I notice a lot of people end up at my site via searches related to ayatul kursi and I don't know if they are finding what they want. So here is a post specifically dedicated to ayatul kursi.
Ayatul Kursi is recommended for memorization, regular recitation, etc. Many people carry it on their person so it is handy to recite if they don't memorize it, and many people keep it in their cars, etc. It is said that reciting and reflecting on its meaning is a powerful avenue of protection, fulfillment of needs/goals, etc.
This is the transliteration/translation for Sura Al-Baqara 255-257. (I think Sunnis do only 255 as ayatul kursi, Shias do all three ayahs.)
Allāhu Lā 'Ilāha 'Illā Huwa Al-Ĥayyu Al-Qayyūm Lā Ta'khudhuhu Sinatun Wa Lā Nawmun Lahu Mā Fī As-Samāwāti Wa Mā Fī Al-'Arđi Man Dhā Al-Ladhī Yashfa`u `Indahu 'Illā Bi'idhnihi Ya`lamu Mā Bayna 'Aydīhim Wa Mā Khalfahum Wa Lā Yuĥīţūna Bishay'in Min `Ilmihi 'Illā Bimā Shā'a Wasi`a Kursīyuhu As-Samāwāti Wa Al-'Arđa Wa Lā Ya'ūduhu Ĥifžuhumā Wa Huwa Al-`Alīyu Al-`Ažīmu (255).
Allah! There is no God save Him, the Alive, the Eternal. Neither slumber nor sleep overtaketh Him. Unto Him belongeth whatsoever is in the heavens and whatsoever is in the earth. Who is he that intercedeth with Him save by His leave ? He knoweth that which is in front of them and that which is behind them, while they encompass nothing of His knowledge save what He will. His throne includeth the heavens and the earth, and He is never weary of preserving them. He is the Sublime, the Tremendous.
Lā 'Ikrāha Fī Ad-Dīni Qad Tabayyana Ar-Rushdu Mina Al-Ghayyi Faman Yakfur Biţ-Ţāghūti Wa Yu'umin Billāhi Faqad Astamsaka Bil-`Urwati Al-Wuthqaá Lā Anfişāma Lahā Wa Allāhu Samī`un `Alīmun (256).
There is no compulsion in religion. The right direction is henceforth distinct from error. And he who rejecteth false deities and believeth in Allah hath grasped a firm handhold which will never break. Allah is Hearer, Knower.
Allāhu Wa Līyu Al-Ladhīna 'Āmanū Yukhrijuhum Mina Až-Žulumāti 'Ilaá An-Nūr Wa Al-Ladhīna Kafarū 'Awliyā'uuhum Aţ-Ţāghūtu Yukhrijūnahum Mina An-Nūr 'Ilaá Až-Žulumāti 'Ūlā'ika 'Aşĥābu An-Nāri Hum Fīhā Khālidūna (257).
Allah is the Protecting Guardian of those who believe. He bringeth them out of darkness into light. As for those who disbelieve, their patrons are false deities. They bring them out of light into darkness. Such are rightful owners of the Fire. They will abide therein.