Telerik UI for Windows 8 HTML

This article lists the options for customizing RadNumericBox and provides some examples of common scenarios involving the control.


You can set the culture locally for the control. The culture property takes any valid BCP-47 language tag as a value. The floating point sign, the currency sign and other display preferences depend on the culture property. For more information regarding Telerik culture support you can visit this article: Culture Support.

Formatting Example Copy imageCopy
<span id="NumericBoxFR" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        culture: 'fr-FR',
        format: 'c2',


You can use the format property to provide a format string for the values displayed inside the RadNumericBox. Check the Formatting article for detailed descriptions of the different options for formatting the control's value.

Formatting Example Copy imageCopy
<span id="NumericBoxFR" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        culture: 'fr-FR',
        format: 'c2',


To modify the precision of the control, use the decimals property. It sets the number of digits shown after the decimal separator. If it is not set, it will use the default precision defined by the current culture. Make sure the number format allows displaying the desired precision in view mode of the numeric box.

Precision Copy imageCopy
<span id="numericBox2" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        decimals: 3,
        format: '0.000'

Min and Max Value

Using the min and/or max options, you can produce a range of allowed values for the control. If the user tries to enter a value outside of the provided range, it will be reset to the closest allowed. For example: if the min property is set to 3, and the user enters 0, the value of the numeric box will be automatically corrected to 3.

Furthermore, if you try to set a value outside of the allowed range of the control manually through the value property, it will not be set. Also, no auto-correction will be performed in such case—the current value (even if empty) will be preserved. The code sample below shows how to set a min value of 0 and max value of 255.

Min and Max Value Example Copy imageCopy
<span id="numericBox3" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        min: 0,
        max: 255,
        placeholder: '(0 to 255)'

Increment/decrement Step

You can use the step option to control at what step the value will change when pressing the increase/decrease buttons or using the mousewheel or the swipe command. The sample below demonstrates changing the step to 0.1.

Increment/decrement step Copy imageCopy
<span id="numericBox4" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        min: 0,
        max: 1,
        step: 0.1


By default, when you swipe away from the input box, the numeric value increments/decrements depending on the direction, the distance and the increment/decrement step, set by the step and sensitivity properties. To disable the swipe command on the RadNumericBox, you must set the swipe property value to false.

Swipe Copy imageCopy
<span id="numericBox5" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        swipe: false

Swipe Sensitivity

To set how far you have to swipe (in px) before the numeric value increments/decrements by a step, use the sensitivity property. Please note, that the sensitivity property has an effect only if the swipe property is set to true.

Sensitivity Copy imageCopy
<span id="numericBox6" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        step: 0.01,
        sensitivity: 50

Mouse Wheel

By default, the mouse wheel can be used to "scroll" through numeric values in steps, set by the step property. In order to disable the mouse wheel option, you must set the wheel property value to false.

Mousewheel Copy imageCopy
<span id="numericBox7" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        wheel: false

Showing Empty Text

To display text that prompts the user about the expected value in RadNumericBox when there is no value set, use the placeholder property. The code sample below show how to use the placehoder property to ask the user to enter their age.

Showing Empty Text Example Copy imageCopy
<span id="numericBox8" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        placeholder: 'Enter your age'


By default, when you hover over the increment and decrement buttons, tooltips are displayed, saying "Increase value" and "Decrease value". If you want to modify the text shown by the tooltips, set the incrementTooltip and decrementTooltip properties to the desired string values.

Tooltips Copy imageCopy
<span id="numericBox9" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        incrementTooltip: '+1',
        decrementTooltip: '-1',
        value: 20,
        format: 'n0'

Disabling the Control

To prevent user interaction with the control at one point and allow it later, you can set the enabled property value to true or false. When set to false, the buttons and input box become inactive.

Disabling the control Copy imageCopy
<span id="numericBox10" data-win-control="Telerik.UI.RadNumericBox" data-win-options="{
        enabled: false