diff --git a/src/components/shopping/FullShoppingListPage.vue b/src/components/shopping/FullShoppingListPage.vue
index 2b48751..2aa2110 100644
--- a/src/components/shopping/FullShoppingListPage.vue
+++ b/src/components/shopping/FullShoppingListPage.vue
@@ -4,8 +4,10 @@
     <meal-selection-list @meal-selected="mealSelected" @meal-unselected="mealUnselected" :checked="includedMeals" :meals="availableMeals" />
 
     <ul class="full-shopping-list">
-        <li v-for="item in listByProduct" :key="item.id">
-            <shopping-list-item :product="item.product" :sources="item.sources" />
+        <li v-for="item in listByProduct" :key="item.id" >
+            <shopping-list-item :product="item.product" :sources="item.sources" :totals="item.totals" />
+            <button v-if="item.product.id in found" @click="markNotFound(item)">Mark Not Found</button>
+            <button v-else @click="markFound(item)">Mark Found</button>
         </li>
     </ul>
 </template>
@@ -29,7 +31,7 @@
 <script>
 
 import data from '@/data.js'
-import { requestsToSources, groupByProduct } from './shopping.js'
+import { requestsToSources as flattenToIngredients, groupByProduct, groupingToIngredients } from './shopping.js'
 
 import MealSelectionList from './MealSelectionList.vue'
 import ShoppingListItem from './ShoppingListItem.vue'
@@ -47,7 +49,7 @@ export default {
         const to = new Date();
         to.setDate(to.getDate() + 7);
 
-        return { from, to, availableMeals: [], shoppingList: null, includedMeals: [], listByProduct: []}
+        return { from, to, availableMeals: [], shoppingList: null, includedMeals: [], listByProduct: [], found: {} }
     },
     async beforeMount() {
         this.availableMeals = await data.getMeals(this.from, this.to);
@@ -65,8 +67,14 @@ export default {
                 return;
 
             this.includedMeals = this.shoppingList.requests.map(r => r.meal).filter(m => m);
-            const sources = requestsToSources(this.shoppingList.requests);
+
+            const sources = flattenToIngredients(this.shoppingList.requests);
             this.listByProduct = groupByProduct(sources);
+
+            this.found = this.shoppingList.results.reduce((acc, r) => {
+                acc[r.product.id] = r;
+                return acc;
+            }, {});
         },
         async mealSelected(meal) {
             const request = await data.requestMeal(meal.id);
@@ -75,6 +83,17 @@ export default {
         async mealUnselected(meal) {
             await data.unrequestMeal(meal.id);
             this.shoppingList.requests = this.shoppingList.requests.filter(r => r.meal?.id !== meal.id);
+        },
+        async markFound(productGrouping) {
+            const result = await data.markFound(groupingToIngredients(productGrouping));
+
+            // Update shoppingList.result from result.created and result.removed
+            this.shoppingList.results = this.shoppingList.results.filter(r => !result.removed.some(removed => removed.id === r.id));
+            this.shoppingList.results.push(...result.created);
+        },
+        async markNotFound(item) {
+            const deletedRequests = await data.markNotFound(item.product.id);
+            this.shoppingList.results = this.shoppingList.results.filter(r => !deletedRequests.some(deleted => deleted.id === r.id));
         }
     }
 }
diff --git a/src/components/shopping/ShoppingListItem.vue b/src/components/shopping/ShoppingListItem.vue
index a731085..cca0e3f 100644
--- a/src/components/shopping/ShoppingListItem.vue
+++ b/src/components/shopping/ShoppingListItem.vue
@@ -5,7 +5,13 @@
     <img :src="product.img_small" class="product-image" />
     <div class="product-details">
         <h3 class="header">
-            <strong><a :href="product.link">{{ product.name }}</a></strong>, <small>{{ quantityRequired }} required.</small>
+            <strong><a :href="product.link">{{ product.name }}</a></strong>, 
+            <small>
+                <span v-for="(total, index) in totals" :key="total.id">
+                    <span v-if="index">, </span>
+                    <span>{{ total.quantity }} {{ total.unit }}</span>
+                </span>
+            </small>
         </h3>
         <p class="sources">
             <span v-for="(source, index) in sources" :key="source.id">
@@ -62,11 +68,10 @@
 
 export default {
     name: 'ShoppingListItem',
-    props: ['product', 'sources'],
+    props: ['product', 'sources', 'totals'],
     data() {
         return {
             expanded: false,
-            quantityRequired: 5,
         }
     },
 }
diff --git a/src/components/shopping/shopping.js b/src/components/shopping/shopping.js
index 535eb79..1ecc848 100644
--- a/src/components/shopping/shopping.js
+++ b/src/components/shopping/shopping.js
@@ -1,3 +1,5 @@
+import units from '@/units.js';
+
 export function mealToShoppingListSources(meal) {
     const sources = [];
     for (const recipe of meal.recipes) {
@@ -31,6 +33,37 @@ export function removeMealFromShoppingListSources(sources, meal) {
     return sources.filter(source => source.meal?.id !== meal.id);
 }
 
+export function groupingToIngredients(grouping) {
+    const product = grouping.product;
+    const totals = [];
+    for (const total of grouping.totals) {
+        totals.push({ id: 0, line: `${total.quantity} ${total.unit} of ${product.name}`, preparation: '', name: product.name, product, ...total });
+    }
+    return totals;
+}
+
+function calculateTotals(sources) {
+    const totals = {};
+    for (const source of sources) {
+        const { unit, factor } = units.getConversionFactor(source.ingredient.unit) ?? { unit: source.ingredient.unit, factor: 1 };
+
+        const quantity = source.ingredient.quantity / factor;
+        if (!totals[unit]) {
+            totals[unit] = quantity;
+        }
+        else {
+            totals[unit] += quantity;
+        }
+    }
+
+    const result = [];
+    for (const unit in totals) {
+        result.push({ unit, quantity: totals[unit] });
+    }
+
+    return result;
+}
+
 export function groupByProduct(sources) {
     const noProductKey = "no-product";
     const noProduct = { name: "No product", };
@@ -52,5 +85,9 @@ export function groupByProduct(sources) {
         grouped[key].sources.push(source);
     }
 
+    for (const key in grouped) {
+        grouped[key].totals = calculateTotals(grouped[key].sources);
+    }
+
     return Object.values(grouped);
 }
\ No newline at end of file
diff --git a/src/data.js b/src/data.js
index c331d3a..cf40b51 100644
--- a/src/data.js
+++ b/src/data.js
@@ -186,6 +186,26 @@ export default {
             credentials: "include",
         });
 
+        return await response.json();
+    },
+    async markFound(ingredients) {
+        const response = await fetch(BASE_URL + "/shopping/current/found", {
+            method: "POST",
+            credentials: "include",
+            headers: {
+                "Content-Type": "application/json"
+            },
+            body: JSON.stringify(ingredients),
+        });
+
+        return await response.json();
+    },
+    async markNotFound(product_id) {
+        const response = await fetch(BASE_URL + `/shopping/current/found/${product_id}`, {
+            method: "DELETE",
+            credentials: "include",
+        });
+
         return await response.json();
     }
 }
\ No newline at end of file
diff --git a/src/units.js b/src/units.js
new file mode 100644
index 0000000..73bdf77
--- /dev/null
+++ b/src/units.js
@@ -0,0 +1,114 @@
+export const equivalentUnits = {
+    'kg': {
+        'kgs': 1,
+        'kilograms': 1,
+        'kilogram': 1,
+
+        'g': 1000,
+        'gram': 1000,
+        'grams': 1000,
+
+        'lb': 2.20462,
+        'lbs': 2.20462,
+        'pound': 2.20462,
+        'pounds': 2.20462,
+    },
+    'litres': {
+        'l': 1,
+        'liter': 1,
+
+        'ml': 1000,
+        'milliliters': 1000,
+        'milliliter': 1000,
+
+        'fl oz': 33.814,
+        'fluid ounce': 33.814,
+        'fluid ounces': 33.814,
+
+        'cup': 4.22675,
+        'cups': 4.22675,
+
+        'tbsp': 67.628,
+        'tablespoon': 67.628,
+        'tablespoons': 67.628,
+
+        'tsp': 202.884,
+        'teaspoon': 202.884,
+        'teaspoons': 202.884,
+
+        'pt': 2.11338,
+        'pint': 2.11338,
+        'pints': 2.11338,
+
+        'qt': 1.05669,
+        'quart': 1.05669,
+        'quarts': 1.05669,
+
+        'gal': 0.264172,
+        'gallon': 0.264172,
+        'gallons': 0.264172,
+
+        'oz': 35.1951,
+        'ounce': 35.1951,
+    },
+    'items': {
+        'item': 1,
+        'items': 1,
+        'pcs': 1,
+        'piece': 1,
+        'pieces': 1,
+        'florets': 8, // Broccoli
+        'head': 1, // Broccoli
+        'heads': 1, // Broccoli
+        'slice': 10, // Bread
+        'slices': 10, // Bread
+        'loaf': 1, // Bread
+        'loaves': 1, // Bread
+        'cloves': 8, // Garlic
+        'bulb': 1, // Garlic
+        'bulbs': 1, // Garlic
+        'stalk': 1, // Celery
+        'stalks': 1, // Celery
+        'bunch': 1, // Cilantro
+        'bunches': 1, // Cilantro
+        'sprig': 1, // Cilantro
+        'sprigs': 1, // Cilantro
+        'cans': 1, // Canned goods
+        'can': 1, // Canned goods
+        'pack': 1, // Packaged goods
+        'packs': 1, // Packaged goods
+        'package': 1, // Packaged goods
+        'packages': 1, // Packaged goods
+        'container': 1, // Packaged goods
+        'containers': 1, // Packaged goods
+    },
+}
+
+function getBaseUnit(unit) {
+    for (const unitType in equivalentUnits) {
+        if (unit in equivalentUnits[unitType]) {
+            return unitType;
+        }
+    }
+
+    return null;
+}
+
+export default {
+    getConversionFactor(unit) {
+        let baseUnit = getBaseUnit(unit);
+        if (!baseUnit) {
+            unit = unit.toLowerCase();
+            baseUnit = getBaseUnit(unit);
+        }
+
+        if (!baseUnit) {
+            return null;
+        }
+
+        return {
+            unit: baseUnit,
+            factor: equivalentUnits[baseUnit][unit],
+        };
+    },
+}
\ No newline at end of file