diff --git a/rpc/src/v1/impls/web3.rs b/rpc/src/v1/impls/web3.rs
index 64a82adb9..72651dd4e 100644
--- a/rpc/src/v1/impls/web3.rs
+++ b/rpc/src/v1/impls/web3.rs
@@ -18,6 +18,8 @@
 use jsonrpc_core::*;
 use util::version;
 use v1::traits::Web3;
+use v1::types::Bytes;
+use util::sha3::Hashable;
 
 /// Web3 rpc implementation.
 pub struct Web3Client;
@@ -34,4 +36,15 @@ impl Web3 for Web3Client {
 			_ => Err(Error::invalid_params())
 		}
 	}
+
+	fn sha3(&self, params: Params) -> Result<Value, Error> {
+		from_params::<(Bytes,)>(params).and_then(
+			|(data,)| {
+				let sha3 = data.to_vec().sha3();
+				to_value(&sha3)
+			}
+		)
+
+	}
+
 }
diff --git a/rpc/src/v1/tests/web3.rs b/rpc/src/v1/tests/web3.rs
index c717d361a..af21a932f 100644
--- a/rpc/src/v1/tests/web3.rs
+++ b/rpc/src/v1/tests/web3.rs
@@ -31,3 +31,17 @@ fn rpc_web3_version() {
 
 	assert_eq!(io.handle_request(request), Some(response));
 }
+
+#[test]
+fn rpc_web3_sha3() {
+	let web3 = Web3Client::new().to_delegate();
+	let io = IoHandler::new();
+	io.add_delegate(web3);
+
+	let v = version().to_owned().replace("Parity/", "Parity//");
+
+	let request = r#"{"jsonrpc": "2.0", "method": "web3_sha3", "params": ["0x00"], "id": 1}"#;
+	let response = r#"{"jsonrpc":"2.0","result":"0xbc36789e7a1e281436464229828f817d6612f7b477d66591ff96a9e064bcc98a","id":1}"#;
+
+	assert_eq!(io.handle_request(request), Some(response.to_owned()));
+}
diff --git a/rpc/src/v1/traits/web3.rs b/rpc/src/v1/traits/web3.rs
index bb8653504..c7b21a1a1 100644
--- a/rpc/src/v1/traits/web3.rs
+++ b/rpc/src/v1/traits/web3.rs
@@ -23,10 +23,14 @@ pub trait Web3: Sized + Send + Sync + 'static {
 	/// Returns current client version.
 	fn client_version(&self, _: Params) -> Result<Value, Error> { rpc_unimplemented!() }
 
+	/// Returns sha3 of the given data
+	fn sha3(&self, _: Params) -> Result<Value, Error> { rpc_unimplemented!() }
+
 	/// Should be used to convert object to io delegate.
 	fn to_delegate(self) -> IoDelegate<Self> {
 		let mut delegate = IoDelegate::new(Arc::new(self));
 		delegate.add_method("web3_clientVersion", Web3::client_version);
+		delegate.add_method("web3_sha3", Web3::sha3);
 		delegate
 	}
 }