Big Number Calculator
Tip: You can enter numbers in scientific notation (e.g. 6.02e23).A + B = Result → 5 + 10 = 15
A - B = Result → 10 - 5 = 5
A × B = Result → 5 × 10 = 50
A ÷ B = Result → 10 ÷ 2 = 5
A ^ B = Result → 2 ^ 3 = 8
A² = Result → 5² = 25
√A = Result → √25 = 5
A! = Result → 5! = 120
A mod B = Result → 10 mod 3 = 1
gcd(A, B) = Result → gcd(8, 12) = 4
lcm(A, B) = Result → lcm(4, 6) = 12
Most standard scientific or graphing calculators are designed to display results with up to 10 decimal places. While this level of precision is usually sufficient for everyday calculations, it may fall short in fields where ultra-high accuracy is essential. That’s where a Big Number Calculator becomes useful. Tools like the one above are built to handle extremely large numbers with exceptional accuracy, making them valuable in specialized areas such as mathematics, cryptography, astronomy, cosmology, and statistical mechanics.
In daily life, you may encounter big numbers more often than you think—such as the number of bits on a hard drive, the estimated number of cells and neural connections in the human body, Avogadro’s number, or even the estimated atoms in the observable universe. Large numbers also arise in combinatorics and probability calculations.
When numbers reach unimaginable sizes, conventional notation becomes inadequate. That’s why mathematicians developed special systems like Knuth’s up-arrow notation, Conway chained arrow notation, and Steinhaus-Moser notation to express incredibly large values. While most people may never need to calculate such large figures, using a big number calculator can be a fascinating way to explore mathematical concepts—like seeing the full result of 10,000 factorial displayed on a screen.
To help put large numbers into perspective, here’s a quick reference chart showing powers of 10 and their corresponding names:
| Powers of 10 | Name |
|---|---|
| 10⁹ | Billion |
| 10¹² | Trillion |
| 10¹⁵ | Quadrillion |
| 10¹⁸ | Quintillion |
| 10²¹ | Sextillion |
| 10²⁴ | Septillion |
| 10²⁷ | Octillion |
| 10³⁰ | Nonillion |
| 10³³ | Decillion |
| 10³⁶ | Undecillion |
| 10³⁹ | Duodecillion |
| 10⁴² | Tredecillion |
| 10⁴⁵ | Quattuordecillion |
| 10⁴⁸ | Quindecillion |
| 10⁵¹ | Sexdecillion |
| 10⁵⁴ | Septendecillion |
| 10⁵⁷ | Octodecillion |
| 10⁶⁰ | Novemdecillion |
| 10⁶³ | Vigintillion |
| 10¹⁰⁰ | Googol |
| 10³⁰³ | Centillion |
| 10^Googol | Googolplex |