Template:Round/doc

Usage

This template rounds parameter 1 by parameter 2 decimal places (goes the other way for negative rounding) and includes trailing zeros.

• {{Round|54.376|2}} → 54.38
• {{Round|54.376|-1}} → 50
• {{Round|68.4273E12|-10}} → 6.843×10¹³

For example, rounding by 1 gives 1 decimal digit, rounding by 0 gives integers, or rounding by -2 gives the amount in hundreds. Scientific notation is displayed for numbers greater than or equal to 1×10⁹, or less than 1×10⁻⁴.

Examples

• {{Round|2.0004|3}} → 2.000
  • {{expr:2.0004 round 3}} → 2
• {{Round|0.000020004|7}} → 000
• {{Round|0|8}} → 0.00000000
• {{Round|154268|-3}} → 154,000
• {{Round|154568|-3}} → 155,000
• {{Round|1200004|-1}} → 1,200,000
  • whereas {{expr:1200004round-1}} → 1200000, even though {{expr:1300004round-1}} → 1300000 (see m:Help:Format produced by expr)
• {{Round|1300004|-1}} → 1,300,000
• {{Round|4.1e6|9}} → 4,100,000.000000000
• {{Round|4.1e6|10}} → 4,100,000.0000000000
• {{Round|1542689271|-7}} → 1.54×10⁹
• {{Round|1542689271|2}} → 1.54268927100×10⁹
• {{Round|7e9|-9}} → 7×10⁹
• {{Round|-123|1}} → −123.0
• {{Round|-1200007|-2}} → −1,200,000
• {{Round|-1234567899|-7}} → −1.23×10⁹

As with #expr, the total number of significant digits is not more than 14:

• {{Round|1234567890.123456789|10}} → 1.2345678901235×10⁹
• {{Round|123456789.0123456789|10}} → 123,456,789.01235
• {{Round|.0001234567890123456789|20}} → 0.00012345678901235

The second parameter, precision, should be an integer. Non-integer may give unexpected result.

• {{Round|1.234567}} → 1
• {{Round|1.234567|2}} → 1.23
• {{Round|1.234567|2.3}} → 1.2329205947231
• {{Round|1.234567|2.7}} → 1.2350673729657

TemplateData

This is the TemplateData for this template used by TemplateWizard, VisualEditor and other tools. See a monthly parameter usage report for Template:Round in articles based on its TemplateData.

TemplateData for Round

<templatedata>{ "description": "Rounds (parameter 1) by (parameter 2) decimal places, and formats. Scientific notation is used for numbers greater than 1×10^9, or less than 1×10^−4.", "params": {

 "1": {
   "label": "number",
   "description": "The number to be rounded",
   "type": "number",
   "required": true
 },
 "2": {
   "label": "decimal places",
   "description": "The number of decimal places, if negative the number is rounded so the last (parameter 2) digits are zero",
   "type": "number",
   "required": true
 }

}}</templatedata>

Maintenance categories

• Category:Pages with bad rounding precision (0)

See also

• {{Rounded calculation}}
• {{Significant figures}}
• {{Roundup}}
• {{Rounddown}}