diff --git a/src/main/java/org/stellar/sdk/xdr/Int128Parts.java b/src/main/java/org/stellar/sdk/xdr/Int128Parts.java
index 90a50fa66..4a77594aa 100644
--- a/src/main/java/org/stellar/sdk/xdr/Int128Parts.java
+++ b/src/main/java/org/stellar/sdk/xdr/Int128Parts.java
@@ -5,6 +5,7 @@
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
+import java.math.BigInteger;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
@@ -46,6 +47,12 @@ public static Int128Parts fromXdrBase64(String xdr) throws IOException {
     return fromXdrByteArray(bytes);
   }
 
+  public BigInteger toBigInteger() {
+    BigInteger hiValue = BigInteger.valueOf(hi.getInt64());
+    BigInteger loValue = lo.getUint64().getNumber();
+    return hiValue.shiftLeft(64).add(loValue);
+  }
+
   public static Int128Parts fromXdrByteArray(byte[] xdr) throws IOException {
     ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(xdr);
     XdrDataInputStream xdrDataInputStream = new XdrDataInputStream(byteArrayInputStream);
diff --git a/src/main/java/org/stellar/sdk/xdr/Int256Parts.java b/src/main/java/org/stellar/sdk/xdr/Int256Parts.java
index c16004932..c4fdbbc40 100644
--- a/src/main/java/org/stellar/sdk/xdr/Int256Parts.java
+++ b/src/main/java/org/stellar/sdk/xdr/Int256Parts.java
@@ -5,6 +5,7 @@
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
+import java.math.BigInteger;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
@@ -54,6 +55,19 @@ public static Int256Parts fromXdrBase64(String xdr) throws IOException {
     return fromXdrByteArray(bytes);
   }
 
+  public BigInteger toBigInteger() {
+    BigInteger hi_hiValue = BigInteger.valueOf(hi_hi.getInt64());
+    BigInteger hi_loValue = hi_lo.getUint64().getNumber();
+    BigInteger lo_hiValue = lo_hi.getUint64().getNumber();
+    BigInteger lo_loValue = lo_lo.getUint64().getNumber();
+
+    return hi_hiValue
+        .shiftLeft(192)
+        .add(hi_loValue.shiftLeft(128))
+        .add(lo_hiValue.shiftLeft(64))
+        .add(lo_loValue);
+  }
+
   public static Int256Parts fromXdrByteArray(byte[] xdr) throws IOException {
     ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(xdr);
     XdrDataInputStream xdrDataInputStream = new XdrDataInputStream(byteArrayInputStream);
diff --git a/src/main/java/org/stellar/sdk/xdr/UInt128Parts.java b/src/main/java/org/stellar/sdk/xdr/UInt128Parts.java
index 1e8e277c0..a03c87107 100644
--- a/src/main/java/org/stellar/sdk/xdr/UInt128Parts.java
+++ b/src/main/java/org/stellar/sdk/xdr/UInt128Parts.java
@@ -5,6 +5,7 @@
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
+import java.math.BigInteger;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
@@ -46,6 +47,12 @@ public static UInt128Parts fromXdrBase64(String xdr) throws IOException {
     return fromXdrByteArray(bytes);
   }
 
+  public BigInteger toBigInteger() {
+    BigInteger hiValue = hi.getUint64().getNumber();
+    BigInteger loValue = lo.getUint64().getNumber();
+    return hiValue.shiftLeft(64).add(loValue);
+  }
+
   public static UInt128Parts fromXdrByteArray(byte[] xdr) throws IOException {
     ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(xdr);
     XdrDataInputStream xdrDataInputStream = new XdrDataInputStream(byteArrayInputStream);
diff --git a/src/main/java/org/stellar/sdk/xdr/UInt256Parts.java b/src/main/java/org/stellar/sdk/xdr/UInt256Parts.java
index c7e7e42b3..37bfab3ad 100644
--- a/src/main/java/org/stellar/sdk/xdr/UInt256Parts.java
+++ b/src/main/java/org/stellar/sdk/xdr/UInt256Parts.java
@@ -5,6 +5,7 @@
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
+import java.math.BigInteger;
 import lombok.AllArgsConstructor;
 import lombok.Builder;
 import lombok.Data;
@@ -49,6 +50,18 @@ public static UInt256Parts decode(XdrDataInputStream stream) throws IOException
     return decodedUInt256Parts;
   }
 
+  public BigInteger toBigInteger() {
+    BigInteger hi_hiValue = hi_hi.getUint64().getNumber();
+    BigInteger hi_loValue = hi_lo.getUint64().getNumber();
+    BigInteger lo_hiValue = lo_hi.getUint64().getNumber();
+    BigInteger lo_loValue = lo_lo.getUint64().getNumber();
+    return hi_hiValue
+        .shiftLeft(192)
+        .add(hi_loValue.shiftLeft(128))
+        .add(lo_hiValue.shiftLeft(64))
+        .add(lo_loValue);
+  }
+
   public static UInt256Parts fromXdrBase64(String xdr) throws IOException {
     byte[] bytes = Base64Factory.getInstance().decode(xdr);
     return fromXdrByteArray(bytes);
diff --git a/src/main/java/org/stellar/sdk/xdr/Uint256.java b/src/main/java/org/stellar/sdk/xdr/Uint256.java
index 13348bd7f..ca60f0577 100644
--- a/src/main/java/org/stellar/sdk/xdr/Uint256.java
+++ b/src/main/java/org/stellar/sdk/xdr/Uint256.java
@@ -5,6 +5,7 @@
 
 import java.io.ByteArrayInputStream;
 import java.io.IOException;
+import java.math.BigInteger;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
@@ -36,6 +37,10 @@ public static Uint256 decode(XdrDataInputStream stream) throws IOException {
     return decodedUint256;
   }
 
+  public BigInteger toBigInteger() {
+    return new BigInteger(1, uint256);
+  }
+
   public static Uint256 fromXdrBase64(String xdr) throws IOException {
     byte[] bytes = Base64Factory.getInstance().decode(xdr);
     return fromXdrByteArray(bytes);