Scientific notation calculator
Write a number as a coefficient multiplied by a power of ten.
How to use this page
- Enter values or use the example in the form.
- Choose a mode or units where available.
- Read the result and check the calculation steps below.
What this page does not do: You choose output precision, not measurement accuracy. Calculations use floating-point arithmetic; boundary values may require checking.
Further reading
12345 = 1.2345 × 10⁴. For 0.0012 the result is 1.2 × 10⁻³. A non-zero coefficient has magnitude from 1 to below 10. Significant figures control rounding.
Frequently asked questions
How is the result calculated?
12345 = 1.2345 × 10⁴. For 0.0012 the result is 1.2 × 10⁻³. A non-zero coefficient has magnitude from 1 to below 10. Significant figures control rounding.
What are the limitations?
You choose output precision, not measurement accuracy. Calculations use floating-point arithmetic; boundary values may require checking.
See also
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Decimal to fraction calculator
Convert a terminating decimal into an exact reduced fraction.