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Free big number calculator for unlimited precision arithmetic. Calculate with numbers beyond standard limits - addition, subtraction, multiplication, division with step-by-step solutions.
A big number calculator is a specialized mathematical tool that performs arithmetic operations on extremely large numbers that exceed the limits of standard calculators. While regular calculators can handle numbers up to 15-17 digits, our big number calculator works with integers of unlimited size using arbitrary precision arithmetic.
Add two large numbers with unlimited digits
Subtract large numbers with precision
Multiply huge numbers accurately
Divide with quotient and remainder
Compare which number is larger
RSA encryption uses prime numbers with hundreds of digits. Bitcoin addresses and blockchain transactions require precise large number calculations.
Astronomical distances (light-years), particle physics calculations, and quantum mechanics often involve numbers beyond standard precision.
National debts, global GDP, and international trade calculations involve trillions and require exact precision.
Number theory, prime number research, factorial calculations (1000! has 2,568 digits), and combinatorics.
Comprehensive guide to arbitrary precision arithmetic and big number calculations.
Read More →Official documentation for JavaScript's BigInt primitive used in this calculator.
Read More →Mathematical reference for understanding large numbers and their properties.
Read More →Most calculators only show results. We show you how we got there.
Easily compare which large number is bigger - unique to our calculator.
Shows both quotient and remainder for complete results.
Pre-loaded examples to test and learn instantly.
They show results without explaining the process.
Many only support basic addition/subtraction.
Not optimized for smartphones and tablets.
Many require payment or show intrusive ads.