diff --git a/eth/main.cpp b/eth/main.cpp
index 9cd270a16..e4facccee 100644
--- a/eth/main.cpp
+++ b/eth/main.cpp
@@ -37,6 +37,7 @@
 #include <libevm/VM.h>
 #include <libevm/VMFactory.h>
 #include <libethereum/All.h>
+#include <libethereum/BlockChainSync.h>
 #include <libethcore/KeyManager.h>
 
 #include <libwebthree/WebThree.h>
@@ -375,6 +376,8 @@ void interactiveMode(eth::Client* c, std::shared_ptr<eth::TrivialGasPricer> gasP
 			cout << "Current block: " << c->blockChain().details().number << endl;
 		else if (c && cmd == "blockqueue")
 			cout << "Current blockqueue status: " << endl << c->blockQueueStatus() << endl;
+		else if (c && cmd == "sync")
+			cout << "Current sync status: " << endl << c->syncStatus() << endl;
 		else if (c && cmd == "hashrate")
 			cout << "Current hash rate: " << toString(c->hashrate()) << " hashes per second." << endl;
 		else if (c && cmd == "findblock")
diff --git a/libethereum/BlockChainSync.cpp b/libethereum/BlockChainSync.cpp
index b8c613a54..90dc70574 100644
--- a/libethereum/BlockChainSync.cpp
+++ b/libethereum/BlockChainSync.cpp
@@ -41,6 +41,17 @@ using namespace p2p;
 unsigned const c_chainReorgSize = 30000; /// Added to estimated hashes to account for potential chain reorganiation
 unsigned const c_hashSubchainSize = 8192; /// PV61 subchain size
 
+std::ostream& dev::eth::operator<<(std::ostream& _out, SyncStatus const& _sync)
+{
+	_out << "protocol: " << _sync.protocolVersion << endl;
+	_out << "state: " << EthereumHost::stateName(_sync.state) << " ";
+	if (_sync.state == SyncState::Hashes)
+		_out << _sync.hashesReceived << "/" << (_sync.hashesEstimated ? "~" : "") << _sync.hashesTotal;
+	if (_sync.state == SyncState::Blocks || _sync.state == SyncState::NewBlocks)
+		_out << _sync.blocksReceived << "/" << _sync.blocksTotal;
+	return _out;
+}
+
 BlockChainSync::BlockChainSync(EthereumHost& _host):
 	m_host(_host)
 {
diff --git a/libethereum/BlockChainSync.h b/libethereum/BlockChainSync.h
index 6f1c4306d..4fb7bae2c 100644
--- a/libethereum/BlockChainSync.h
+++ b/libethereum/BlockChainSync.h
@@ -316,5 +316,8 @@ private:
 	unsigned m_syncingBlockNumber = 0;					///< Current subchain marker
 	bool m_hashScanComplete = false;						///< True if leading peer completed hashchain scan and we have a list of subchains ready
 };
+
+std::ostream& operator<<(std::ostream& _out, SyncStatus const& _sync);
+
 }
 }