diff --git a/client/src/pages/AdminCalendrier.tsx b/client/src/pages/AdminCalendrier.tsx
index 1f7b78e..58cd1bb 100644
--- a/client/src/pages/AdminCalendrier.tsx
+++ b/client/src/pages/AdminCalendrier.tsx
@@ -9,17 +9,39 @@ import {
   DialogHeader,
   DialogTitle,
 } from "@/components/ui/dialog";
+import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from "@/components/ui/select";
 import { trpc } from "@/lib/trpc";
-import { ChevronLeft, ChevronRight, Calendar as CalendarIcon } from "lucide-react";
-import { format, startOfMonth, endOfMonth, eachDayOfInterval, isSameMonth, isSameDay, parseISO, addMonths, subMonths } from "date-fns";
+import { ChevronLeft, ChevronRight, Calendar as CalendarIcon, Filter, Download } from "lucide-react";
+import { format, startOfMonth, endOfMonth, eachDayOfInterval, isSameMonth, isSameDay, parseISO, addMonths, subMonths, startOfWeek, endOfWeek, addWeeks, subWeeks, addDays, subDays } from "date-fns";
 import { fr } from "date-fns/locale";
 
+type ViewMode = 'month' | 'week' | 'day';
+
 export default function AdminCalendrier() {
   const [currentDate, setCurrentDate] = useState(new Date());
   const [selectedSequence, setSelectedSequence] = useState<any>(null);
   const [isDetailOpen, setIsDetailOpen] = useState(false);
+  const [viewMode, setViewMode] = useState<ViewMode>('month');
+  const [filterFormation, setFilterFormation] = useState<string>('all');
+  const [filterLieu, setFilterLieu] = useState<string>('all');
+  const [filterPublicCible, setFilterPublicCible] = useState<string>('all');
 
   const { data: sequences, isLoading } = trpc.sequences.list.useQuery();
+  const { data: formations } = trpc.formations.list.useQuery();
+
+  // Filtrer les séquences selon les critères
+  const filteredSequences = sequences?.filter((seq) => {
+    if (filterFormation !== 'all' && seq.formationId !== parseInt(filterFormation)) return false;
+    if (filterLieu !== 'all' && seq.lieu !== filterLieu) return false;
+    if (filterPublicCible !== 'all' && seq.publicCible !== filterPublicCible) return false;
+    return true;
+  }) || [];
+
+  // Extraire les lieux uniques pour le filtre
+  const uniqueLieux = Array.from(new Set(sequences?.map(s => s.lieu).filter(Boolean))) as string[];
+
+  // Extraire les publics cibles uniques
+  const uniquePublicsCibles = Array.from(new Set(sequences?.map(s => s.publicCible).filter(Boolean))) as string[];
 
   const monthStart = startOfMonth(currentDate);
   const monthEnd = endOfMonth(currentDate);
@@ -35,8 +57,8 @@ export default function AdminCalendrier() {
   ];
 
   const getSequencesForDay = (day: Date) => {
-    if (!sequences) return [];
-    return sequences.filter((seq) => {
+    if (!filteredSequences) return [];
+    return filteredSequences.filter((seq) => {
       if (!seq.dates || seq.dates.length === 0) return false;
       return seq.dates.some((dateForm: any) => {
         // Gérer le cas où dateDebut est déjà un objet Date ou une chaîne
@@ -53,12 +75,24 @@ export default function AdminCalendrier() {
     });
   };
 
-  const handlePreviousMonth = () => {
-    setCurrentDate(subMonths(currentDate, 1));
+  const handlePrevious = () => {
+    if (viewMode === 'month') {
+      setCurrentDate(subMonths(currentDate, 1));
+    } else if (viewMode === 'week') {
+      setCurrentDate(subWeeks(currentDate, 1));
+    } else {
+      setCurrentDate(subDays(currentDate, 1));
+    }
   };
 
-  const handleNextMonth = () => {
-    setCurrentDate(addMonths(currentDate, 1));
+  const handleNext = () => {
+    if (viewMode === 'month') {
+      setCurrentDate(addMonths(currentDate, 1));
+    } else if (viewMode === 'week') {
+      setCurrentDate(addWeeks(currentDate, 1));
+    } else {
+      setCurrentDate(addDays(currentDate, 1));
+    }
   };
 
   const handleSequenceClick = (sequence: any) => {
@@ -66,6 +100,56 @@ export default function AdminCalendrier() {
     setIsDetailOpen(true);
   };
 
+  const handleExportPDF = () => {
+    window.print();
+  };
+
+  const handleExportICal = () => {
+    const icalContent = [
+      'BEGIN:VCALENDAR',
+      'VERSION:2.0',
+      'PRODID:-//Formation Manager Itinova//FR',
+      'CALSCALE:GREGORIAN',
+      'METHOD:PUBLISH',
+      'X-WR-CALNAME:Calendrier des formations',
+      'X-WR-TIMEZONE:Europe/Paris',
+    ];
+
+    filteredSequences.forEach((seq) => {
+      if (seq.dates && seq.dates.length > 0) {
+        seq.dates.forEach((dateForm: any) => {
+          const dateDebut = typeof dateForm.dateDebut === 'string' ? parseISO(dateForm.dateDebut) : dateForm.dateDebut;
+          const dateFin = typeof dateForm.dateFin === 'string' ? parseISO(dateForm.dateFin) : dateForm.dateFin;
+          
+          const dtstart = format(dateDebut, "yyyyMMdd'T'HHmmss");
+          const dtend = format(dateFin, "yyyyMMdd'T'HHmmss");
+          
+          icalContent.push(
+            'BEGIN:VEVENT',
+            `UID:${seq.id}-${dateForm.id || Math.random()}@formation-manager.itinova`,
+            `DTSTAMP:${format(new Date(), "yyyyMMdd'T'HHmmss'Z'")}`,
+            `DTSTART:${dtstart}`,
+            `DTEND:${dtend}`,
+            `SUMMARY:${seq.nom}`,
+            `DESCRIPTION:${seq.formation?.nom || 'Formation'} - ${seq.nbInscrits || 0}/${seq.capaciteMax} inscrits`,
+            `LOCATION:${seq.lieu}`,
+            'STATUS:CONFIRMED',
+            'SEQUENCE:0',
+            'END:VEVENT'
+          );
+        });
+      }
+    });
+
+    icalContent.push('END:VCALENDAR');
+    
+    const blob = new Blob([icalContent.join('\r\n')], { type: 'text/calendar;charset=utf-8' });
+    const link = document.createElement('a');
+    link.href = URL.createObjectURL(blob);
+    link.download = `calendrier-formations-${format(currentDate, "yyyy-MM")}.ics`;
+    link.click();
+  };
+
   const getPublicCibleLabel = (publicCible: string) => {
     const labels: Record<string, string> = {
       directeurs: "Directeurs",
@@ -95,38 +179,131 @@ export default function AdminCalendrier() {
           </p>
         </div>
 
+        {/* Filtres */}
         <Card>
           <CardHeader>
-            <div className="flex items-center justify-between">
-              <div>
-                <CardTitle className="flex items-center gap-2">
-                  <CalendarIcon className="h-5 w-5" />
-                  {format(currentDate, "MMMM yyyy", { locale: fr })}
-                </CardTitle>
-                <CardDescription>
-                  Cliquez sur une séquence pour voir les détails
-                </CardDescription>
+            <div className="space-y-4">
+              <div className="flex items-center justify-between">
+                <div>
+                  <CardTitle className="flex items-center gap-2">
+                    <CalendarIcon className="h-5 w-5" />
+                    Calendrier des séquences
+                  </CardTitle>
+                  <CardDescription>
+                    Cliquez sur une séquence pour voir les détails
+                  </CardDescription>
+                </div>
+                <div className="flex gap-2">
+                  <Select value={viewMode} onValueChange={(value) => setViewMode(value as ViewMode)}>
+                    <SelectTrigger className="w-[130px]">
+                      <SelectValue />
+                    </SelectTrigger>
+                    <SelectContent>
+                      <SelectItem value="month">Mois</SelectItem>
+                      <SelectItem value="week">Semaine</SelectItem>
+                      <SelectItem value="day">Jour</SelectItem>
+                    </SelectContent>
+                  </Select>
+                </div>
               </div>
-              <div className="flex gap-2">
-                <Button variant="outline" size="icon" onClick={handlePreviousMonth}>
-                  <ChevronLeft className="h-4 w-4" />
-                </Button>
-                <Button
-                  variant="outline"
-                  onClick={() => setCurrentDate(new Date())}
-                >
-                  Aujourd'hui
-                </Button>
-                <Button variant="outline" size="icon" onClick={handleNextMonth}>
-                  <ChevronRight className="h-4 w-4" />
-                </Button>
+
+              {/* Barre de filtres */}
+              <div className="flex items-center gap-3 flex-wrap">
+                <div className="flex items-center gap-2">
+                  <Filter className="h-4 w-4 text-muted-foreground" />
+                  <span className="text-sm font-medium">Filtres :</span>
+                </div>
+                <Select value={filterFormation} onValueChange={setFilterFormation}>
+                  <SelectTrigger className="w-[200px]">
+                    <SelectValue placeholder="Formation" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="all">Toutes les formations</SelectItem>
+                    {formations?.map((formation) => (
+                      <SelectItem key={formation.id} value={formation.id.toString()}>
+                        {formation.nom}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+                <Select value={filterLieu} onValueChange={setFilterLieu}>
+                  <SelectTrigger className="w-[180px]">
+                    <SelectValue placeholder="Lieu" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="all">Tous les lieux</SelectItem>
+                    {uniqueLieux.map((lieu) => (
+                      <SelectItem key={lieu} value={lieu}>
+                        {lieu}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+                <Select value={filterPublicCible} onValueChange={setFilterPublicCible}>
+                  <SelectTrigger className="w-[180px]">
+                    <SelectValue placeholder="Public cible" />
+                  </SelectTrigger>
+                  <SelectContent>
+                    <SelectItem value="all">Tous les publics</SelectItem>
+                    {uniquePublicsCibles.map((pc) => (
+                      <SelectItem key={pc} value={pc}>
+                        {getPublicCibleLabel(pc)}
+                      </SelectItem>
+                    ))}
+                  </SelectContent>
+                </Select>
+                {(filterFormation !== 'all' || filterLieu !== 'all' || filterPublicCible !== 'all') && (
+                  <Button
+                    variant="ghost"
+                    size="sm"
+                    onClick={() => {
+                      setFilterFormation('all');
+                      setFilterLieu('all');
+                      setFilterPublicCible('all');
+                    }}
+                  >
+                    Réinitialiser
+                  </Button>
+                )}
+              </div>
+
+              {/* Navigation et exports */}
+              <div className="flex items-center justify-between">
+                <h3 className="text-lg font-semibold">
+                  {viewMode === 'month' && format(currentDate, "MMMM yyyy", { locale: fr })}
+                  {viewMode === 'week' && `Semaine du ${format(startOfWeek(currentDate, { locale: fr }), "d MMM", { locale: fr })}`}
+                  {viewMode === 'day' && format(currentDate, "EEEE d MMMM yyyy", { locale: fr })}
+                </h3>
+                <div className="flex gap-2">
+                  <Button variant="outline" size="sm" onClick={handleExportPDF}>
+                    <Download className="h-4 w-4 mr-2" />
+                    PDF
+                  </Button>
+                  <Button variant="outline" size="sm" onClick={handleExportICal}>
+                    <Download className="h-4 w-4 mr-2" />
+                    iCal
+                  </Button>
+                  <div className="border-l mx-1" />
+                  <Button variant="outline" size="icon" onClick={handlePrevious}>
+                    <ChevronLeft className="h-4 w-4" />
+                  </Button>
+                  <Button
+                    variant="outline"
+                    onClick={() => setCurrentDate(new Date())}
+                  >
+                    Aujourd'hui
+                  </Button>
+                  <Button variant="outline" size="icon" onClick={handleNext}>
+                    <ChevronRight className="h-4 w-4" />
+                  </Button>
+                </div>
               </div>
             </div>
           </CardHeader>
           <CardContent>
             {isLoading ? (
               <div className="text-center py-8">Chargement...</div>
-            ) : (
+            ) : viewMode === 'month' ? (
               <div className="grid grid-cols-7 gap-2">
                 {/* En-têtes des jours */}
                 {["Lun", "Mar", "Mer", "Jeu", "Ven", "Sam", "Dim"].map((day) => (
@@ -184,6 +361,81 @@ export default function AdminCalendrier() {
                   );
                 })}
               </div>
+            ) : viewMode === 'week' ? (
+              <div className="space-y-4">
+                <div className="grid grid-cols-8 gap-2">
+                  <div className="text-center font-semibold text-sm text-muted-foreground py-2">Heure</div>
+                  {Array.from({ length: 7 }).map((_, i) => {
+                    const day = addDays(startOfWeek(currentDate, { locale: fr }), i);
+                    return (
+                      <div key={i} className="text-center">
+                        <div className="font-semibold text-sm">{format(day, "EEE", { locale: fr })}</div>
+                        <div className="text-xs text-muted-foreground">{format(day, "d MMM", { locale: fr })}</div>
+                      </div>
+                    );
+                  })}
+                </div>
+                <div className="text-sm text-muted-foreground text-center py-8">
+                  Vue hebdomadaire - Affichage des séquences par jour
+                </div>
+                {Array.from({ length: 7 }).map((_, i) => {
+                  const day = addDays(startOfWeek(currentDate, { locale: fr }), i);
+                  const daySequences = getSequencesForDay(day);
+                  return daySequences.length > 0 ? (
+                    <div key={i} className="space-y-2">
+                      <h4 className="font-medium text-sm">{format(day, "EEEE d MMMM", { locale: fr })}</h4>
+                      <div className="grid gap-2">
+                        {daySequences.map((seq) => (
+                          <button
+                            key={seq.id}
+                            onClick={() => handleSequenceClick(seq)}
+                            className="w-full text-left p-3 rounded-lg border bg-card hover:bg-accent transition-colors"
+                          >
+                            <div className="font-medium">{seq.nom}</div>
+                            <div className="text-sm text-muted-foreground">{seq.formation?.nom || "Sans formation"}</div>
+                            <div className="text-sm text-muted-foreground">
+                              {seq.lieu} • {seq.nbInscrits || 0}/{seq.capaciteMax} inscrits
+                            </div>
+                          </button>
+                        ))}
+                      </div>
+                    </div>
+                  ) : null;
+                })}
+              </div>
+            ) : (
+              <div className="space-y-4">
+                <div className="text-center">
+                  <h3 className="text-lg font-semibold">{format(currentDate, "EEEE d MMMM yyyy", { locale: fr })}</h3>
+                </div>
+                {getSequencesForDay(currentDate).length > 0 ? (
+                  <div className="grid gap-3">
+                    {getSequencesForDay(currentDate).map((seq) => (
+                      <button
+                        key={seq.id}
+                        onClick={() => handleSequenceClick(seq)}
+                        className="w-full text-left p-4 rounded-lg border bg-card hover:bg-accent transition-colors"
+                      >
+                        <div className="flex items-start justify-between">
+                          <div className="flex-1">
+                            <div className="font-semibold text-lg">{seq.nom}</div>
+                            <div className="text-sm text-muted-foreground mt-1">{seq.formation?.nom || "Sans formation"}</div>
+                            <div className="flex items-center gap-4 mt-2 text-sm">
+                              <span>📍 {seq.lieu}</span>
+                              <span>👥 {seq.nbInscrits || 0}/{seq.capaciteMax} inscrits</span>
+                              {seq.formateur && <span>👨‍🏫 {typeof seq.formateur === 'object' ? seq.formateur.nom : seq.formateur}</span>}
+                            </div>
+                          </div>
+                        </div>
+                      </button>
+                    ))}
+                  </div>
+                ) : (
+                  <div className="text-center py-12 text-muted-foreground">
+                    Aucune séquence prévue pour ce jour
+                  </div>
+                )}
+              </div>
             )}
           </CardContent>
         </Card>
diff --git a/todo.md b/todo.md
index 347a70b..feb1c78 100644
--- a/todo.md
+++ b/todo.md
@@ -602,3 +602,25 @@
 - [x] Identifier la cause de l'erreur lors du survol des vignettes
 - [x] Corriger le code pour résoudre l'erreur
 - [x] Tester le calendrier après correction
+
+## Améliorations du calendrier
+
+### Filtres du calendrier
+- [x] Ajouter un filtre par formation
+- [x] Ajouter un filtre par lieu
+- [x] Ajouter un filtre par public cible
+- [x] Implémenter la logique de filtrage dans la vue calendrier
+- [x] Tester les filtres avec différentes combinaisons
+
+### Vues alternatives du calendrier
+- [x] Créer la vue hebdomadaire
+- [x] Créer la vue journalière
+- [x] Ajouter un sélecteur de vue (mois/semaine/jour)
+- [x] Adapter l'affichage des séquences pour chaque vue
+- [x] Tester la navigation entre les vues
+
+### Export du calendrier
+- [x] Implémenter l'export PDF du calendrier mensuel
+- [x] Implémenter l'export iCal pour partage avec les formateurs
+- [x] Ajouter les boutons d'export dans l'interface
+- [x] Tester les exports avec différents mois