Scientific Notation Calculator

Scientific Notation Calculator is a clean, fast tool for working with very large and very small numbers — completely offline. Convert any value to scientific, E-notation and engineering form, then add, subtract, multiply or divide two numbers written in scientific notation, all with the precision you choose. WHAT YOU CAN DO • Convert a plain number to scientific notation (1.2345 × 10^4) • See it as E-notation (1.2345E4) and engineering notation (12.345 × 10^3) • Read it back as a plain decimal • Calculate (+, −, ×, ÷) on two scientific-notation numbers • Set the significant figures with a simple stepper • Copy any result to the clipboard in one tap ACCURATE BY DESIGN The maths runs on high-precision decimals, so huge exponents and tiny fractions keep their digits. Negative numbers, zero and extreme magnitudes are all handled gracefully, and invalid input is flagged instead of guessed. WORKED EXAMPLES • 12345 becomes 1.2345 × 10^4 • 0.00056 becomes 5.6 × 10^-4 • (3 × 10^4) × (2 × 10^-2) = 6 × 10^2 LEARN AS YOU GO A built-in Learn tab explains, in plain language, what scientific and engineering notation are, what significant figures mean, and why scientists and engineers rely on them every day. EDUCATIONAL USE Results are rounded to the significant figures you select, so always double-check critical or professional work. This app is a learning and reference tool, not a substitute for professional judgement. PRIVACY The app collects no personal data and works fully offline — your numbers never leave your device. Ads are served by Google AdMob, which may use an advertising identifier as described in Google's policies. Light and dark themes, a tiny download, and no clutter. Download Scientific Notation Calculator and work with confidence.