๐Scientific Notation Calculator
Convert between decimal and scientific notation, or add, subtract, multiply, and divide values in scientific notation.
Free Scientific Notation Calculator
Working with very large or very small numbers? Our free scientific notation calculator converts between standard decimal form and scientific notation instantly, and can also add, subtract, multiply, or divide numbers already written in scientific notation.
Enter a number in either format and get the other back immediately, with the exponent shift shown step by step. Switch to arithmetic mode to combine two scientific-notation values directly โ multiplying coefficients and adding exponents, or aligning exponents before adding โ with every result automatically normalized so the coefficient falls between 1 and 10.
It handles extremely large and extremely small numbers accurately, avoiding the floating-point display glitches you'd get from a plain calculator, and flags malformed input โ like a missing exponent โ clearly rather than failing silently. No sign-up, no downloads, no limits.