diff --git a/lib/jasmine.js b/lib/jasmine.js
index 785bee46..a1be3be9 100644
--- a/lib/jasmine.js
+++ b/lib/jasmine.js
@@ -1148,6 +1148,16 @@ jasmine.Matchers.prototype.toNotContain = function(item) {
     'Expected ' + jasmine.Matchers.pp(this.actual) + ' not to contain ' + jasmine.Matchers.pp(item) + ', but it does.');
 };
 
+jasmine.Matchers.prototype.toBeLessThan = function(expected) {
+  return this.report(this.actual < expected,
+    'Expected ' + jasmine.Matchers.pp(this.actual) + ' to be less than ' + jasmine.Matchers.pp(expected) + ', but it was not.');
+}
+
+jasmine.Matchers.prototype.toBeGreaterThan = function(expected) {
+  return this.report(this.actual > expected,
+    'Expected ' + jasmine.Matchers.pp(this.actual) + ' to be greater than ' + jasmine.Matchers.pp(expected) + ', but it was not.');
+}
+
 /**
  * Matcher that checks that the expected exception was thrown by the actual.
  *
diff --git a/spec/suites/MatchersTest.js b/spec/suites/MatchersTest.js
index 5a3d18e3..5199ae0e 100644
--- a/spec/suites/MatchersTest.js
+++ b/spec/suites/MatchersTest.js
@@ -167,6 +167,18 @@ describe("jasmine.Matchers", function() {
     });
   });
 
+  it("toBeLessThan should pass if actual is less than expected", function() {
+    expect(match(37).toBeLessThan(42)).toEqual(true);
+    expect(match(37).toBeLessThan(-42)).toEqual(false);
+    expect(match(37).toBeLessThan(37)).toEqual(false);
+  });
+
+  it("toBeGreaterThan should pass if actual is greater than expected", function() {
+    expect(match(37).toBeGreaterThan(42)).toEqual(false);
+    expect(match(37).toBeGreaterThan(-42)).toEqual(true);
+    expect(match(37).toBeGreaterThan(37)).toEqual(false);
+  });
+
   it("toThrow", function() {
     var expected = new jasmine.Matchers(env, function() {
       throw new Error("Fake Error");
diff --git a/src/Matchers.js b/src/Matchers.js
index cb078e83..f69b858a 100644
--- a/src/Matchers.js
+++ b/src/Matchers.js
@@ -216,6 +216,16 @@ jasmine.Matchers.prototype.toNotContain = function(item) {
     'Expected ' + jasmine.Matchers.pp(this.actual) + ' not to contain ' + jasmine.Matchers.pp(item) + ', but it does.');
 };
 
+jasmine.Matchers.prototype.toBeLessThan = function(expected) {
+  return this.report(this.actual < expected,
+    'Expected ' + jasmine.Matchers.pp(this.actual) + ' to be less than ' + jasmine.Matchers.pp(expected) + ', but it was not.');
+}
+
+jasmine.Matchers.prototype.toBeGreaterThan = function(expected) {
+  return this.report(this.actual > expected,
+    'Expected ' + jasmine.Matchers.pp(this.actual) + ' to be greater than ' + jasmine.Matchers.pp(expected) + ', but it was not.');
+}
+
 /**
  * Matcher that checks that the expected exception was thrown by the actual.
  *