How Many Zeros in a Lakh?
A lakh has 5 zeros: 1,00,000 — equal to one hundred thousand (100,000) in the international system, or 105 in scientific notation. The lakh is a fundamental unit in the Indian numbering system, used daily across India, Pakistan, Bangladesh, Nepal, and Sri Lanka for quantities, prices, and population figures. One hundred lakhs make one crore. The word traces back to the Sanskrit "laksha," originally meaning one hundred thousand. Learn more about how many zeros does a crore have.
A lakh has
5
zeros
- Written Form
- 1,00,000
- Scientific
- 10⁵
- Western
- 100,000
How Is a Lakh Written?
In the Indian numbering system, one lakh is written as 1,00,000 — with the first comma placed after the first digit (from the right: thousands place) and subsequent commas every two digits. This 2-2-3 grouping pattern differs from the standard international 3-digit grouping (100,000). Both represent the same number; only the comma placement changes. Learn more about zeros in an ank.
Spelled out, one lakh is written as "one lakh" in Indian English, or "one hundred thousand" in international English. In Indian financial documents and news, ₹1,00,000 is a common way to express one lakh rupees.
| Indian notation | International notation | Zeros | Value |
|---|---|---|---|
| 1,00,000 | 100,000 | 5 | 1 lakh |
| 10,00,000 | 1,000,000 | 6 | 10 lakh = 1 million |
| 1,00,00,000 | 10,000,000 | 7 | 100 lakh = 1 crore |
How Many Zeros Are in 5 Lakh, 10 Lakh, and Other Multiples?
One lakh has 5 zeros (1,00,000). Multiples change the trailing zero count based on the multiplier:
- 5 lakh = 5,00,000 — five zeros follow the leading 5
- 10 lakh = 10,00,000 — six zeros after the leading 1, equal to 1 million
- 25 lakh = 25,00,000 — five trailing zeros
- 50 lakh = 50,00,000 — five trailing zeros
The key milestone is 10 lakh, which equals exactly one million (106, 6 zeros). This is a frequently used reference point when converting between Indian and international number systems.
How Does a Lakh Compare to the US Numbering System?
The US (and broader international) system has no direct equivalent for a lakh — it simply uses "one hundred thousand" (100,000). The lakh exists because the Indian numbering system groups digits differently: after thousands, it groups in twos rather than threes. This means Indian numbers jump from thousands (1,000) directly to lakhs (1,00,000) and then crores (1,00,00,000), skipping the intermediate "hundred thousand" and "ten million" labels used in English.
The comparison table below shows where lakh sits relative to familiar international units:
| Indian term | International equivalent | Zeros |
|---|---|---|
| 1 thousand | 1 thousand | 3 |
| 1 lakh | 100 thousand | 5 |
| 10 lakh | 1 million | 6 |
| 1 crore | 10 million | 7 |
| 100 crore | 1 billion | 9 |