diff --git a/esphome/components/uptime/text_sensor/__init__.py b/esphome/components/uptime/text_sensor/__init__.py
index e4a7ac6517..6b91b526c0 100644
--- a/esphome/components/uptime/text_sensor/__init__.py
+++ b/esphome/components/uptime/text_sensor/__init__.py
@@ -1,19 +1,59 @@
 import esphome.codegen as cg
 from esphome.components import text_sensor
 import esphome.config_validation as cv
-from esphome.const import ENTITY_CATEGORY_DIAGNOSTIC, ICON_TIMER
+from esphome.const import (
+    CONF_FORMAT,
+    CONF_HOURS,
+    CONF_ID,
+    CONF_MINUTES,
+    CONF_SECONDS,
+    ENTITY_CATEGORY_DIAGNOSTIC,
+    ICON_TIMER,
+)
 
 uptime_ns = cg.esphome_ns.namespace("uptime")
 UptimeTextSensor = uptime_ns.class_(
     "UptimeTextSensor", text_sensor.TextSensor, cg.PollingComponent
 )
-CONFIG_SCHEMA = text_sensor.text_sensor_schema(
-    UptimeTextSensor,
-    icon=ICON_TIMER,
-    entity_category=ENTITY_CATEGORY_DIAGNOSTIC,
-).extend(cv.polling_component_schema("30s"))
+
+CONF_SEPARATOR = "separator"
+CONF_DAYS = "days"
+CONF_EXPAND = "expand"
+
+CONFIG_SCHEMA = (
+    text_sensor.text_sensor_schema(
+        UptimeTextSensor,
+        icon=ICON_TIMER,
+        entity_category=ENTITY_CATEGORY_DIAGNOSTIC,
+    )
+    .extend(
+        {
+            cv.Optional(CONF_FORMAT, default={}): cv.Schema(
+                {
+                    cv.Optional(CONF_DAYS, default="d"): cv.string_strict,
+                    cv.Optional(CONF_HOURS, default="h"): cv.string_strict,
+                    cv.Optional(CONF_MINUTES, default="m"): cv.string_strict,
+                    cv.Optional(CONF_SECONDS, default="s"): cv.string_strict,
+                    cv.Optional(CONF_SEPARATOR, default=""): cv.string_strict,
+                    cv.Optional(CONF_EXPAND, default=False): cv.boolean,
+                }
+            )
+        }
+    )
+    .extend(cv.polling_component_schema("30s"))
+)
 
 
 async def to_code(config):
-    var = await text_sensor.new_text_sensor(config)
+    format = config[CONF_FORMAT]
+    var = cg.new_Pvariable(
+        config[CONF_ID],
+        format[CONF_DAYS],
+        format[CONF_HOURS],
+        format[CONF_MINUTES],
+        format[CONF_SECONDS],
+        format[CONF_SEPARATOR],
+        format[CONF_EXPAND],
+    )
+    await text_sensor.register_text_sensor(var, config)
     await cg.register_component(var, config)
diff --git a/esphome/components/uptime/text_sensor/uptime_text_sensor.cpp b/esphome/components/uptime/text_sensor/uptime_text_sensor.cpp
index 409af6e4ff..94585379fe 100644
--- a/esphome/components/uptime/text_sensor/uptime_text_sensor.cpp
+++ b/esphome/components/uptime/text_sensor/uptime_text_sensor.cpp
@@ -16,6 +16,11 @@ void UptimeTextSensor::setup() {
   this->update();
 }
 
+void UptimeTextSensor::insert_buffer_(std::string &buffer, const char *key, unsigned value) const {
+  buffer.insert(0, this->separator_);
+  buffer.insert(0, str_sprintf("%u%s", value, key));
+}
+
 void UptimeTextSensor::update() {
   auto now = millis();
   // get whole seconds since last update. Note that even if the millis count has overflowed between updates,
@@ -32,25 +37,25 @@ void UptimeTextSensor::update() {
     unsigned remainder = uptime % 60;
     uptime /= 60;
     if (interval < 30) {
-      buffer.insert(0, str_sprintf("%us", remainder));
-      if (uptime == 0)
+      this->insert_buffer_(buffer, this->seconds_text_, remainder);
+      if (!this->expand_ && uptime == 0)
         break;
     }
     remainder = uptime % 60;
     uptime /= 60;
     if (interval < 1800) {
-      buffer.insert(0, str_sprintf("%um", remainder));
-      if (uptime == 0)
+      this->insert_buffer_(buffer, this->minutes_text_, remainder);
+      if (!this->expand_ && uptime == 0)
         break;
     }
     remainder = uptime % 24;
     uptime /= 24;
     if (interval < 12 * 3600) {
-      buffer.insert(0, str_sprintf("%uh", remainder));
-      if (uptime == 0)
+      this->insert_buffer_(buffer, this->hours_text_, remainder);
+      if (!this->expand_ && uptime == 0)
         break;
     }
-    buffer.insert(0, str_sprintf("%ud", (unsigned) uptime));
+    this->insert_buffer_(buffer, this->days_text_, (unsigned) uptime);
     break;
   }
   this->publish_state(buffer);
diff --git a/esphome/components/uptime/text_sensor/uptime_text_sensor.h b/esphome/components/uptime/text_sensor/uptime_text_sensor.h
index 5719ef38a2..8dd058998c 100644
--- a/esphome/components/uptime/text_sensor/uptime_text_sensor.h
+++ b/esphome/components/uptime/text_sensor/uptime_text_sensor.h
@@ -10,13 +10,32 @@ namespace uptime {
 
 class UptimeTextSensor : public text_sensor::TextSensor, public PollingComponent {
  public:
+  UptimeTextSensor(const char *days_text, const char *hours_text, const char *minutes_text, const char *seconds_text,
+                   const char *separator, bool expand)
+      : days_text_(days_text),
+        hours_text_(hours_text),
+        minutes_text_(minutes_text),
+        seconds_text_(seconds_text),
+        separator_(separator),
+        expand_(expand) {}
   void update() override;
   void dump_config() override;
   void setup() override;
 
   float get_setup_priority() const override;
+  void set_days(const char *days_text) { this->days_text_ = days_text; }
+  void set_hours(const char *hours_text) { this->hours_text_ = hours_text; }
+  void set_minutes(const char *minutes_text) { this->minutes_text_ = minutes_text; }
+  void set_seconds(const char *seconds_text) { this->seconds_text_ = seconds_text; }
 
  protected:
+  void insert_buffer_(std::string &buffer, const char *key, unsigned value) const;
+  const char *days_text_;
+  const char *hours_text_;
+  const char *minutes_text_;
+  const char *seconds_text_;
+  const char *separator_;
+  bool expand_{};
   uint32_t uptime_{0};  // uptime in seconds, will overflow after 136 years
   uint32_t last_ms_{0};
 };
diff --git a/tests/components/uptime/common.yaml b/tests/components/uptime/common.yaml
index d78ef8eca9..86b764e7ff 100644
--- a/tests/components/uptime/common.yaml
+++ b/tests/components/uptime/common.yaml
@@ -17,3 +17,13 @@ sensor:
 text_sensor:
   - platform: uptime
     name: Uptime Text
+  - platform: uptime
+    name: Uptime Text With Separator
+    format:
+      separator: "-"
+      expand: true
+      days: "Days"
+      hours: "H"
+      minutes: "M"
+      seconds: "S"
+    update_interval: 10s