C# SHA-2 Cryptography: SHA-256, SHA-384, SHA-512

Here are some crypto methods for SHA256, SHA384, and SHA512 which I had not posted about before. This is the class I am using.

using System.Security.Cryptography;
using System.Text;

public class clsCrypto {
    public clsCrypto() {
    }
    public static string md5encrypt(string phrase) {
        UTF8Encoding encoder = new UTF8Encoding();
        MD5CryptoServiceProvider md5hasher = new MD5CryptoServiceProvider();
        byte[] hashedDataBytes = md5hasher.ComputeHash(encoder.GetBytes(phrase));
        return byteArrayToString(hashedDataBytes);
    }
    public static string sha1encrypt(string phrase) {
        UTF8Encoding encoder = new UTF8Encoding();
        SHA1CryptoServiceProvider sha1hasher = new SHA1CryptoServiceProvider();
        byte[] hashedDataBytes = sha1hasher.ComputeHash(encoder.GetBytes(phrase));
        return byteArrayToString(hashedDataBytes);
    }
    public static string sha256encrypt(string phrase) {
        UTF8Encoding encoder = new UTF8Encoding();
        SHA256Managed sha256hasher = new SHA256Managed();
        byte[] hashedDataBytes = sha256hasher.ComputeHash(encoder.GetBytes(phrase));
        return byteArrayToString(hashedDataBytes);
    }
    public static string sha384encrypt(string phrase) {
        UTF8Encoding encoder = new UTF8Encoding();
        SHA384Managed sha384hasher = new SHA384Managed();
        byte[] hashedDataBytes = sha384hasher.ComputeHash(encoder.GetBytes(phrase));
        return byteArrayToString(hashedDataBytes);
    }
    public static string sha512encrypt(string phrase) {
        UTF8Encoding encoder = new UTF8Encoding();
        SHA512Managed sha512hasher = new SHA512Managed();
        byte[] hashedDataBytes = sha512hasher.ComputeHash(encoder.GetBytes(phrase));
        return byteArrayToString(hashedDataBytes);
    }
    public static string byteArrayToString(byte[] inputArray) {
        StringBuilder output = new StringBuilder("");
        for (int i = 0; i < inputArray.Length; i++) {
            output.Append(inputArray[i].ToString("X2"));
        }
        return output.ToString();
    }
}