diff --git a/www/__tests__/metricsHelper.test.ts b/www/__tests__/metricsHelper.test.ts
index 07fe64736..a6afc7d63 100644
--- a/www/__tests__/metricsHelper.test.ts
+++ b/www/__tests__/metricsHelper.test.ts
@@ -1,10 +1,20 @@
+import { DateTime } from 'luxon';
 import {
   calculatePercentChange,
   formatDate,
   formatDateRangeOfDays,
   getLabelsForDay,
   getUniqueLabelsForDays,
+  secondsToHours,
+  secondsToMinutes,
   segmentDaysByWeeks,
+  metricToValue,
+  tsForDayOfMetricData,
+  valueForFieldOnDay,
+  generateSummaryFromData,
+  isCustomLabels,
+  isAllCustom,
+  isOnFoot,
 } from '../js/metrics/metricsHelper';
 import { DayOfMetricData } from '../js/metrics/metricsTypes';
 
@@ -27,9 +37,17 @@ describe('metricsHelper', () => {
     });
   });
 
-  // secondsToMinutes
+  describe('secondsToMinutes', () => {
+    it("should convert from seconds to minutes properly", () => {
+      expect(secondsToMinutes(360)).toEqual(6);
+    });
+  });
 
-  // secondsToHours
+  describe('secondsToHours', () => {
+    it("should convert from seconds to hours properly", () => {
+      expect(secondsToHours(3600)).toEqual(1);
+    });
+  });
 
   describe('segmentDaysByWeeks', () => {
     const days1 = [
@@ -73,4 +91,149 @@ describe('metricsHelper', () => {
       expect(formatDateRangeOfDays(days1)).toEqual('1/1 - 1/4');
     });
   });
+
+  describe('metricToValue', () => {
+    const metric = {
+      walking: 10,
+      nUsers: 5,
+    };
+    it('returns correct value for user population', () => {
+      const result = metricToValue('user', metric, 'walking');
+      expect(result).toBe(10); 
+    });
+  
+    it('returns correct value for aggregate population', () => {
+      const result = metricToValue('aggregate', metric, 'walking');
+      expect(result).toBe(2); 
+    });
+  });
+
+  describe('isOnFoot', () => {
+    it('returns true for on foot mode', () => {
+      const result = isOnFoot('WALKING');
+      expect(result).toBe(true);
+    });
+
+    it('returns false for non on foot mode', () => {
+      const result = isOnFoot('DRIVING'); 
+      expect(result).toBe(false);
+    });
+  });
+
+  describe('calculatePercentChange', () => {
+    it('calculates percent change correctly for low and high values', () => {
+      const pastWeekRange = { low: 10, high: 30 };
+      const previousWeekRange = { low: 5, high: 10 };
+      const result = calculatePercentChange(pastWeekRange, previousWeekRange);
+      expect(result.low).toBe(100);
+      expect(result.high).toBe(200);
+    });
+  });
+
+  describe('tsForDayOfMetricData', () => {
+    const mockDay = { 
+      date: '2024-05-28T12:00:00Z',
+      nUsers: 10, 
+    };
+    let _datesTsCache;
+    beforeEach(() => {
+      _datesTsCache = {};
+    });
+  
+    it('calculates timestamp for a given day', () => {
+      const expectedTimestamp = DateTime.fromISO(mockDay.date).toSeconds();
+      const result = tsForDayOfMetricData(mockDay);
+      expect(result).toBe(expectedTimestamp);
+    });
+  
+    it('caches the timestamp for subsequent calls with the same day', () => {
+      const firstResult = tsForDayOfMetricData(mockDay);
+      const secondResult = tsForDayOfMetricData(mockDay);
+      expect(secondResult).toBe(firstResult);
+    });
+  });
+
+  describe('valueForFieldOnDay', () => {
+    const mockDay = {
+      date: '2024-05-28T12:00:00Z',
+      nUsers: 10,
+      field_key: 'example_value'
+    };
+  
+    it('returns the value for a specified field and key', () => {
+      const result = valueForFieldOnDay(mockDay, 'field', 'key');
+      expect(result).toBe('example_value');
+    });
+  });
+
+  describe('generateSummaryFromData', () => {
+    const modeMap = [
+        { key: 'mode1', values: [['value1', 10], ['value2', 20]] },
+        { key: 'mode2', values: [['value3', 30], ['value4', 40]] },
+      ];
+    it('returns summary with sum for non-speed metric', () => {
+      const metric = 'some_metric';
+      const expectedResult = [
+        { key: 'mode1', values: 30 }, 
+        { key: 'mode2', values: 70 }, 
+      ];
+      const result = generateSummaryFromData(modeMap, metric);
+      expect(result).toEqual(expectedResult);
+    });
+  
+    it('returns summary with average for speed metric', () => {
+      const metric = 'mean_speed';
+      const expectedResult = [
+        { key: 'mode1', values: 15 }, 
+        { key: 'mode2', values: 35 }, 
+      ];
+      const result = generateSummaryFromData(modeMap, metric);
+      expect(result).toEqual(expectedResult);
+    });
+  });
+
+  describe('isCustomLabels', () => {
+    const modeMap = [
+      { key: 'label_mode1', values: [['value1', 10], ['value2', 20]] },
+      { key: 'label_mode2', values: [['value3', 30], ['value4', 40]] },
+    ];
+
+    it('returns true for all custom labels', () => {
+      const result = isCustomLabels(modeMap);
+      expect(result).toBe(true);
+    });
+  
+    it('returns true for all sensed labels', () => {
+      const result = isCustomLabels(modeMap);
+      expect(result).toBe(true);
+    });
+  
+    it('returns false for mixed custom and sensed labels', () => {
+      const result = isCustomLabels(modeMap);
+      expect(result).toBe(false);
+    });
+  });
+
+  describe('isAllCustom', () => {
+    it('returns true when all keys are custom', () => {
+      const isSensedKeys = [false, false, false]; 
+      const isCustomKeys = [true, true, true];
+      const result = isAllCustom(isSensedKeys, isCustomKeys);
+      expect(result).toBe(true);
+    });
+  
+    it('returns false when all keys are sensed', () => {
+      const isSensedKeys = [true, true, true]; 
+      const isCustomKeys = [false, false, false];
+      const result = isAllCustom(isSensedKeys, isCustomKeys);
+      expect(result).toBe(false);
+    });
+  
+    it('returns undefined for mixed custom and sensed keys', () => {
+      const isSensedKeys = [true, false, true]; 
+      const isCustomKeys = [false, true, false];
+      const result = isAllCustom(isSensedKeys, isCustomKeys);
+      expect(result).toBe(undefined);
+    });
+  });
 });