When was bc changed to bce

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Last updated: April 17, 2026

Quick Answer: The transition from BC (Before Christ) to BCE (Before Common Era) began in the 17th century but gained widespread academic use in the late 20th century, particularly from the 1990s onward as a secular alternative.

Key Facts

The term BCE was first used in the 1600s by German scholars.
BCE/CE became common in academic texts starting in the 1990s.
The switch aimed to provide religiously neutral terminology.
BC/AD dates remain numerically identical to BCE/CE.
Major style guides like the AP Stylebook recommend BCE/CE in journalism.

Overview

The shift from BC (Before Christ) to BCE (Before Common Era) reflects a broader movement toward inclusive, secular language in historical and academic contexts. While the dating system itself remains unchanged, the terminology evolved to avoid Christian-centric references.

This change did not alter timelines—1 BC is the same as 1 BCE—but introduced a more neutral framework for global scholarship. The updated terms are now standard in many textbooks, journals, and educational systems worldwide.

First recorded use of BCE dates back to the 17th century by German Protestant scholars seeking religious neutrality in historical texts.
The 1990s marked a turning point when major academic publishers and educational institutions began adopting BCE/CE in place of BC/AD.
The switch does not affect the calendar structure—dates align exactly between BC and BCE, AD and CE.
Religious neutrality is the primary driver, allowing Jewish, Muslim, Hindu, and non-religious scholars to engage with historical timelines without endorsing Christian doctrine.
Major institutions like the Smithsonian and the BBC adopted BCE/CE in the early 2000s to reflect inclusive language standards.

How It Works

BCE and CE function identically to BC and AD in terms of dating but differ in naming convention. Below is a breakdown of each term and its usage in historical and academic contexts.

Term:BC (Before Christ) refers to years before the estimated birth of Jesus Christ; this label has been used since the 6th century by Dionysius Exiguus.
Term:AD (Anno Domini) means 'in the year of the Lord' in Latin and counts years from the traditional birth year of Jesus Christ.
Term:BCE (Before Common Era) is the secular equivalent of BC, used in academic and interfaith contexts to maintain neutrality.
Term:CE (Common Era) replaces AD and refers to the same timeline, starting from the same epoch year without religious language.
Term:Year numbering remains identical: 500 BC equals 500 BCE, and AD 2024 equals CE 2024, preserving chronological consistency.
Term:Global adoption varies—BCE/CE is standard in U.S. public schools and international journals, while BC/AD remains common in religious and some European contexts.

Comparison at a Glance

The following table compares BC/AD and BCE/CE systems, showing equivalent terms and usage contexts.

Traditional Term	Modern Equivalent	Meaning	First Used	Primary Context
BC	BCE	Before Christ / Before Common Era	6th century / 17th century	Historical timelines
AD	CE	Anno Domini / Common Era	6th century / 17th century	Modern scholarship
Christian origin	Secular alternative	Reflects religious vs. inclusive language	525 AD / 1615 CE	Educational materials
Widely used until 1990s	Preferred in academia post-2000	Shift due to inclusivity standards	Pre-1990	Textbooks, journals
Used in religious contexts	Standard in public schools	Different audience alignment	6th century	Global education

While both systems represent the same chronological timeline, the choice of terminology often depends on the audience and context. Secular institutions favor BCE/CE to promote inclusivity, while religious communities may retain BC/AD for doctrinal consistency.

Why It Matters

The adoption of BCE/CE reflects broader cultural shifts toward secularism and global inclusivity in education and scholarship. It allows historians and educators to present timelines without privileging one religious tradition.

Academic standards in anthropology, history, and archaeology increasingly require neutral terminology to support objective research.
Textbook publishers like Pearson and McGraw-Hill adopted BCE/CE in the early 2000s to meet educational guidelines.
Religious diversity in classrooms makes BCE/CE more accessible to students of all or no faiths.
International journals such as Nature and Science use BCE/CE to maintain global consistency.
Cultural sensitivity is enhanced by avoiding terms that assume Christian beliefs in public curricula.
Continuity of dates ensures no disruption in historical analysis, making the transition seamless for researchers.

Ultimately, the change from BC to BCE is not about rewriting history, but about presenting it in a way that respects diverse worldviews while maintaining chronological accuracy.