Lakh, Crore, Million, Billion & Trillion Explained: Scale Comparison & Zeros Chart
In global finance, cross-border commerce, and daily news, few things cause more initial hesitation than switching between the South Asian numerical scale (Lakh and Crore) and the International numerical scale (Million, Billion, and Trillion).
If you read that a company raised “10 Million Dollars,” how many Crores is that? If a government budget allocates “50,000 Crore Rupees,” how many Billions does that represent?
Understanding how these scales correspond—and how many zeros each denomination carries—eliminates costly miscalculations. For automated conversions between these numbering conventions, use our dedicated Number to Words Lakh Converter, Number to Words Rupees Converter, or Number to Words USD Converter.
The Master Scale & Zeros Comparison Table
The fundamental divergence between the two systems is their grouping pattern:
- International System: Multiples of 1,000 (groups of 3 digits; adds 3 zeros per tier).
- Indian / South Asian System: Multiples of 100 after the first thousand (groups of 2 digits; adds 2 zeros per tier).
| Denomination | Number of Zeros | Scientific Notation | Indian Formatted Digits | International Formatted Digits | Equivalent in Other Scale |
|---|---|---|---|---|---|
| One Thousand | 3 zeros | 10^3 | 1,000 | 1,000 | Same in both |
| Ten Thousand | 4 zeros | 10^4 | 10,000 | 10,000 | Same in both |
| One Lakh | 5 zeros | 10^5 | 1,00,000 | 100,000 | 100 Thousand / 0.1 Million |
| Ten Lakh | 6 zeros | 10^6 | 10,00,000 | 1,000,000 | 1 Million |
| One Crore | 7 zeros | 10^7 | 1,00,00,000 | 10,000,000 | 10 Million |
| Ten Crore | 8 zeros | 10^8 | 10,00,00,000 | 100,000,000 | 100 Million |
| One Hundred Crore | 9 zeros | 10^9 | 100,00,00,000 | 1,000,000,000 | 1 Billion |
| One Arab (100 Crore) | 9 zeros | 10^9 | 1,00,00,00,000 | 1,000,000,000 | 1 Billion |
| One Kharab (100 Arab) | 11 zeros | 10^11 | 1,00,00,00,00,000 | 100,000,000,000 | 100 Billion |
| One Neel (100 Kharab) | 13 zeros | 10^13 | 1,00,00,00,00,00,000 | 10,000,000,000,000 | 10 Trillion |
| One Trillion | 12 zeros | 10^12 | 10,00,00,00,00,000 | 1,000,000,000,000 | 1 Lakh Crore / 10 Kharab |
Quick Mental Conversion Rules
Memorizing these four straightforward conversion benchmarks will let you convert values instantly in your head:
1. Lakh to Million: Divide by 10
- Formula: $Millions = (Lakhs / 10)$
- Example: 50 Lakh = 5 Million ($50 \div 10$)
- Example: 120 Lakh = 12 Million ($120 \div 10$)
2. Million to Lakh: Multiply by 10
- Formula: $Lakhs = Millions × 10$
- Example: 2.5 Million = 25 Lakh (2.5 × 10)
- Example: 10 Million = 100 Lakh (1 Crore)
3. Crore to Million: Multiply by 10
- Formula: $Millions = Crores × 10$
- Example: 5 Crore = 50 Million (5 × 10)
- Example: 75 Crore = 750 Million (75 × 10)
4. Crore to Billion: Divide by 100
- Formula: $Billions = (Crores / 100)$
- Example: 500 Crore = 5 Billion ($500 \div 100$)
- Example: 25,000 Crore = 250 Billion ($25,000 \div 100$)
Real-World Case Studies
Case Study 1: Startup Funding Rounds
- Headline: “Startup raises $12 Million Series A.”
- In Indian / Pakistani Context:
$12 Million × 10 = 120 Lakh = 1.2 Crore Dollars
If converted to Indian Rupees at an exchange rate of ₹85 per USD:
$12,000,000 × 85 = ₹1,020,000,000 = ₹102 Crore
Case Study 2: National GDP & Federal Budgets
- Headline: “India reaches a $4 Trillion GDP milestone.”
- Converting Trillion to Crore:
- 1 Trillion = 1,000 Billion
- 1 Billion = 100 Crore
- Therefore, 1 Trillion = 100,000 Crore (1 Lakh Crore)
- $4 Trillion = 4 Lakh Crore Dollars (400,000 Crore USD).
Case Study 3: Real Estate Valuation
- A luxury property in Dubai or London is marketed at AED 15 Million or £3 Million.
- An Indian or Pakistani buyer calculates:
- AED 15 Million = 150 Lakh AED (1.5 Crore AED).
- You can verify international currency formatting with our Number to Words AED Converter or Number to Words PKR Converter.
The Comma Placement Difference
Comma placement visually signals which numerical scale is in use:
The 3:3:3 International Grouping
Commas appear every 3 digits moving from right to left, matching Thousands, Millions, Billions, and Trillions:
1,234,567,890
890= Units triad567= Thousands triad234= Millions triad1= Billions single
The 3:2:2 South Asian Grouping
The first comma appears after the rightmost 3 digits (hundreds), but every subsequent comma appears after every 2 digits (Thousands, Lakhs, Crores):
1,23,45,67,890
890= Hundreds / Units67= Thousands45= Lakhs23= Crores1= Arabs
Frequently Asked Questions (FAQ)
How many zeros are in one Crore?
There are 7 zeros in one Crore ($10,000,000$ or $1,00,00,000$). In scientific notation, it is written as 1 × 10^7.
Is 1 Billion equal to 100 Crore or 1,000 Crore?
1 Billion is equal to 100 Crore. In digits, 1 Billion has 9 zeros ($1,000,000,000$), which in the Indian system is written as $1,00,00,00,000$ (One Arab, or One Hundred Crore).
What is one Trillion in Crores?
One Trillion (10^12) is equal to 100,000 Crores (one lakh crore). In the historical Indian system, 10^12 is also known as 10 Kharab.
Why do India, Pakistan, Bangladesh, and Nepal use Lakh and Crore?
The terms originate from classical Sanskrit literature (lakṣa meaning mark or stake of 100,000, and kroṭi meaning highest point or 10,000,000). The 2-digit grouping system has been utilized across the Indian subcontinent for over two millennia and remains standard in law, government, and banking across India, Pakistan, Bangladesh, and Nepal.
How do I write 1.5 million in lakhs?
$1.5 Million = 15 Lakhs$ ($15,00,000$).