exapascal [EPa] Unit Converter

Definition of exapascal [EPa] unit

The exapascal (EPa) is a unit of pressure in the International System of Units (SI), equal to one quintillion pascals, or 1018 Pa. It represents force of one newton acting over an area of 10−18 square metres.

History of exapascal [EPa] unit

The exapascal derives its name from the pascal, the SI unit of pressure named in honour of French mathematician and physicist Blaise Pascal. The prefix “exa-” was introduced into the SI in 1975, joining an expanding prefix system for expressing exceptionally large quantities. Although the pascal became an SI derived unit in 1960, exapascal-scale measurements emerged mainly as scientific notation for extreme pressures. The unit is uncommon in practical engineering because such magnitudes greatly exceed ordinary terrestrial pressures by many orders of magnitude.

Applications of exapascal [EPa] unit

Exapascals are primarily used in theoretical physics, astrophysics, and high-pressure research to describe enormous pressures found inside stars, planets, or hypothetical dense matter. They may also appear in computational models, equations, and scientific literature when exponent-based values are convenient. In practice, researchers usually report such pressures in petapascals or terapascal-related notation instead.

Complete list of exapascal [EPa] unit conversion