diff --git a/ui/status/ninja.go b/ui/status/ninja.go
index 7b25d50aa..1e97908df 100644
--- a/ui/status/ninja.go
+++ b/ui/status/ninja.go
@@ -20,6 +20,7 @@ import (
 	"io"
 	"os"
 	"regexp"
+	"runtime"
 	"strings"
 	"syscall"
 	"time"
@@ -178,7 +179,28 @@ func (n *NinjaReader) run() {
 			// msgChan is closed
 			break
 		}
-		// Ignore msg.BuildStarted
+
+		if msg.BuildStarted != nil {
+			parallelism := uint32(runtime.NumCPU())
+			if msg.BuildStarted.GetParallelism() > 0 {
+				parallelism = msg.BuildStarted.GetParallelism()
+			}
+			// It is estimated from total time / parallelism assumming the build is packing enough.
+			estimatedDurationFromTotal := time.Duration(msg.BuildStarted.GetEstimatedTotalTime()/parallelism) * time.Millisecond
+			// It is estimated from critical path time which is useful for small size build.
+			estimatedDurationFromCriticalPath := time.Duration(msg.BuildStarted.GetCriticalPathTime()) * time.Millisecond
+			// Select the longer one.
+			estimatedDuration := max(estimatedDurationFromTotal, estimatedDurationFromCriticalPath)
+
+			if estimatedDuration > 0 {
+				n.status.SetEstimatedTime(time.Now().Add(estimatedDuration))
+				n.status.Verbose(fmt.Sprintf("parallelism: %d, estimiated from total time: %s, critical path time: %s",
+					parallelism,
+					estimatedDurationFromTotal,
+					estimatedDurationFromCriticalPath))
+
+			}
+		}
 		if msg.TotalEdges != nil {
 			n.status.SetTotalActions(int(msg.TotalEdges.GetTotalEdges()))
 		}
diff --git a/ui/status/ninja_frontend/frontend.pb.go b/ui/status/ninja_frontend/frontend.pb.go
index d0c49533a..d8344c8a9 100644
--- a/ui/status/ninja_frontend/frontend.pb.go
+++ b/ui/status/ninja_frontend/frontend.pb.go
@@ -14,7 +14,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
+// 	protoc-gen-go v1.30.0
 // 	protoc        v3.21.12
 // source: frontend.proto
 
@@ -240,6 +240,10 @@ type Status_BuildStarted struct {
 	Parallelism *uint32 `protobuf:"varint,1,opt,name=parallelism" json:"parallelism,omitempty"`
 	// Verbose value passed to ninja.
 	Verbose *bool `protobuf:"varint,2,opt,name=verbose" json:"verbose,omitempty"`
+	// Critical path's running time in milliseconds
+	CriticalPathTime *uint32 `protobuf:"varint,3,opt,name=critical_path_time,json=criticalPathTime" json:"critical_path_time,omitempty"`
+	// Total running time of every need-to-build edge in milliseconds
+	EstimatedTotalTime *uint32 `protobuf:"varint,4,opt,name=estimated_total_time,json=estimatedTotalTime" json:"estimated_total_time,omitempty"`
 }
 
 func (x *Status_BuildStarted) Reset() {
@@ -288,6 +292,20 @@ func (x *Status_BuildStarted) GetVerbose() bool {
 	return false
 }
 
+func (x *Status_BuildStarted) GetCriticalPathTime() uint32 {
+	if x != nil && x.CriticalPathTime != nil {
+		return *x.CriticalPathTime
+	}
+	return 0
+}
+
+func (x *Status_BuildStarted) GetEstimatedTotalTime() uint32 {
+	if x != nil && x.EstimatedTotalTime != nil {
+		return *x.EstimatedTotalTime
+	}
+	return 0
+}
+
 type Status_BuildFinished struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -660,7 +678,7 @@ var File_frontend_proto protoreflect.FileDescriptor
 
 var file_frontend_proto_rawDesc = []byte{
 	0x0a, 0x0e, 0x66, 0x72, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x64, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f,
-	0x12, 0x05, 0x6e, 0x69, 0x6e, 0x6a, 0x61, 0x22, 0xc8, 0x0a, 0x0a, 0x06, 0x53, 0x74, 0x61, 0x74,
+	0x12, 0x05, 0x6e, 0x69, 0x6e, 0x6a, 0x61, 0x22, 0xa9, 0x0b, 0x0a, 0x06, 0x53, 0x74, 0x61, 0x74,
 	0x75, 0x73, 0x12, 0x39, 0x0a, 0x0b, 0x74, 0x6f, 0x74, 0x61, 0x6c, 0x5f, 0x65, 0x64, 0x67, 0x65,
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@@ -687,67 +705,73 @@ var file_frontend_proto_rawDesc = []byte{
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 }
 
 var (
diff --git a/ui/status/ninja_frontend/frontend.proto b/ui/status/ninja_frontend/frontend.proto
index 6cb4a0d02..42b251ba5 100644
--- a/ui/status/ninja_frontend/frontend.proto
+++ b/ui/status/ninja_frontend/frontend.proto
@@ -30,6 +30,10 @@ message Status {
     optional uint32 parallelism = 1;
     // Verbose value passed to ninja.
     optional bool verbose = 2;
+    // Critical path's running time in milliseconds
+    optional uint32 critical_path_time = 3;
+    // Total running time of every need-to-build edge in milliseconds
+    optional uint32 estimated_total_time = 4;
   }
 
   message BuildFinished {
diff --git a/ui/status/status.go b/ui/status/status.go
index f3e58b660..da78994ef 100644
--- a/ui/status/status.go
+++ b/ui/status/status.go
@@ -19,6 +19,7 @@ package status
 
 import (
 	"sync"
+	"time"
 )
 
 // Action describes an action taken (or as Ninja calls them, Edges).
@@ -107,6 +108,8 @@ type Counts struct {
 	// FinishedActions are the number of actions that have been finished
 	// with FinishAction.
 	FinishedActions int
+
+	EstimatedTime time.Time
 }
 
 // ToolStatus is the interface used by tools to report on their Actions, and to
@@ -118,6 +121,7 @@ type ToolStatus interface {
 	// This call be will ignored if it sets a number that is less than the
 	// current number of started actions.
 	SetTotalActions(total int)
+	SetEstimatedTime(estimatedTime time.Time)
 
 	// StartAction specifies that the associated action has been started by
 	// the tool.
@@ -267,6 +271,13 @@ func (s *Status) updateTotalActions(diff int) {
 	s.counts.TotalActions += diff
 }
 
+func (s *Status) SetEstimatedTime(estimatedTime time.Time) {
+	s.lock.Lock()
+	defer s.lock.Unlock()
+
+	s.counts.EstimatedTime = estimatedTime
+}
+
 func (s *Status) startAction(action *Action) {
 	s.lock.Lock()
 	defer s.lock.Unlock()
@@ -329,6 +340,10 @@ func (d *toolStatus) SetTotalActions(total int) {
 	}
 }
 
+func (d *toolStatus) SetEstimatedTime(estimatedTime time.Time) {
+	d.status.SetEstimatedTime(estimatedTime)
+}
+
 func (d *toolStatus) StartAction(action *Action) {
 	totalDiff := 0
 
diff --git a/ui/terminal/format.go b/ui/terminal/format.go
index 4205bdc22..241a1ddf7 100644
--- a/ui/terminal/format.go
+++ b/ui/terminal/format.go
@@ -51,9 +51,22 @@ func (s formatter) message(level status.MsgLevel, message string) string {
 	return ""
 }
 
+func remainingTimeString(t time.Time) string {
+	now := time.Now()
+	if t.After(now) {
+		return t.Sub(now).Round(time.Duration(time.Second)).String()
+	}
+	return time.Duration(0).Round(time.Duration(time.Second)).String()
+}
 func (s formatter) progress(counts status.Counts) string {
 	if s.format == "" {
-		return fmt.Sprintf("[%3d%% %d/%d] ", 100*counts.FinishedActions/counts.TotalActions, counts.FinishedActions, counts.TotalActions)
+		output := fmt.Sprintf("[%3d%% %d/%d", 100*counts.FinishedActions/counts.TotalActions, counts.FinishedActions, counts.TotalActions)
+
+		if !counts.EstimatedTime.IsZero() {
+			output += fmt.Sprintf(" %s remaining", remainingTimeString(counts.EstimatedTime))
+		}
+		output += "] "
+		return output
 	}
 
 	buf := &strings.Builder{}
@@ -93,6 +106,13 @@ func (s formatter) progress(counts status.Counts) string {
 			fmt.Fprintf(buf, "%3d%%", 100*counts.FinishedActions/counts.TotalActions)
 		case 'e':
 			fmt.Fprintf(buf, "%.3f", time.Since(s.start).Seconds())
+		case 'l':
+			if counts.EstimatedTime.IsZero() {
+				// No esitimated data
+				buf.WriteRune('?')
+			} else {
+				fmt.Fprintf(buf, "%s", remainingTimeString(counts.EstimatedTime))
+			}
 		default:
 			buf.WriteString("unknown placeholder '")
 			buf.WriteByte(c)
diff --git a/ui/terminal/smart_status.go b/ui/terminal/smart_status.go
index 3880b04a8..4575ccfdd 100644
--- a/ui/terminal/smart_status.go
+++ b/ui/terminal/smart_status.go
@@ -31,8 +31,9 @@ import (
 const tableHeightEnVar = "SOONG_UI_TABLE_HEIGHT"
 
 type actionTableEntry struct {
-	action    *status.Action
-	startTime time.Time
+	action           *status.Action
+	startTime        time.Time
+	estimatedEndTime time.Time
 }
 
 type smartStatusOutput struct {