Reading Large Numbers by Country

Q: What does 1万 mean in Japanese or Chinese?

1万 (read 'ichi-man' in Japanese or 'yī wàn' in Chinese) = 10,000. Japan and China count large numbers in units of 万 (10,000) and 億 (100,000,000). So 1 million in Japanese = 100万 (hyaku-man). 1 billion = 10億 (juu-oku). There is no direct Japanese word for 'million.'

Q: Is a billion the same in all countries?

Not historically. The US 'short scale' billion = 10^9 (one thousand million). The European 'long scale' billion = 10^12 (one million million — what Americans call a trillion). Today, the UK officially uses the short scale (since 1974). Germany, France, and most of Europe also officially use the short scale now, but the long scale survives in some everyday speech. Always verify the context when billion appears in an older European document.

Million, billion, lakh, crore, 万, 億 — the same amount written completely differently depending on which country you are in.

QUICK ANSWER

One billion dollars = $1,000,000,000 (US) = ₹1,00,00,00,000 (10 Arab in India) = ¥10億 (Japan) = ¥10亿 (China). India counts in lakhs (100,000) and crores (10,000,000). Japan and China count in 万 (10,000) and 億 (100,000,000). There is no single Japanese word for "million."

Step-by-Step

Identify the country's numbering system

Determine whether the number uses the Western system (thousands, millions, billions), the Indian system (lakh, crore), or the East Asian system (万, 億).

Find the value in the conversion table

Match the amount to its name in each system. For example, 1,000,000 = one million = 10 lakh = 100万.

Convert using the unit factors

Apply the unit values: 1 lakh = 100,000; 1 crore = 10,000,000; 1万 = 10,000; 1億 = 100,000,000. So 5 crore = 50 million = 5,000万.

Re-group the digits for that system

Rewrite with the correct grouping. India uses 2-2-3 grouping (12,34,56,789) while the West groups in threes (123,456,789).

Number Conversion Table

Number	🇺🇸 US English	🇮🇳 India	🇨🇳🇯🇵 China/Japan
10,000	Ten thousand	10 hazar	1万 (ichi-man / yī wàn)
100,000	One hundred thousand	1 lakh (1,00,000)	10万
1,000,000	One million	10 lakh (10,00,000)	100万 (hyaku-man)
10,000,000	Ten million	1 crore (1,00,00,000)	1,000万 / 千万
100,000,000	One hundred million	10 crore (10,00,00,000)	1億 (ichi-oku / yī yì)
1,000,000,000	One billion	100 crore / 1 Arab	10億 (juu-oku)
10,000,000,000	Ten billion	1,000 crore	100億
100,000,000,000	One hundred billion	10,000 crore	1,000億
1,000,000,000,000	One trillion	1 lakh crore	1兆 (ichi-chō)

India: Lakh and Crore

India uses the South Asian numbering system where the grouping is different from the Western system. After the first three digits (thousands), digits are grouped in twos.

1 lakh (1,00,000) = 100,000 (one hundred thousand)
10 lakh (10,00,000) = 1,000,000 (one million)
1 crore (1,00,00,000) = 10,000,000 (ten million)
100 crore = 1 Arab = 1 billion

The number 123,456,789 (US) is written 12,34,56,789 in India — read as "twelve crore thirty-four lakh fifty-six thousand seven hundred and eighty-nine."

Japan and China: 万 (10,000) and 億 (100,000,000)

East Asian languages group numbers in units of 万 (ten thousand) — not thousands. There is no single word for "million" in Japanese or Mandarin Chinese. Instead:

1万 = 10,000. The basic counting unit above thousands.
100万 (hyaku-man / bǎi wàn) = 1,000,000 (one million). Literally "one hundred ten-thousands."
1億 (ichi-oku / yī yì) = 100,000,000 (one hundred million).
10億 (juu-oku) = 1,000,000,000 (one billion).
1兆 (ichi-chō) = 1,000,000,000,000 (one trillion).

Japan's GDP is measured in 兆円 (chō-en) — trillion yen. A "billion yen" in Japan is 10億円, not a single named unit.

The Billion Confusion: Short Scale vs Long Scale

Historically, "billion" meant different things in different countries:

Scale	Billion =	Trillion =	Countries
Short scale	10⁹ (1,000 million)	10¹² (1,000 billion)	USA, UK (since 1974), most of world today
Long scale	10¹² (1 million million)	10¹⁸	Some older European documents; Brazil in Portuguese

Today, short scale is the global standard for scientific, financial, and official government use.

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Frequently Asked Questions

What is a lakh and a crore? ▾

A lakh = 100,000 (one hundred thousand). A crore = 10,000,000 (ten million) = 100 lakh. Used in India, Pakistan, Bangladesh, Nepal, and Sri Lanka. So "5 crore rupees" = ₹50,000,000 (50 million rupees). "2 lakh" = 200,000.

What does 1万 mean in Japanese or Chinese? ▾

1万 (read "ichi-man" in Japanese or "yī wàn" in Chinese) = 10,000. Japan and China count large numbers in units of 万 (10,000) and 億 (100,000,000). So 1 million in Japanese = 100万 (hyaku-man). 1 billion = 10億 (juu-oku). There is no direct Japanese word for "million."

Is a billion the same in all countries? ▾

Not historically. The US "short scale" billion = 10^9 (one thousand million). The European "long scale" billion = 10^12 (one million million — what Americans call a trillion). Today, the UK officially uses the short scale (since 1974). Germany, France, and most of Europe also officially use the short scale now, but the long scale survives in some everyday speech. Always verify the context when billion appears in an older European document.

How does India write large numbers differently? ▾

India uses a 2-2-3 grouping: the rightmost 3 digits are grouped first, then groups of 2. So 10 million is written 1,00,00,000 in India (one crore). The number 123,456,789 (US) is written 12,34,56,789 in India — read as "twelve crore thirty-four lakh fifty-six thousand seven hundred eighty-nine."

How do you convert crore to million? ▾

1 crore = 10 million. So to convert crores to millions, multiply by 10. Example: 5 crore = 50 million. To convert millions to crore, divide by 10. Example: 200 million = 20 crore.