian Gulf to the east. The country is best known as the birthplace of Islam and home to the religion’s two holiest cities, Mecca and Medina, which draw millions of pilgrims each year.

Economically, Saudi Arabia is a global powerhouse due to its vast oil reserves, making it a leading member of OPEC and a major exporter of petroleum. The economy is heavily reliant on oil, but in recent years, the government has launched Vision 2030, a strategic framework aimed at reducing dependence on oil, developing public service sectors, and diversifying into areas like tourism, entertainment, and technology. Riyadh, the capital city, is a growing hub for finance and development.

Culturally, Saudi Arabia holds deep-rooted traditions linked to Bedouin heritage and Islamic practices. However, it is undergoing significant social reforms, including the promotion of women's rights and the opening of new entertainment and cultural venues. The country’s landscape ranges from vast deserts like the Rub' al Khali to dramatic mountain ranges and beautiful coastlines. With its strategic geopolitical position, historical significance, and ambitious development plans, Saudi Arabia continues to be a central player in regional and global affairs.

Details for Platinum (Troy Ounce) (XPT) Currency

Introduction : Platinum, symbolized as XPT and measured in troy ounces (approximately 31.1035 grams), is a rare and highly valuable precious metal traded globally. It is renowned for its strength, corrosion resistance, and aesthetic appeal, making it important in both industrial applications and luxury goods. While not used as a circulating currency, platinum functions as a commodity asset in global financial markets. It is widely recognized as a hedge against inflation and market volatility. Platinum is traded on major exchanges and is integral to several industries, especially automotive manufacturing, electronics, jewelry, and green technologies.

History & Origin : Platinum was first used by pre-Columbian civilizations in South America, but it gained recognition in the 18th century when European scientists and metallurgists began exploring its properties. It was once considered an unwanted byproduct during gold mining but eventually became valuable for its density and resistance to wear. By the 20th century, platinum was increasingly used in catalytic converters to reduce vehicle emissions and became essential in industrial chemistry and electronics. Its monetary role expanded with the introduction of platinum bullion coins and futures trading. Today, platinum is viewed both as an investment asset and a critical industrial material, especially in the push for clean energy and low-emission technologies.

Current Use : Platinum is not used in day-to-day currency transactions but is a critical asset in commodities and investment portfolios. Investors buy platinum in bars, coins, or through ETFs and futures contracts. It is extensively used in automotive catalytic converters, particularly in diesel engines, as well as in chemical reactors, medical equipment, and renewable energy technologies like hydrogen fuel cells. Platinum’s scarcity and industrial importance make it highly responsive to market changes, environmental policy shifts, and geopolitical developments. Its dual role as both a luxury material and an industrial input underscores its enduring economic and strategic value.

Details of Global (Platinum Commodity Market)

Platinum is a globally significant precious metal, with a concentrated supply chain and widespread demand across many industries. The largest producer of platinum is **South Africa**, which accounts for around 70% of the world’s annual supply. Russia, Zimbabwe, and Canada are also key contributors. These countries possess rich geological reserves and extensive mining operations. South Africa’s Bushveld Complex is one of the most important platinum-bearing geological formations globally, providing critical employment and export revenue for the country.

On the demand side, **automotive industries in the United States, Germany, Japan, and China** are major consumers of platinum, especially for its role in catalytic converters used to curb harmful emissions from vehicles. As governments worldwide tighten environmental regulations, platinum continues to play a central role in emissions control technologies. In recent years, platinum’s application in hydrogen fuel cells and green energy solutions has sparked renewed interest and innovation.

In addition to its industrial use, platinum is a symbol of prestige in the jewelry markets of India, the Middle East, and North America. Its rarity and luster make it a preferred material for high-end jewelry and luxury watches. The medical and chemical sectors also utilize platinum for its stability and biocompatibility, especially in surgical instruments, pacemakers, and laboratory equipment.

Platinum is traded on international exchanges like the NYMEX and the London Platinum and Palladium Market. It is priced in U.S. dollars per troy ounce and is influenced by mining output, global economic conditions, and speculative investment. Despite fluctuations, platinum remains a strategic resource with global economic importance. It bridges luxury, technology, and sustainability, making it a vital component in modern industry and finance.

Convert Saudi Riyal to Other Currencies

Saudi Riyal to United Arab Emirates DirhamUnited Arab Emirates Dirham to Saudi Riyal
Saudi Riyal to Afghan AfghaniAfghan Afghani to Saudi Riyal
Saudi Riyal to Albanian LekAlbanian Lek to Saudi Riyal
Saudi Riyal to Armenian DramArmenian Dram to Saudi Riyal
Saudi Riyal to Netherlands Antillean GuilderNetherlands Antillean Guilder to Saudi Riyal
Saudi Riyal to Angolan KwanzaAngolan Kwanza to Saudi Riyal
Saudi Riyal to Argentine PesoArgentine Peso to Saudi Riyal
Saudi Riyal to Australian DollarAustralian Dollar to Saudi Riyal
Saudi Riyal to Aruban FlorinAruban Florin to Saudi Riyal
Saudi Riyal to Azerbaijani ManatAzerbaijani Manat to Saudi Riyal
Saudi Riyal to Bosnia Herzegovina Convertible MarkBosnia Herzegovina Convertible Mark to Saudi Riyal
Saudi Riyal to Barbadian DollarBarbadian Dollar to Saudi Riyal
Saudi Riyal to Bangladeshi TakaBangladeshi Taka to Saudi Riyal
Saudi Riyal to Bulgarian LevBulgarian Lev to Saudi Riyal
Saudi Riyal to Bahraini DinarBahraini Dinar to Saudi Riyal
Saudi Riyal to Burundian FrancBurundian Franc to Saudi Riyal
Saudi Riyal to Bermudan DollarBermudan Dollar to Saudi Riyal
Saudi Riyal to Brunei DollarBrunei Dollar to Saudi Riyal
Saudi Riyal to Bolivian BolivianoBolivian Boliviano to Saudi Riyal
Saudi Riyal to Brazilian RealBrazilian Real to Saudi Riyal
Saudi Riyal to Bahamian DollarBahamian Dollar to Saudi Riyal
Saudi Riyal to Bhutanese NgultrumBhutanese Ngultrum to Saudi Riyal
Saudi Riyal to Botswanan PulaBotswanan Pula to Saudi Riyal
Saudi Riyal to Belarusian RubleBelarusian Ruble to Saudi Riyal
Saudi Riyal to Belize DollarBelize Dollar to Saudi Riyal
Saudi Riyal to Canadian DollarCanadian Dollar to Saudi Riyal
Saudi Riyal to Congolese FrancCongolese Franc to Saudi Riyal
Saudi Riyal to Swiss FrancSwiss Franc to Saudi Riyal
Saudi Riyal to Chilean Unit Of Account UfChilean Unit Of Account Uf to Saudi Riyal
Saudi Riyal to Chilean PesoChilean Peso to Saudi Riyal
Saudi Riyal to Chinese Yuan OffshoreChinese Yuan Offshore to Saudi Riyal
Saudi Riyal to Chinese YuanChinese Yuan to Saudi Riyal
Saudi Riyal to Colombian PesoColombian Peso to Saudi Riyal
Saudi Riyal to Costa Rican ColonCosta Rican Colon to Saudi Riyal
Saudi Riyal to Cuban Convertible PesoCuban Convertible Peso to Saudi Riyal
Saudi Riyal to Cuban PesoCuban Peso to Saudi Riyal
Saudi Riyal to Cape Verdean EscudoCape Verdean Escudo to Saudi Riyal
Saudi Riyal to Czech Republic KorunaCzech Republic Koruna to Saudi Riyal
Saudi Riyal to Djiboutian FrancDjiboutian Franc to Saudi Riyal
Saudi Riyal to Danish KroneDanish Krone to Saudi Riyal
Saudi Riyal to Dominican PesoDominican Peso to Saudi Riyal
Saudi Riyal to Algerian DinarAlgerian Dinar to Saudi Riyal
Saudi Riyal to Egyptian PoundEgyptian Pound to Saudi Riyal
Saudi Riyal to Eritrean NakfaEritrean Nakfa to Saudi Riyal
Saudi Riyal to Ethiopian BirrEthiopian Birr to Saudi Riyal
Saudi Riyal to EuroEuro to Saudi Riyal
Saudi Riyal to Fijian DollarFijian Dollar to Saudi Riyal
Saudi Riyal to Falkland Islands PoundFalkland Islands Pound to Saudi Riyal
Saudi Riyal to British Pound SterlingBritish Pound Sterling to Saudi Riyal
Saudi Riyal to Georgian LariGeorgian Lari to Saudi Riyal
Saudi Riyal to Guernsey PoundGuernsey Pound to Saudi Riyal
Saudi Riyal to Ghanaian CediGhanaian Cedi to Saudi Riyal
Saudi Riyal to Gibraltar PoundGibraltar Pound to Saudi Riyal
Saudi Riyal to Gambian DalasiGambian Dalasi to Saudi Riyal
Saudi Riyal to Guinean FrancGuinean Franc to Saudi Riyal
Saudi Riyal to Guatemalan QuetzalGuatemalan Quetzal to Saudi Riyal
Saudi Riyal to Guyanaese DollarGuyanaese Dollar to Saudi Riyal
Saudi Riyal to Hong Kong DollarHong Kong Dollar to Saudi Riyal
Saudi Riyal to Honduran LempiraHonduran Lempira to Saudi Riyal
Saudi Riyal to Haitian GourdeHaitian Gourde to Saudi Riyal
Saudi Riyal to Hungarian ForintHungarian Forint to Saudi Riyal
Saudi Riyal to Indonesian RupiahIndonesian Rupiah to Saudi Riyal
Saudi Riyal to Israeli New SheqelIsraeli New Sheqel to Saudi Riyal
Saudi Riyal to Manx PoundManx Pound to Saudi Riyal
Saudi Riyal to Indian RupeeIndian Rupee to Saudi Riyal
Saudi Riyal to Iraqi DinarIraqi Dinar to Saudi Riyal
Saudi Riyal to Iranian RialIranian Rial to Saudi Riyal
Saudi Riyal to Icelandic KronaIcelandic Krona to Saudi Riyal
Saudi Riyal to Jersey PoundJersey Pound to Saudi Riyal
Saudi Riyal to Jamaican DollarJamaican Dollar to Saudi Riyal
Saudi Riyal to Jordanian DinarJordanian Dinar to Saudi Riyal
Saudi Riyal to Japanese YenJapanese Yen to Saudi Riyal
Saudi Riyal to Kenyan ShillingKenyan Shilling to Saudi Riyal
Saudi Riyal to Kyrgystani SomKyrgystani Som to Saudi Riyal
Saudi Riyal to Cambodian RielCambodian Riel to Saudi Riyal
Saudi Riyal to Comorian FrancComorian Franc to Saudi Riyal
Saudi Riyal to North Korean WonNorth Korean Won to Saudi Riyal
Saudi Riyal to South Korean WonSouth Korean Won to Saudi Riyal
Saudi Riyal to Kuwaiti DinarKuwaiti Dinar to Saudi Riyal
Saudi Riyal to Cayman Islands DollarCayman Islands Dollar to Saudi Riyal
Saudi Riyal to Kazakhstani TengeKazakhstani Tenge to Saudi Riyal
Saudi Riyal to Laotian KipLaotian Kip to Saudi Riyal
Saudi Riyal to Lebanese PoundLebanese Pound to Saudi Riyal
Saudi Riyal to Sri Lankan RupeeSri Lankan Rupee to Saudi Riyal
Saudi Riyal to Liberian DollarLiberian Dollar to Saudi Riyal
Saudi Riyal to Lesotho LotiLesotho Loti to Saudi Riyal
Saudi Riyal to Libyan DinarLibyan Dinar to Saudi Riyal
Saudi Riyal to Moroccan DirhamMoroccan Dirham to Saudi Riyal
Saudi Riyal to Moldovan LeuMoldovan Leu to Saudi Riyal
Saudi Riyal to Malagasy AriaryMalagasy Ariary to Saudi Riyal
Saudi Riyal to Macedonian DenarMacedonian Denar to Saudi Riyal
Saudi Riyal to Myanma KyatMyanma Kyat to Saudi Riyal
Saudi Riyal to Mongolian TugrikMongolian Tugrik to Saudi Riyal
Saudi Riyal to Macanese PatacaMacanese Pataca to Saudi Riyal
Saudi Riyal to Mauritanian OuguiyaMauritanian Ouguiya to Saudi Riyal
Saudi Riyal to Mauritian RupeeMauritian Rupee to Saudi Riyal
Saudi Riyal to Maldivian RufiyaaMaldivian Rufiyaa to Saudi Riyal
Saudi Riyal to Malawian KwachaMalawian Kwacha to Saudi Riyal
Saudi Riyal to Mexican PesoMexican Peso to Saudi Riyal
Saudi Riyal to Malaysian RinggitMalaysian Ringgit to Saudi Riyal
Saudi Riyal to Mozambican MeticalMozambican Metical to Saudi Riyal
Saudi Riyal to Namibian DollarNamibian Dollar to Saudi Riyal
Saudi Riyal to Nigerian NairaNigerian Naira to Saudi Riyal
Saudi Riyal to Nicaraguan CordobaNicaraguan Cordoba to Saudi Riyal
Saudi Riyal to Norwegian KroneNorwegian Krone to Saudi Riyal
Saudi Riyal to Nepalese RupeeNepalese Rupee to Saudi Riyal
Saudi Riyal to New Zealand DollarNew Zealand Dollar to Saudi Riyal
Saudi Riyal to Omani RialOmani Rial to Saudi Riyal
Saudi Riyal to Panamanian BalboaPanamanian Balboa to Saudi Riyal
Saudi Riyal to Peruvian Nuevo SolPeruvian Nuevo Sol to Saudi Riyal
Saudi Riyal to Papua New Guinean KinaPapua New Guinean Kina to Saudi Riyal
Saudi Riyal to Philippine PesoPhilippine Peso to Saudi Riyal
Saudi Riyal to Pakistani RupeePakistani Rupee to Saudi Riyal
Saudi Riyal to Polish ZlotyPolish Zloty to Saudi Riyal
Saudi Riyal to Paraguayan GuaraniParaguayan Guarani to Saudi Riyal
Saudi Riyal to Qatari RialQatari Rial to Saudi Riyal
Saudi Riyal to Romanian LeuRomanian Leu to Saudi Riyal
Saudi Riyal to Serbian DinarSerbian Dinar to Saudi Riyal
Saudi Riyal to Russian RubleRussian Ruble to Saudi Riyal
Saudi Riyal to Rwandan FrancRwandan Franc to Saudi Riyal
Saudi Riyal to Solomon Islands DollarSolomon Islands Dollar to Saudi Riyal
Saudi Riyal to Seychellois RupeeSeychellois Rupee to Saudi Riyal
Saudi Riyal to Sudanese PoundSudanese Pound to Saudi Riyal
Saudi Riyal to Swedish KronaSwedish Krona to Saudi Riyal
Saudi Riyal to Singapore DollarSingapore Dollar to Saudi Riyal
Saudi Riyal to Saint Helena PoundSaint Helena Pound to Saudi Riyal
Saudi Riyal to Sierra Leonean LeoneSierra Leonean Leone to Saudi Riyal
Saudi Riyal to Somali ShillingSomali Shilling to Saudi Riyal
Saudi Riyal to Surinamese DollarSurinamese Dollar to Saudi Riyal
Saudi Riyal to South Sudanese PoundSouth Sudanese Pound to Saudi Riyal
Saudi Riyal to Sao Tome And Principe DobraSao Tome And Principe Dobra to Saudi Riyal
Saudi Riyal to Salvadoran ColonSalvadoran Colon to Saudi Riyal
Saudi Riyal to Syrian PoundSyrian Pound to Saudi Riyal
Saudi Riyal to Swazi LilangeniSwazi Lilangeni to Saudi Riyal
Saudi Riyal to Thai BahtThai Baht to Saudi Riyal
Saudi Riyal to Tajikistani SomoniTajikistani Somoni to Saudi Riyal
Saudi Riyal to Turkmenistani ManatTurkmenistani Manat to Saudi Riyal
Saudi Riyal to Tunisian DinarTunisian Dinar to Saudi Riyal
Saudi Riyal to Tongan PaangaTongan Paanga to Saudi Riyal
Saudi Riyal to Turkish LiraTurkish Lira to Saudi Riyal
Saudi Riyal to Trinidad And Tobago DollarTrinidad And Tobago Dollar to Saudi Riyal
Saudi Riyal to New Taiwan DollarNew Taiwan Dollar to Saudi Riyal
Saudi Riyal to Tanzanian ShillingTanzanian Shilling to Saudi Riyal
Saudi Riyal to Ukrainian HryvniaUkrainian Hryvnia to Saudi Riyal
Saudi Riyal to Ugandan ShillingUgandan Shilling to Saudi Riyal
Saudi Riyal to United States DollarUnited States Dollar to Saudi Riyal
Saudi Riyal to Uruguayan PesoUruguayan Peso to Saudi Riyal
Saudi Riyal to Uzbekistan SomUzbekistan Som to Saudi Riyal
Saudi Riyal to Venezuelan Bolivar SoberanoVenezuelan Bolivar Soberano to Saudi Riyal
Saudi Riyal to Vietnamese DongVietnamese Dong to Saudi Riyal
Saudi Riyal to Vanuatu VatuVanuatu Vatu to Saudi Riyal
Saudi Riyal to Samoan TalaSamoan Tala to Saudi Riyal
Saudi Riyal to Cfa Franc BeacCfa Franc Beac to Saudi Riyal
Saudi Riyal to Silver Troy OunceSilver Troy Ounce to Saudi Riyal
Saudi Riyal to Gold Troy OunceGold Troy Ounce to Saudi Riyal
Saudi Riyal to East Caribbean DollarEast Caribbean Dollar to Saudi Riyal
Saudi Riyal to Special Drawing RightsSpecial Drawing Rights to Saudi Riyal
Saudi Riyal to Cfa Franc BceaoCfa Franc Bceao to Saudi Riyal
Saudi Riyal to Palladium OuncePalladium Ounce to Saudi Riyal
Saudi Riyal to Cfp FrancCfp Franc to Saudi Riyal
Saudi Riyal to Platinum OuncePlatinum Ounce to Saudi Riyal
Saudi Riyal to Yemeni RialYemeni Rial to Saudi Riyal
Saudi Riyal to South African RandSouth African Rand to Saudi Riyal
Saudi Riyal to Zambian KwachaZambian Kwacha to Saudi Riyal

FAQ on Saudi Riyal (SAR) to Platinum Ounce (XPT) Conversion:

What is the Symbol of Saudi Riyal and Platinum Ounce?

The symbol for Saudi Riyal is '﷼', and for Platinum Ounces, it is 'XPT'. These symbols are used to denote in everyday currency analysis.

How to convert Saudi Riyal(s) to Platinum Ounce(es)?

To convert Saudi Riyal(s) to Platinum Ounce(es), multiply the number of Saudi Riyals by 7577.4 because one Saudi Riyal equals 7577.4 Platinum Ounces.
Formula: Platinum Ounces = Saudi Riyals × 7577.4.
This is a standard rule used in conversions.

How to convert Platinum Ounce(es) to Saudi Riyal(s) ?

To convert Platinum Ounce(es) to Saudi Riyal(s), divide the number of Platinum Ounces by 7577.4, since, 1 Saudi Riyal contains exactly 7577.4 Platinum Ounce(es).
Formula: Saudi Riyals = Platinum Ounce(s) ÷ 7577.4.
It’s a common calculation in conversions.

How many Saudi Riyal(s) are these in an Platinum Ounce(es) ?

There are 0.00013197138860295 Saudi Riyals in one Platinum Ounce. This is derived by dividing 1 Platinum Ounce by 7577.4, as 1 Saudi Riyal equals 7577.4 Platinum Ounce(s).
Formula: Saudi Riyal = Platinum Ounces ÷ 7577.4.
It’s a precise currency conversion method.

How many Platinum Ounce(es) are these in an Saudi Riyal(s) ?

There are exactly 7577.4 Platinum Ounces in one Saudi Riyal. This is a fixed value used in the measurement system.
Formula: Platinum Ounce(s) = Saudi Riyals × 7577.4.
It's one of the most basic conversions.

How many Platinum Ounce in 10 Saudi Riyal?

There are 75774 Platinum Ounces in 10 Saudi Riyals. This is calculated by multiplying 10 by 7577.4.
Formula: 10 Saudi Riyals × 7577.4 = 75774 Platinum Ounces.
This conversion is helpful for measurements.

How many Platinum Ounce(s) in 50 Saudi Riyal?

There are 378870 Platinum Ounces in 50 Saudi Riyals. One can calculate it by multiplying 50 by 7577.4.
Formula: 50 Saudi Riyals × 7577.4 = 378870 Platinum Ounces.
This conversion is used in many applications.

How many Platinum Ounce(s) in 100 Saudi Riyal?

There are 757740 Platinum Ounce(s) in 100 Saudi Riyals. Multiply 100 by 7577.4 to get the result.
Formula: 100 Saudi Riyals × 7577.4 = 757740 Platinum Ounce(s).
This is a basic currency conversion formula.