Scientific Notation to Standard Form Calculator

Scientific notation

Accepts aEb, a×10^b, or a x 10^b. Commas ignored.

Precision mode

Decimals (if fixed)

Used only when Precision mode = Fixed decimals.

Group thousands

Trim trailing zeros

Current Conversion Mode: Auto

Input: —

Standard (plain): —

Standard (grouped): —

LaTeX: —

Results Table

#	Input	Exponent	Mode	Standard (plain)	Standard (grouped)	LaTeX

Example Data

#	Scientific notation	Expected standard form
1	3.2e-7	0.00000032
2	-4.5×10^8	-450000000
3	7.01 x 10^5	701000
4	9.99e3	9990
5	-6.002e-3	-0.006002
6	1.23456789e-10	0.000000000123456789

Formula Used

Scientific notation expresses a number as a × 10^b where a is the mantissa (significant digits) and b is an integer exponent. To convert to standard form, shift the decimal point in a by b places:

If b > 0, move the decimal point right by b places, padding zeros if necessary.
If b < 0, move the decimal point left by |b| places, padding zeros to the left of the digits and prefixing 0..

This tool performs the shift using string arithmetic to avoid floating-point rounding, and optionally rounds to a fixed number of decimal places if requested.

Reference: Powers of Ten Quick Table

Exponent b	Notation	Decimal movement	Example (6.5×10^b)

Normalization Patterns & Examples

Original input	Normalized aEb	Mantissa a	Exponent b	Standard form

How to Use This Calculator

Enter a value like 3.2e-7, -4.5×10^8, or 7.01 x 10^5.
Choose Auto to keep exact digits, or Fixed decimals for rounding.
Toggle Group thousands and Trim trailing zeros as needed.
Click Convert to preview; click Add to results to build a table.
Use Export CSV or Export PDF to download the table.

Tip: You can click “Use” on any example row to paste it into the input instantly.

FAQs

1) What input formats are accepted?

Use aEb (e.g., 2.5e6), or a×10^b / a x 10^b. Spaces and commas are ignored.

2) How do you avoid floating-point errors?

All conversions use string operations on digits and the exponent shift; no binary floating-point arithmetic is used for the core transformation.

3) What happens with extremely large exponents?

The algorithm pads zeros and builds strings directly, so even exponents with thousands of places are supported within browser memory limits.

4) Why do I see trailing zeros?

When Fixed decimals is chosen, the output is rounded and padded to the chosen width; disable fixed decimals or enable Trim trailing zeros to remove them.

5) Can I copy LaTeX?

Yes. The LaTeX field shows a\\times10^{b} for the input and the standard number; use the copy button to paste into documents.

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