Therefore the thirty kalpas of Brahmā are: (1) Śveta-kalpa, (2) Nīlalohita, (3) Vāmadeva, (4) Gāthāntara, (5) Raurava, (6) Prāṇa, (7) Bṛhat-kalpa, (8) Kandarpa, (9) Sadyotha, (10) Īśāna, (11) Dhyāna, (12) Sārasvata, (13) Udāna, (14) Garuḍa, (15) Kaurma, (16) Nārasiṁha, (17) Samādhi, (18) Āgneya, (19) Viṣṇuja, (20) Saura, (21) Soma-kalpa, (22) Bhāvana, (23) Supuma, (24) Vaikuṇṭha, (25) Arciṣa, (26) Valī-kalpa, (27) Vairāja, (28) Gaurī-kalpa, (29) Māheśvara, (30) Paitṛ-kalpa.
These are Brahmā's days only, and he has to live months and years up to one hundred, so we can just imagine how many creations there are in kalpas only. Then again there are vikalpas, which are generated by the breathing of Mahā-Viṣṇu, as stated in the Brahma-saṁhitā (yasyaika-niśvasita-kālam athāvalambya jīvanti loma-vilajā jagadaṇḍa-nāthāḥ (BS 5.48)). The Brahmās live only during the breathing period of Mahā-Viṣṇu. So the exhaling and inhaling of Viṣṇu are mahā-kalpas, and all these are due to the Supreme Personality of Godhead, for no one else is the master of all creations.