Million to Billion Converter (with Korean 만·억·조)

Understanding the million to billion converter — concept and principle

This converter changes numbers between millions, billions, thousands and trillions and the Korean units 만 (man, 10⁴), 억 (eok, 10⁸) and 조 (jo, 10¹²). It shows the result, the number in billions, millions, eok and man, the Korean reading and the full figure. It helps when reading English financial news in Korean, or Korean figures in English.

Western 3-digit vs Korean 4-digit groups — with the default inputs: 0.75 billion.

How it is calculated

1 billion = 1,000 million; millions ÷ 1,000 = billions
Korean units: 만 = 10⁴, 억 = 10⁸, 조 = 10¹²
1 million = 100만; 100 million = 1억; 1 billion = 10억; 1 trillion = 1조
Plain number = value × size of the "from" unit; result = plain number ÷ size of the "to" unit
Korean reading splits the number into 조, 억 and 만 groups

The principle

English counts large numbers in steps of 1,000 (thousand, million, billion), while Korean, like Chinese and Japanese, counts in steps of 10,000 (만, 억, 조). The two ladders meet only at certain points: 10¹² is both a trillion and 1조. Elsewhere, numbers must be regrouped, which is where most translation errors happen. Converting through the plain number avoids them.

Worked example

Default: 750 million to billions.

Plain number = 750 × 10⁶ = 750,000,000.
Result = 750,000,000 ÷ 10⁹ = 0.75 billion.
In millions 750; in billions 0.75.
In 억 = 750,000,000 ÷ 10⁸ = 7.5; in 만 = 75,000.
Korean reading: 7억 5,000만; full figure 750,000,000.

Each point is the calculator re-run with only “Number” changed; the gold point is the default example. Change the inputs above and this chart follows your numbers.

Number	Result
188	0.1875 billion
375	0.375 billion
562	0.5625 billion
750	0.75 billion
938	0.9375 billion
1,125	1.125 billion
1,500	1.5 billion

How to read the result

A quick rule: 1 billion = 10억, so multiply billions by 10 to get 억. For dollars, 0.75 billion dollars is 7억 5,000만 dollars, which in won depends on the exchange rate. Always convert the number first and the currency second.

Common mistakes

Translating "billion" as 억 instead of 10억.
Translating "million" as 만 instead of 100만.
Grouping Korean figures in threes, which hides the 만 and 억 boundaries.
Converting the currency and the number in one rough step.

Keep in mind: Large numbers are easy to mistype. Check the digit count against the source before quoting.

Frequently asked questions

How much is 1 billion in Korean?

10억.

How much is 100 million?

1억.

How many millions are in a billion?

1,000.

Why does Korean use 만 and 억?

Korean counts in groups of four digits, so each new unit is 10,000 times the previous one.

Sources: Merriam-Webster's Collegiate Dictionary, entries "billion" and "trillion"

Checked 9 Nov 2026. Number names from Merriam-Webster’s Collegiate Dictionary entries “lakh” (100,000), “crore” (10,000,000; 100 lakhs), “billion” (US: 1,000 millions) and “trillion” (1,000 billions); Korean units 만 = 10⁴, 억 = 10⁸, 조 = 10¹² (each 10,000 times the previous).

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