Number Formatter
Format numbers as currency, percentage, scientific notation, or with custom separators.
About this tool
The Number Formatter is a versatile tool designed to transform raw numbers into professionally formatted output suitable for reports, presentations, and data analysis. Whether you need to display currency values, percentages, scientific notation, or custom number patterns, this tool handles the conversion instantly without leaving your browser. It's indispensable for developers, accountants, researchers, and anyone working with numerical data that demands precise formatting.
Using the Number Formatter is straightforward: enter your number, choose your desired format from the options (currency with locale-specific symbols, percentage with custom decimal places, scientific notation for very large or small numbers, or custom separators for thousands and decimals), and the formatted result appears immediately. You can process multiple numbers in succession and copy results directly to your clipboard, making it ideal for batch formatting tasks in spreadsheets, documentation, or data validation workflows.
Frequently Asked Questions
Code Implementation
# Built-in f-string and format() number formatting
n = 1234567.891
# Thousands separator + 2 decimal places
print(f"{n:,.2f}") # 1,234,567.89
print(format(n, ',.2f')) # 1,234,567.89
# No decimal places (integer-style)
print(f"{n:,.0f}") # 1,234,568
# Scientific notation
print(f"{n:.3e}") # 1.235e+06
# Percentage
ratio = 0.1234
print(f"{ratio:.1%}") # 12.3%
# Left/right pad with width
print(f"{n:>15,.2f}") # 1,234,567.89
# Locale-aware formatting with the babel library
# pip install babel
from babel.numbers import format_number, format_currency
print(format_number(n, locale='de_DE')) # 1.234.567,891
print(format_number(n, locale='fr_FR')) # 1 234 567,891
print(format_currency(1234.5, 'USD', locale='en_US')) # $1,234.50
print(format_currency(1234.5, 'EUR', locale='de_DE')) # 1.234,50 β¬
print(format_currency(1500, 'JPY', locale='ja_JP')) # Β₯1,500Comments & Feedback
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