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Tests for valid HTML hexadecimal color codes. The # symbol is optional. And it will except either the 3 digit form for the 216 Web safe colors, or the full 6 digit form. I am use it on my site to allow users to customize the site's colors.

Validates a dollar amount including a dollar sign and 2 decmals. The decimal and cents are optional.

Most Concise RegExp for matching Decimal IPs. If nothing else, it'll make your code easier to read. (And I know that \d?\d is \d{1,2} but that's 2 extra characters.) --Update: darkone noticed 8 characters could be shaved down. I've edited it to reflect this. Thanks, darkone!

This is a pattern to search and verify that a decimal number ends with a 25, 50, 75, 0 or 00. It does match for a nothing after decimal also but I guess thats ok !!

This regex match numeric data in the following format: thousands are separated by (') apostrophe, decimal places are separated by dot (.) Maximum three decimal places are not required. It's easy to change to other separators as well.

This matches any real number, with optional decimal point and numbers after the decimal, and optional positive (+) or negative (-) designation.

This regular expression validates that the data entered is a number with a maximum of two integers and two decimals and a minimum of one integer or one decimal.

This will grep for a valid MAC address , with colons seperating octets. It will ignore strings too short or long, or with invalid characters. It will accept mixed case hexadecimal. Use extended grep.

matches non-negative decimal floating points numbers less than 10

This regular expression validates a number NOT 0, with no more than 5 places ahead and 3 places behind the decimal point.

A regular expression that matches numbers. Integers or decimal numbers with or without the exponential form.

Many currency expresssions allow leading zeros, thus $01.40 passes thru them. This expression kills them, except for 0 in the one's column. Works with or without commas and/or dollar sign. Decimals not mandatory, unless no zero in ones column and decimal point is placed. Allows $0.00 and .0 Keywords: money dollar currency

This is permit all decimal number, exclude all alphanumeric caracter

Accepts only positive decimal values. Zero and negatvie numbers are non-matching. Allows zeros after last non-zero numeric value after decimal place for significant digits.

Accepts only negative decimal values. Zero and positive numbers are non-matching. Allows zeros after last non-zero numeric value after decimal place for significant digits.

Matches Numeric with Commas and a single decimal point. Also matches empty string.

An expression for .NET regular expression validation controls intended to faciliate the entry of percentage values both a whole numbers or as their decimal representations. Also compatible with the default US format for string formatting for percentages. Recommend that if you intended accept a value passing this express that you strip the percentage signs and take measures to ensure that any whole values are converted to percentages.

Input for Numeric values. Handles negatives, and comma formatted values. Also handles a single decimal point

Validates Microsoft Project-type duration entries. Accepts a number and a unit. The number part can be integer or decimal. The unit can be several variations of weeks, days, and hours: e.g., w, wk, week, ws, wks, weeks are all valid. Whitespace between the number and the unit is optional: e.g., 1d, 2 days, 3.5w are all valid. Captures the number value in a group named num and the unit string in a group named 'unit'.

Accept only (0-9) integer and one decimal point(decimal point is also optional).After decimal point it accepts at least one numeric .This will be usefull in money related fields or decimal fields.