diff --git a/CHANGELOG.unreleased.md b/CHANGELOG.unreleased.md
index c7edb77d3..16edb2307 100644
--- a/CHANGELOG.unreleased.md
+++ b/CHANGELOG.unreleased.md
@@ -10,6 +10,7 @@
 - [VM/Snapshots] Always delete broken quiesced snapshots [#4074](https://github.com/vatesfr/xen-orchestra/issues/4074) (PR [#4075](https://github.com/vatesfr/xen-orchestra/pull/4075))
 - [Settings/Servers] Display link to pool [#4041](https://github.com/vatesfr/xen-orchestra/issues/4041) (PR [#4045](https://github.com/vatesfr/xen-orchestra/pull/4045))
 - [Import] Change wording of drop zone (PR [#4020](https://github.com/vatesfr/xen-orchestra/pull/4020))
+- [Backup NG] Ability to set the interval of the full backups [#1783](https://github.com/vatesfr/xen-orchestra/issues/1783) (PR [#4083](https://github.com/vatesfr/xen-orchestra/pull/4083))
 
 ### Bug fixes
 
diff --git a/packages/xo-web/src/common/intl/messages.js b/packages/xo-web/src/common/intl/messages.js
index c6c01a9dc..cfb8fc38b 100644
--- a/packages/xo-web/src/common/intl/messages.js
+++ b/packages/xo-web/src/common/intl/messages.js
@@ -443,6 +443,7 @@ const messages = {
   offlineSnapshotInfo: 'Shutdown VMs before snapshotting them',
   timeout: 'Timeout',
   timeoutInfo: 'Number of hours after which a job is considered failed',
+  fullBackupInterval: 'Full backup interval',
   timeoutUnit: 'in hours',
   dbAndDrRequireEnterprisePlan: 'Delta Backup and DR require Enterprise plan',
   crRequiresPremiumPlan: 'CR requires Premium plan',
diff --git a/packages/xo-web/src/xo-app/backup-ng/_getSettingsWithNonDefaultValue.js b/packages/xo-web/src/xo-app/backup-ng/_getSettingsWithNonDefaultValue.js
index 2d0485628..707621c49 100644
--- a/packages/xo-web/src/xo-app/backup-ng/_getSettingsWithNonDefaultValue.js
+++ b/packages/xo-web/src/xo-app/backup-ng/_getSettingsWithNonDefaultValue.js
@@ -5,6 +5,7 @@ const DEFAULTS = {
 
   compression: '',
   concurrency: 0,
+  fullInterval: 0,
   offlineSnapshot: false,
   timeout: 0,
 }
diff --git a/packages/xo-web/src/xo-app/backup-ng/index.js b/packages/xo-web/src/xo-app/backup-ng/index.js
index ede04b2a4..cb757acc1 100644
--- a/packages/xo-web/src/xo-app/backup-ng/index.js
+++ b/packages/xo-web/src/xo-app/backup-ng/index.js
@@ -249,6 +249,7 @@ class JobsTable extends React.Component {
           const {
             compression,
             concurrency,
+            fullInterval,
             offlineSnapshot,
             reportWhen,
             timeout,
@@ -268,6 +269,9 @@ class JobsTable extends React.Component {
               {timeout !== undefined && (
                 <Li>{_.keyValue(_('timeout'), timeout / 3600e3)} hours</Li>
               )}
+              {fullInterval !== undefined && (
+                <Li>{_.keyValue(_('fullBackupInterval'), fullInterval)}</Li>
+              )}
               {offlineSnapshot !== undefined && (
                 <Li>
                   {_.keyValue(
diff --git a/packages/xo-web/src/xo-app/backup-ng/new/index.js b/packages/xo-web/src/xo-app/backup-ng/new/index.js
index 431c4b0e4..789b7ae80 100644
--- a/packages/xo-web/src/xo-app/backup-ng/new/index.js
+++ b/packages/xo-web/src/xo-app/backup-ng/new/index.js
@@ -520,6 +520,12 @@ export default decorate([
           value: value && value * 3600e3,
         })
       },
+      setFullInterval({ setGlobalSettings }, value) {
+        setGlobalSettings({
+          name: 'fullInterval',
+          value,
+        })
+      },
       setOfflineSnapshot: (
         { setGlobalSettings },
         { target: { checked: value } }
@@ -534,6 +540,7 @@ export default decorate([
       compressionId: generateId,
       formId: generateId,
       inputConcurrencyId: generateId,
+      inputFullIntervalId: generateId,
       inputReportWhenId: generateId,
       inputTimeoutId: generateId,
 
@@ -631,9 +638,14 @@ export default decorate([
   ({ state, effects, remotes, srsById, job = {}, intl }) => {
     const { formatMessage } = intl
     const { propSettings, settings = propSettings } = state
-    const { concurrency, reportWhen = 'failure', offlineSnapshot, timeout } =
-      settings.get('') || {}
     const compression = defined(state.compression, job.compression, '')
+    const {
+      concurrency,
+      fullInterval,
+      offlineSnapshot,
+      reportWhen = 'failure',
+      timeout,
+    } = settings.get('') || {}
 
     if (state.needUpdateParams) {
       effects.updateParams()
@@ -923,6 +935,16 @@ export default decorate([
                           placeholder={formatMessage(messages.timeoutUnit)}
                         />
                       </FormGroup>
+                      <FormGroup>
+                        <label htmlFor={state.inputFullIntervalId}>
+                          <strong>{_('fullBackupInterval')}</strong>
+                        </label>{' '}
+                        <Number
+                          id={state.inputFullIntervalId}
+                          onChange={effects.setFullInterval}
+                          value={fullInterval}
+                        />
+                      </FormGroup>
                       {state.isFull && (
                         <FormGroup>
                           <label htmlFor={state.compressionId}>