diff --git a/lighthouse-cli/test/smokehouse/test-definitions/perf/expectations.js b/lighthouse-cli/test/smokehouse/test-definitions/perf/expectations.js
index b1198ad635fe..f516118b7e97 100644
--- a/lighthouse-cli/test/smokehouse/test-definitions/perf/expectations.js
+++ b/lighthouse-cli/test/smokehouse/test-definitions/perf/expectations.js
@@ -330,7 +330,7 @@ module.exports = [
                 largestContentfulPaintAllFrames: '<5000',
                 cumulativeLayoutShift: '0.197 +/- 0.001',
                 cumulativeLayoutShiftMainFrame: '0.001 +/- 0.0005',
-                oldCumulativeLayoutShift: '0.001 +/- 0.0005',
+                totalCumulativeLayoutShift: '0.001 +/- 0.0005',
               },
               {
                 lcpInvalidated: false,
diff --git a/lighthouse-core/audits/metrics.js b/lighthouse-core/audits/metrics.js
index aa3f5976e0dc..2afb9c845bb3 100644
--- a/lighthouse-core/audits/metrics.js
+++ b/lighthouse-core/audits/metrics.js
@@ -12,10 +12,10 @@ const ComputedTimingSummary = require('../computed/metrics/timing-summary.js');
 const DECIMAL_METRIC_KEYS = new Set([
   'cumulativeLayoutShift',
   'cumulativeLayoutShiftMainFrame',
-  'oldCumulativeLayoutShift',
+  'totalCumulativeLayoutShift',
   'observedCumulativeLayoutShift',
   'observedCumulativeLayoutShiftMainFrame',
-  'observedOldCumulativeLayoutShift',
+  'observedTotalCumulativeLayoutShift',
 ]);
 
 class Metrics extends Audit {
diff --git a/lighthouse-core/computed/metrics/cumulative-layout-shift.js b/lighthouse-core/computed/metrics/cumulative-layout-shift.js
index fc40a06f72c9..110652d24a18 100644
--- a/lighthouse-core/computed/metrics/cumulative-layout-shift.js
+++ b/lighthouse-core/computed/metrics/cumulative-layout-shift.js
@@ -94,19 +94,18 @@ class CumulativeLayoutShift {
   }
 
   /**
-   * Calculates the original Cumulative Layout Shift metric, summing main-frame
-   * layout-shift events from the entire trace.
+   * Sum all layout shift events from the entire trace.
    * @param {Array<LayoutShiftEvent>} layoutShiftEvents
    * @return {number}
    */
-  static calculateOldCumulativeLayoutShift(layoutShiftEvents) {
+  static calculateTotalCumulativeLayoutShift(layoutShiftEvents) {
     return layoutShiftEvents.reduce((sum, e) => sum += e.weightedScore, 0);
   }
 
   /**
    * @param {LH.Trace} trace
    * @param {LH.Artifacts.ComputedContext} context
-   * @return {Promise<{cumulativeLayoutShift: number, cumulativeLayoutShiftMainFrame: number, oldCumulativeLayoutShift: number}>}
+   * @return {Promise<{cumulativeLayoutShift: number, cumulativeLayoutShiftMainFrame: number, totalCumulativeLayoutShift: number}>}
    */
   static async compute_(trace, context) {
     const traceOfTab = await TraceOfTab.request(trace, context);
@@ -115,14 +114,14 @@ class CumulativeLayoutShift {
         CumulativeLayoutShift.getLayoutShiftEvents(traceOfTab.frameTreeEvents);
     const mainFrameShiftEvents = allFrameShiftEvents.filter(e => e.isMainFrame);
 
-    // The original Cumulative Layout Shift metric, the sum of main-frame shift events from the entire trace.
-    const oldCumulativeLayoutShift = mainFrameShiftEvents
-        .reduce((sum, e) => sum += e.weightedScore, 0);
+    // The original Cumulative Layout Shift metric, the sum of all main-frame shift events.
+    const totalCumulativeLayoutShift =
+        CumulativeLayoutShift.calculateTotalCumulativeLayoutShift(mainFrameShiftEvents);
 
     return {
       cumulativeLayoutShift: CumulativeLayoutShift.calculate(allFrameShiftEvents),
       cumulativeLayoutShiftMainFrame: CumulativeLayoutShift.calculate(mainFrameShiftEvents),
-      oldCumulativeLayoutShift,
+      totalCumulativeLayoutShift,
     };
   }
 }
diff --git a/lighthouse-core/computed/metrics/timing-summary.js b/lighthouse-core/computed/metrics/timing-summary.js
index 23729cdfb1b7..10b46ab257b1 100644
--- a/lighthouse-core/computed/metrics/timing-summary.js
+++ b/lighthouse-core/computed/metrics/timing-summary.js
@@ -60,7 +60,7 @@ class TimingSummary {
     const {
       cumulativeLayoutShift,
       cumulativeLayoutShiftMainFrame,
-      oldCumulativeLayoutShift,
+      totalCumulativeLayoutShift,
     } = cumulativeLayoutShiftValues || {};
 
     /** @type {LH.Artifacts.TimingSummary} */
@@ -88,7 +88,7 @@ class TimingSummary {
       maxPotentialFID: maxPotentialFID && maxPotentialFID.timing,
       cumulativeLayoutShift,
       cumulativeLayoutShiftMainFrame,
-      oldCumulativeLayoutShift,
+      totalCumulativeLayoutShift,
 
       // Include all timestamps of interest from trace of tab
       observedTimeOrigin: traceOfTab.timings.timeOrigin,
@@ -117,7 +117,7 @@ class TimingSummary {
       observedDomContentLoadedTs: traceOfTab.timestamps.domContentLoaded,
       observedCumulativeLayoutShift: cumulativeLayoutShift,
       observedCumulativeLayoutShiftMainFrame: cumulativeLayoutShiftMainFrame,
-      observedOldCumulativeLayoutShift: oldCumulativeLayoutShift,
+      observedTotalCumulativeLayoutShift: totalCumulativeLayoutShift,
 
       // Include some visual metrics from speedline
       observedFirstVisualChange: speedline.first,
diff --git a/lighthouse-core/test/audits/__snapshots__/metrics-test.js.snap b/lighthouse-core/test/audits/__snapshots__/metrics-test.js.snap
index c0c3f88688ad..486a3afbd2e1 100644
--- a/lighthouse-core/test/audits/__snapshots__/metrics-test.js.snap
+++ b/lighthouse-core/test/audits/__snapshots__/metrics-test.js.snap
@@ -45,17 +45,17 @@ Object {
   "observedLoadTs": 23466696096,
   "observedNavigationStart": 0,
   "observedNavigationStartTs": 23466023130,
-  "observedOldCumulativeLayoutShift": undefined,
   "observedSpeedIndex": 1583,
   "observedSpeedIndexTs": 23467605703,
   "observedTimeOrigin": 0,
   "observedTimeOriginTs": 23466023130,
+  "observedTotalCumulativeLayoutShift": undefined,
   "observedTraceEnd": 6006,
   "observedTraceEndTs": 23472029453,
-  "oldCumulativeLayoutShift": undefined,
   "speedIndex": 1583,
   "speedIndexTs": 23467606130,
   "totalBlockingTime": 0,
+  "totalCumulativeLayoutShift": undefined,
 }
 `;
 
@@ -104,17 +104,17 @@ Object {
   "observedLoadTs": 713039182071,
   "observedNavigationStart": 0,
   "observedNavigationStartTs": 713037023064,
-  "observedOldCumulativeLayoutShift": 0,
   "observedSpeedIndex": 1393,
   "observedSpeedIndexTs": 713038416494,
   "observedTimeOrigin": 0,
   "observedTimeOriginTs": 713037023064,
+  "observedTotalCumulativeLayoutShift": 0,
   "observedTraceEnd": 7416,
   "observedTraceEndTs": 713044439102,
-  "oldCumulativeLayoutShift": 0,
   "speedIndex": 3681,
   "speedIndexTs": undefined,
   "totalBlockingTime": 1205,
+  "totalCumulativeLayoutShift": 0,
 }
 `;
 
@@ -163,17 +163,17 @@ Object {
   "observedLoadTs": 225416370913,
   "observedNavigationStart": 0,
   "observedNavigationStartTs": 225414172015,
-  "observedOldCumulativeLayoutShift": 0,
   "observedSpeedIndex": 605,
   "observedSpeedIndexTs": 225414776724,
   "observedTimeOrigin": 0,
   "observedTimeOriginTs": 225414172015,
+  "observedTotalCumulativeLayoutShift": 0,
   "observedTraceEnd": 12540,
   "observedTraceEndTs": 225426711887,
-  "oldCumulativeLayoutShift": 0,
   "speedIndex": 605,
   "speedIndexTs": 225414777015,
   "totalBlockingTime": 48,
+  "totalCumulativeLayoutShift": 0,
 }
 `;
 
@@ -222,16 +222,16 @@ Object {
   "observedLoadTs": 225416370913,
   "observedNavigationStart": 0,
   "observedNavigationStartTs": 225414172015,
-  "observedOldCumulativeLayoutShift": 0,
   "observedSpeedIndex": 605,
   "observedSpeedIndexTs": 225414776724,
   "observedTimeOrigin": 0,
   "observedTimeOriginTs": 225414172015,
+  "observedTotalCumulativeLayoutShift": 0,
   "observedTraceEnd": 12540,
   "observedTraceEndTs": 225426711887,
-  "oldCumulativeLayoutShift": 0,
   "speedIndex": 1676,
   "speedIndexTs": undefined,
   "totalBlockingTime": 777,
+  "totalCumulativeLayoutShift": 0,
 }
 `;
diff --git a/lighthouse-core/test/audits/metrics-test.js b/lighthouse-core/test/audits/metrics-test.js
index a204257fb422..93f8f3f7e743 100644
--- a/lighthouse-core/test/audits/metrics-test.js
+++ b/lighthouse-core/test/audits/metrics-test.js
@@ -101,10 +101,10 @@ describe('Performance: metrics', () => {
     expect(details.items[0]).toMatchObject({
       cumulativeLayoutShift: undefined,
       cumulativeLayoutShiftMainFrame: undefined,
-      oldCumulativeLayoutShift: undefined,
+      totalCumulativeLayoutShift: undefined,
       observedCumulativeLayoutShift: undefined,
       observedCumulativeLayoutShiftMainFrame: undefined,
-      observedOldCumulativeLayoutShift: undefined,
+      observedTotalCumulativeLayoutShift: undefined,
     });
   });
 
@@ -125,11 +125,11 @@ describe('Performance: metrics', () => {
     expect(details.items[0]).toMatchObject({
       cumulativeLayoutShift: expect.toBeApproximately(0.026463, 6),
       cumulativeLayoutShiftMainFrame: expect.toBeApproximately(0.001166, 6),
-      oldCumulativeLayoutShift: expect.toBeApproximately(0.001166, 6),
+      totalCumulativeLayoutShift: expect.toBeApproximately(0.001166, 6),
 
       observedCumulativeLayoutShift: expect.toBeApproximately(0.026463, 6),
       observedCumulativeLayoutShiftMainFrame: expect.toBeApproximately(0.001166, 6),
-      observedOldCumulativeLayoutShift: expect.toBeApproximately(0.001166, 6),
+      observedTotalCumulativeLayoutShift: expect.toBeApproximately(0.001166, 6),
     });
   });
 
@@ -165,11 +165,11 @@ describe('Performance: metrics', () => {
     expect(details.items[0]).toMatchObject({
       cumulativeLayoutShift: expect.toBeApproximately(2.268816, 6),
       cumulativeLayoutShiftMainFrame: expect.toBeApproximately(2.268816, 6),
-      oldCumulativeLayoutShift: expect.toBeApproximately(4.809794, 6),
+      totalCumulativeLayoutShift: expect.toBeApproximately(4.809794, 6),
 
       observedCumulativeLayoutShift: expect.toBeApproximately(2.268816, 6),
       observedCumulativeLayoutShiftMainFrame: expect.toBeApproximately(2.268816, 6),
-      observedOldCumulativeLayoutShift: expect.toBeApproximately(4.809794, 6),
+      observedTotalCumulativeLayoutShift: expect.toBeApproximately(4.809794, 6),
     });
   });
 });
diff --git a/lighthouse-core/test/audits/metrics/cumulative-layout-shift-test.js b/lighthouse-core/test/audits/metrics/cumulative-layout-shift-test.js
index 80662bf160d2..67875589a6c7 100644
--- a/lighthouse-core/test/audits/metrics/cumulative-layout-shift-test.js
+++ b/lighthouse-core/test/audits/metrics/cumulative-layout-shift-test.js
@@ -32,7 +32,7 @@ describe('Cumulative Layout Shift', () => {
         type: 'debugdata',
         items: [{
           cumulativeLayoutShiftMainFrame: expect.toBeApproximately(2.268816, 6),
-          oldCumulativeLayoutShift: expect.toBeApproximately(4.809794, 6),
+          totalCumulativeLayoutShift: expect.toBeApproximately(4.809794, 6),
         }],
       },
     });
diff --git a/lighthouse-core/test/computed/metrics/cumulative-layout-shift-test.js b/lighthouse-core/test/computed/metrics/cumulative-layout-shift-test.js
index 33ef07874c78..4ac4835a489d 100644
--- a/lighthouse-core/test/computed/metrics/cumulative-layout-shift-test.js
+++ b/lighthouse-core/test/computed/metrics/cumulative-layout-shift-test.js
@@ -27,7 +27,7 @@ describe('Metrics: CLS', () => {
       expect(result).toEqual({
         cumulativeLayoutShift: expect.toBeApproximately(2.268816, 6),
         cumulativeLayoutShiftMainFrame: expect.toBeApproximately(2.268816, 6),
-        oldCumulativeLayoutShift: expect.toBeApproximately(4.809794, 6),
+        totalCumulativeLayoutShift: expect.toBeApproximately(4.809794, 6),
       });
     });
 
@@ -41,7 +41,7 @@ describe('Metrics: CLS', () => {
       expect(result).toEqual({
         cumulativeLayoutShift: 0.026463014612806653,
         cumulativeLayoutShiftMainFrame: 0.0011656245471340055,
-        oldCumulativeLayoutShift: 0.0011656245471340055,
+        totalCumulativeLayoutShift: 0.0011656245471340055,
       });
     });
 
@@ -50,7 +50,7 @@ describe('Metrics: CLS', () => {
       expect(result).toEqual({
         cumulativeLayoutShift: 0,
         cumulativeLayoutShiftMainFrame: 0,
-        oldCumulativeLayoutShift: 0,
+        totalCumulativeLayoutShift: 0,
       });
     });
   });
@@ -124,7 +124,7 @@ describe('Metrics: CLS', () => {
         expect(result).toEqual({
           cumulativeLayoutShift: 4,
           cumulativeLayoutShiftMainFrame: 4,
-          oldCumulativeLayoutShift: 4,
+          totalCumulativeLayoutShift: 4,
         });
       });
 
@@ -141,7 +141,7 @@ describe('Metrics: CLS', () => {
         expect(result).toEqual({
           cumulativeLayoutShift: 3,
           cumulativeLayoutShiftMainFrame: 3,
-          oldCumulativeLayoutShift: 3,
+          totalCumulativeLayoutShift: 3,
         });
       });
 
@@ -159,7 +159,7 @@ describe('Metrics: CLS', () => {
         expect(result).toEqual({
           cumulativeLayoutShift: 0.75,
           cumulativeLayoutShiftMainFrame: 0.75,
-          oldCumulativeLayoutShift: 3.75, // 30 * 0.125
+          totalCumulativeLayoutShift: 3.75, // 30 * 0.125
         });
       });
 
@@ -184,7 +184,7 @@ describe('Metrics: CLS', () => {
         expect(result).toEqual({
           cumulativeLayoutShift: 1.0625,
           cumulativeLayoutShiftMainFrame: 1.0625,
-          oldCumulativeLayoutShift: 1.375,
+          totalCumulativeLayoutShift: 1.375,
         });
       });
 
@@ -202,7 +202,7 @@ describe('Metrics: CLS', () => {
         expect(result).toEqual({
           cumulativeLayoutShift: 3.75, // 30 * 0.125
           cumulativeLayoutShiftMainFrame: 3.75,
-          oldCumulativeLayoutShift: 3.75,
+          totalCumulativeLayoutShift: 3.75,
         });
       });
 
@@ -226,7 +226,7 @@ describe('Metrics: CLS', () => {
         expect(result).toEqual({
           cumulativeLayoutShift: 5,
           cumulativeLayoutShiftMainFrame: 5,
-          oldCumulativeLayoutShift: 5,
+          totalCumulativeLayoutShift: 5,
         });
       });
     });
@@ -247,7 +247,7 @@ describe('Metrics: CLS', () => {
         expect(result).toEqual({
           cumulativeLayoutShift: 0.75, // Same value as single-frame uniformly distributed.
           cumulativeLayoutShiftMainFrame: 0.125, // All 1s gaps, so only one event per cluster.
-          oldCumulativeLayoutShift: 1.875, // 0.125 * 15
+          totalCumulativeLayoutShift: 1.875, // 0.125 * 15
         });
       });
 
@@ -276,7 +276,7 @@ describe('Metrics: CLS', () => {
         expect(result).toMatchObject({
           cumulativeLayoutShift: 6,
           cumulativeLayoutShiftMainFrame: 3,
-          oldCumulativeLayoutShift: 3,
+          totalCumulativeLayoutShift: 3,
         });
       });
 
@@ -292,7 +292,7 @@ describe('Metrics: CLS', () => {
         expect(result).toMatchObject({
           cumulativeLayoutShift: 4,
           cumulativeLayoutShiftMainFrame: 2,
-          oldCumulativeLayoutShift: 2,
+          totalCumulativeLayoutShift: 2,
         });
       });
 
@@ -322,7 +322,7 @@ describe('Metrics: CLS', () => {
         expect(result).toMatchObject({
           cumulativeLayoutShift: 3,
           cumulativeLayoutShiftMainFrame: 1,
-          oldCumulativeLayoutShift: 1,
+          totalCumulativeLayoutShift: 1,
         });
       });
     });
@@ -342,7 +342,7 @@ describe('Metrics: CLS', () => {
         expect(result).toMatchObject({
           cumulativeLayoutShift: 6,
           cumulativeLayoutShiftMainFrame: 6,
-          oldCumulativeLayoutShift: 6,
+          totalCumulativeLayoutShift: 6,
         });
       });
 
@@ -361,7 +361,7 @@ describe('Metrics: CLS', () => {
         expect(result).toMatchObject({
           cumulativeLayoutShift: 6,
           cumulativeLayoutShiftMainFrame: 1,
-          oldCumulativeLayoutShift: 4,
+          totalCumulativeLayoutShift: 4,
         });
       });
 
@@ -375,7 +375,7 @@ describe('Metrics: CLS', () => {
         expect(result).toMatchObject({
           cumulativeLayoutShift: 2,
           cumulativeLayoutShiftMainFrame: 2,
-          oldCumulativeLayoutShift: 2,
+          totalCumulativeLayoutShift: 2,
         });
       });
 
@@ -389,7 +389,7 @@ describe('Metrics: CLS', () => {
         expect(result).toMatchObject({
           cumulativeLayoutShift: 2,
           cumulativeLayoutShiftMainFrame: 1,
-          oldCumulativeLayoutShift: 1,
+          totalCumulativeLayoutShift: 1,
         });
       });
     });
diff --git a/lighthouse-core/test/computed/metrics/timing-summary-test.js b/lighthouse-core/test/computed/metrics/timing-summary-test.js
index 99e213ed0bd0..d77c0b945ab4 100644
--- a/lighthouse-core/test/computed/metrics/timing-summary-test.js
+++ b/lighthouse-core/test/computed/metrics/timing-summary-test.js
@@ -62,17 +62,17 @@ describe('Timing summary', () => {
         "observedLoadTs": 10327876093,
         "observedNavigationStart": 0,
         "observedNavigationStartTs": 10327187909,
-        "observedOldCumulativeLayoutShift": 0.0011656245471340055,
         "observedSpeedIndex": 1334.5801200005412,
         "observedSpeedIndexTs": 10328522489.12,
         "observedTimeOrigin": 0,
         "observedTimeOriginTs": 10327187909,
+        "observedTotalCumulativeLayoutShift": 0.0011656245471340055,
         "observedTraceEnd": 14214.313,
         "observedTraceEndTs": 10341402222,
-        "oldCumulativeLayoutShift": 0.0011656245471340055,
         "speedIndex": 1335,
         "speedIndexTs": 10328522909,
         "totalBlockingTime": 2.7429999999994834,
+        "totalCumulativeLayoutShift": 0.0011656245471340055,
       }
     `);
     // Includes performance metrics
diff --git a/lighthouse-core/test/results/sample_v2.json b/lighthouse-core/test/results/sample_v2.json
index 2073624082bf..d717ac5d23e8 100644
--- a/lighthouse-core/test/results/sample_v2.json
+++ b/lighthouse-core/test/results/sample_v2.json
@@ -225,7 +225,7 @@
         "items": [
           {
             "cumulativeLayoutShiftMainFrame": 0.42,
-            "oldCumulativeLayoutShift": 0.42
+            "totalCumulativeLayoutShift": 0.42
           }
         ]
       }
@@ -1474,7 +1474,7 @@
             "maxPotentialFID": 123,
             "cumulativeLayoutShift": 0.42,
             "cumulativeLayoutShiftMainFrame": 0.42,
-            "oldCumulativeLayoutShift": 0.42,
+            "totalCumulativeLayoutShift": 0.42,
             "observedTimeOrigin": 0,
             "observedTimeOriginTs": 185603319912,
             "observedNavigationStart": 0,
@@ -1499,7 +1499,7 @@
             "observedDomContentLoadedTs": 185608220734,
             "observedCumulativeLayoutShift": 0.42,
             "observedCumulativeLayoutShiftMainFrame": 0.42,
-            "observedOldCumulativeLayoutShift": 0.42,
+            "observedTotalCumulativeLayoutShift": 0.42,
             "observedFirstVisualChange": 3969,
             "observedFirstVisualChangeTs": 185607288912,
             "observedLastVisualChange": 4791,
diff --git a/types/artifacts.d.ts b/types/artifacts.d.ts
index 31b22cd84c05..711c5a1c7daf 100644
--- a/types/artifacts.d.ts
+++ b/types/artifacts.d.ts
@@ -748,7 +748,7 @@ declare global {
         maxPotentialFID: number | undefined;
         cumulativeLayoutShift: number | undefined;
         cumulativeLayoutShiftMainFrame: number | undefined;
-        oldCumulativeLayoutShift: number | undefined;
+        totalCumulativeLayoutShift: number | undefined;
         totalBlockingTime: number;
         observedTimeOrigin: number;
         observedTimeOriginTs: number;
@@ -756,7 +756,7 @@ declare global {
         observedNavigationStartTs: number;
         observedCumulativeLayoutShift: number | undefined;
         observedCumulativeLayoutShiftMainFrame: number | undefined;
-        observedOldCumulativeLayoutShift: number | undefined;
+        observedTotalCumulativeLayoutShift: number | undefined;
         observedFirstPaint: number | undefined;
         observedFirstPaintTs: number | undefined;
         observedFirstContentfulPaint: number;