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Free online scientific notation calculator to convert numbers to and from scientific notation. Easy E-notation converter with step-by-step explanations and instant results.
Last updated: February 13, 2026
Leave empty for full precision, or specify number of significant figures
Scientific notation is a standardized method of expressing very large or very small numbers in a compact, easy-to-read format. It consists of two main components: a coefficient (mantissa) and an exponent.
The general form is: a × 10^n, where:
Converting a number to scientific notation follows these simple steps:
Example 1: Large Number
45,000
→ Move decimal 4 places left: 4.5
→ Exponent: +4
→ Result: 4.5 × 10^4 or 4.5e+4
Example 2: Small Number
0.0067
→ Move decimal 3 places right: 6.7
→ Exponent: -3
→ Result: 6.7 × 10^-3 or 6.7e-3
Example 3: Very Large Number
892,000,000
→ Move decimal 8 places left: 8.92
→ Exponent: +8
→ Result: 8.92 × 10^8 or 8.92e+8
E-notation (exponential notation) is a computer-friendly way to represent scientific notation. Instead of writing "× 10^", it uses the letter "e" or "E" followed by the exponent.
Important Note:
The "e" in E-notation stands for "exponent" (power of 10), NOT Euler's number (2.718...). Both scientific notation and E-notation represent the same value, just in different formats.
Rule: (a × 10^m) × (b × 10^n) = (a × b) × 10^(m+n)
Example: (3 × 10^4) × (2 × 10^3)
= (3 × 2) × 10^(4+3)
= 6 × 10^7
Rule: (a × 10^m) ÷ (b × 10^n) = (a ÷ b) × 10^(m-n)
Example: (6 × 10^8) ÷ (2 × 10^3)
= (6 ÷ 2) × 10^(8-3)
= 3 × 10^5
Rule: Exponents must be the same before adding/subtracting coefficients
Example: (4 × 10^6) + (3 × 10^5)
Convert: 3 × 10^5 = 0.3 × 10^6
= (4 + 0.3) × 10^6
= 4.3 × 10^6
Convert TO and FROM scientific notation in one tool. Most calculators only do one direction.
Specify exact number of significant figures for precise scientific calculations.
See exactly how the conversion works with detailed steps - perfect for learning.
Full support for E-notation format (1.23e+5) used in calculators and programming.
Works perfectly on mobile, tablet, and desktop - calculate anywhere, anytime.
One-click examples for common scenarios - learn by exploring real examples.