Localization allows you to present the interface of the Gantt chart in the language you'd like: English, Spanish, French, etc. By default, dhtmlxGantt uses English locale.

Activating a locale

To implement the Gantt chart in non-English language, you need to activate the necessary locale via the setLocale method of the gantt.i18n object.


You can use and update any of the predefined locales that are bundled with the dhtmlxgantt.js file or define a custom locale.

The locale can be switched dynamically but the changes will be applied only after a complete redrawing of the Gantt chart either with the gantt.render() or gantt.init() call.


Related sample:  Localization

Predefined locales

Language Language code Translation status
Arabic ar partial
Belarusian be full
English en full
Catalan ca partial
Chinese cn partial
Croatian hr full
Czech cs partial
Danish da partial
Dutch nl partial
Finnish fi partial
French fr full
German de full
Greek el partial
Hebrew he partial
Hungarian hu partial
Indonesian id partial
Italian it partial
Japanese jp partial
Korean kr partial
Norwegian no partial
Norwegian Bokmål nb partial
Persian fa full
Polish pl partial
Portuguese pt partial
Romanian ro partial
Russian ru full
Slovak sk partial
Slovenian si partial
Spanish es partial
Swedish sv partial
Turkish tr partial
Ukrainian ua partial

Creating a custom locale

The gantt.i18n object is added in v7.0. In previous versions, the gantt.locale object was used. For more information, see the Migration article.

The easiest way to create a custom locale is to make a copy of the default (English) locale from the sample below, and translate all strings from it into the required language.

The custom locale can be applied to the Gantt chart in two ways:

  • either override the current locale via passing an object of the locale as a parameter to the setLocale method:

Note, if you provide a partial locale object, gantt will add your labels into the current locale:

    labels: {
        new_task: "New task"
  • or, if you need to switch between several locales, define the locale with a custom language code and switch the gantt to it later:
gantt.i18n.addLocale("lang", localeObject); 


  • You can send your custom locale file to support@dhtmlx.com - so we will include it in the next release.
  • The currently active locale is also available in the gantt.locale object
  • monthFull - the full names of months starting from January;
  • monthShort - the short names of months starting from January;
  • dayFull - the full names of week days starting from Sunday;
  • dayShort - the short names of week days starting from Sunday.

English locale definition

    date: {
        month_full: ["January", "February", "March", "April", "May", "June", 
            "July", "August", "September", "October", "November", "December"],
        month_short: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", 
            "Aug", "Sep", "Oct", "Nov", "Dec"],
        day_full: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday",
             "Friday", "Saturday"],
        day_short: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"]
    labels: {
        new_task: "New task",
        icon_save: "Save",
        icon_cancel: "Cancel",
        icon_details: "Details",
        icon_edit: "Edit",
        icon_delete: "Delete",
        gantt_save_btn: "New Label",
        gantt_cancel_btn: "New Label",
        gantt_delete_btn: "New Label",
        confirm_closing: "",// Your changes will be lost, are you sure?
        confirm_deleting: "Task will be deleted permanently, are you sure?",
        section_description: "Description",
        section_time: "Time period",
        section_type: "Type",
        /* grid columns */
        column_wbs: "WBS",
        column_text: "Task name",
        column_start_date: "Start time",
        column_duration: "Duration",
        column_add: "",
        /* link confirmation */
        link: "Link",
        confirm_link_deleting: "will be deleted",
        link_start: " (start)",
        link_end: " (end)",
        type_task: "Task",
        type_project: "Project",
        type_milestone: "Milestone",
        minutes: "Minutes",
        hours: "Hours",
        days: "Days",
        weeks: "Week",
        months: "Months",
        years: "Years",
        /* message popup */
        message_ok: "OK",
        message_cancel: "Cancel",
        /* constraints */
        section_constraint: "Constraint",
        constraint_type: "Constraint type",
        constraint_date: "Constraint date",
        asap: "As Soon As Possible",
        alap: "As Late As Possible",
        snet: "Start No Earlier Than",
        snlt: "Start No Later Than",
        fnet: "Finish No Earlier Than",
        fnlt: "Finish No Later Than",
        mso: "Must Start On",
        mfo: "Must Finish On",
        /* resource control */
        resources_filter_placeholder: "type to filter",
        resources_filter_label: "hide empty"
  • If the confirm_closing or confirm_deleting label is not defined - the related confirm dialog will not be shown at all (auto-confirm);
  • The section_{name} label refers to the lightbox section of the related name.
  • The new_task label defines the default text of a new event.
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