Ancient History

Math and Arithmetic

Acronyms & Abbreviations

# How do you count BC years?

###### Wiki User

###### 2011-08-25 14:52:42

BC + AD - 1

You have to subtract 1 after adding the year BC to the AD year.

There is no year Zero, so the calendar is not a proper timeline.

This is not a matter of interpretation (like the new millennium

arguments).

If you were born in 1 B.C., then you were one year old in A.D.

1. That's 1 + 1 - 1.

If the start and end years are both BC, then it's a simple

subtraction of the smaller number from the larger number, just as

you would calculate your own age today.

Note that "BC" is properly written after the year, but "AD"

(Anno Domini) goes before the year. If you use the more inclusive

"Common Era" notation, then both "CE" and "BCE" go after the

year.

## Related Questions

###### Asked in Acronyms & Abbreviations, Calendar

### What is BC vs AD?

BC= stands for Befor Christ(count down)
AD= stands for nAnno Domini(in the year of the lord)
You know when years counted down right? Well that is BC. Then AD
is when the years count up. When the abbreviations are the same
then subtract(-) if they are different the add(+) 500 BC And 500 AD
its 1,000 years! Now do you get it? If you still dont get it....
ASK YOUR TEACHER!

###### Asked in Ancient History

### How long ago was 290 BC?

290 BC was 2300 years ago.
290 BC means 290 years before Jesus Crist was born which is the
starting point from wich we count our present years. So you add the
amount of years since Jesus Christ was born, currently 2010, and
add the amount of years BC and you get the total of years:
2010 + 290 = 2300
So 290 BC was 2300 years ago.

###### Asked in Dinosaurs

### Was 10000 bc after dinosaurs?

###### Asked in Ancient History, Bridges and Tunnels, Civil Rights Movement

### In 2457 BC work gangs began quarrying at Tura For the next 14 years they ferried stone across the flooded valley In what year was the process completed?

BC means Before Christ. Intead of counting up the years like you
do in AD (AD is what we count in now, e.g. 2001, 2002, 2003), you
count backwards till you get 0 BC, which is when Christ was born.
After 0 BC starts 1 AD then 2 AD etc. So basically, if you started
in 2457 BC, and finished 14 years later, you would finish in 2443
BC.

###### Asked in Math and Arithmetic

### How many years between 15 B.C. and 15 A.D.?

From 15 BC to 0, there is a timespan of 15 years.
From 0 to AD 15, there is a timespan of 15 years.
15 + 15 = 30. So, 30 years.
=========================================
From the end of 15 BC to the end of 15 AD = 30 years
From the end of 15 BC to the beginning of 15 AD = 29 years
From the beginning of 15 BC to the end of 15 AD = 31 years
From the beginning of 15 BC to the beginning of 15 AD = 30
years
29: There was no year zero. AD1 follows BC1. Measure from same
day in each year: From BC 15 to BC 1 there are 14 years (15 to 14
is 1 year etc) From BC 1 to AD 1 there is 1 year. From AD 1 to AD
15 there are 14 years. Total 29 years. Or, using the rule: Sobtract
the two years from each other (count BC as negative) and then
subtract another 1 if going from BC to AD and you get 15 - (-15) -1
= 29.

###### Asked in Cleopatra

### What year did Cleopatra turn 18 years old in?

Cleopatra would have turned 18 in the years 51 BC.
Cleopatra would have turned 18 in the years 51 BC.
Cleopatra would have turned 18 in the years 51 BC.
Cleopatra would have turned 18 in the years 51 BC.
Cleopatra would have turned 18 in the years 51 BC.
Cleopatra would have turned 18 in the years 51 BC.
Cleopatra would have turned 18 in the years 51 BC.
Cleopatra would have turned 18 in the years 51 BC.
Cleopatra would have turned 18 in the years 51 BC.

###### Asked in Calendar, Mathematical Analysis

### How many years are there between 30 BC and 30 AD and why?

58 years are between 30 BC and AD 30.
The first thing you need to remember is that there is no year 0;
the year before AD 1 is 1 BC. So the years between 30 BC and AD 30
are...
29 BC, 28 BC, 27 BC, ..., 2 BC, 1 BC, AD1, AD 2, ..., AD 27, AD
28, AD 29
29 BC through 1 BC is 29 years, and AD 1 through AD 29 is 29
years.
29 years + 29 years = 58 years

###### Asked in Ancient Wars, Roman Empire, Julius Caesar

### Who was Julius Caesar's greatest rival in 31 BC?

Julius Caesar had no rivals in 31 BC. He had been dead for
thirteen years as he was killed in 44 BC.
Julius Caesar had no rivals in 31 BC. He had been dead for thirteen
years as he was killed in 44 BC.
Julius Caesar had no rivals in 31 BC. He had been dead for thirteen
years as he was killed in 44 BC.
Julius Caesar had no rivals in 31 BC. He had been dead for thirteen
years as he was killed in 44 BC.
Julius Caesar had no rivals in 31 BC. He had been dead for thirteen
years as he was killed in 44 BC.
Julius Caesar had no rivals in 31 BC. He had been dead for thirteen
years as he was killed in 44 BC.
Julius Caesar had no rivals in 31 BC. He had been dead for thirteen
years as he was killed in 44 BC.
Julius Caesar had no rivals in 31 BC. He had been dead for thirteen
years as he was killed in 44 BC.
Julius Caesar had no rivals in 31 BC. He had been dead for thirteen
years as he was killed in 44 BC.

###### Asked in Roman Empire

### How long did Augustus Caesar's mother live?

Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.
Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.
Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.
Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.
Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.
Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.
Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.
Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.
Augustus Caesar's mother lived from 85 BC to 43 BC. She was 42
years old at her death.