diff --git a/modules/operations/copy.js b/modules/operations/copy.js
index 6a4248a0d..d3bfa1c76 100644
--- a/modules/operations/copy.js
+++ b/modules/operations/copy.js
@@ -3,8 +3,7 @@ import { event as d3_event } from 'd3-selection';
 import { t } from '../core/localizer';
 import { behaviorOperation } from '../behavior/operation';
 import { uiCmd } from '../ui/cmd';
-import { geoExtent } from '../geo';
-import { utilArrayGroupBy, utilGetAllNodes } from '../util';
+import { utilArrayGroupBy, utilTotalExtent } from '../util';
 
 export function operationCopy(context, selectedIDs) {
 
@@ -109,10 +108,7 @@ export function operationCopy(context, selectedIDs) {
 
 
     operation.disabled = function() {
-        var nodes = utilGetAllNodes(getFilteredIdsToCopy(), context.graph());
-        var extent = nodes.reduce(function(extent, node) {
-            return extent.extend(node.extent(context.graph()));
-        }, geoExtent());
+        var extent = utilTotalExtent(getFilteredIdsToCopy(), context.graph());
         if (extent.percentContainedIn(context.map().extent()) < 0.8) {
             return 'too_large';
         }
diff --git a/modules/operations/delete.js b/modules/operations/delete.js
index 43238eaaf..9f711dab6 100644
--- a/modules/operations/delete.js
+++ b/modules/operations/delete.js
@@ -1,11 +1,11 @@
 import { t } from '../core/localizer';
 import { actionDeleteMultiple } from '../actions/delete_multiple';
 import { behaviorOperation } from '../behavior/operation';
-import { geoExtent, geoSphericalDistance } from '../geo';
+import { geoSphericalDistance } from '../geo';
 import { modeBrowse } from '../modes/browse';
 import { modeSelect } from '../modes/select';
 import { uiCmd } from '../ui/cmd';
-import { utilGetAllNodes } from '../util';
+import { utilGetAllNodes, utilTotalExtent } from '../util';
 
 
 export function operationDelete(context, selectedIDs) {
@@ -13,9 +13,7 @@ export function operationDelete(context, selectedIDs) {
     var action = actionDeleteMultiple(selectedIDs);
     var nodes = utilGetAllNodes(selectedIDs, context.graph());
     var coords = nodes.map(function(n) { return n.loc; });
-    var extent = nodes.reduce(function(extent, node) {
-        return extent.extend(node.extent(context.graph()));
-    }, geoExtent());
+    var extent = utilTotalExtent(selectedIDs, context.graph());
 
 
     var operation = function() {
diff --git a/modules/operations/disconnect.js b/modules/operations/disconnect.js
index 55a8106f7..8f71731b1 100644
--- a/modules/operations/disconnect.js
+++ b/modules/operations/disconnect.js
@@ -1,8 +1,7 @@
 import { t } from '../core/localizer';
 import { actionDisconnect } from '../actions/disconnect';
 import { behaviorOperation } from '../behavior/operation';
-import { geoExtent } from '../geo';
-import { utilGetAllNodes } from '../util/index';
+import { utilGetAllNodes, utilTotalExtent } from '../util/util';
 
 
 export function operationDisconnect(context, selectedIDs) {
@@ -28,9 +27,7 @@ export function operationDisconnect(context, selectedIDs) {
         // At the selected vertices, disconnect the selected ways, if any, else
         // disconnect all connected ways
 
-        _extent = _vertexIDs.reduce(function(extent, id) {
-            return extent.extend(context.entity(id).extent(context.graph()));
-        }, geoExtent());
+        _extent = utilTotalExtent(_vertexIDs, context.graph());
 
         _vertexIDs.forEach(function(vertexID) {
             var action = actionDisconnect(vertexID);
@@ -61,9 +58,7 @@ export function operationDisconnect(context, selectedIDs) {
         });
         _nodes = utilGetAllNodes(_wayIDs, context.graph());
         _coords = _nodes.map(function(n) { return n.loc; });
-        _extent = ways.reduce(function(extent, entity) {
-            return extent.extend(entity.extent(context.graph()));
-        }, geoExtent());
+        _extent = utilTotalExtent(ways, context.graph());
 
         // actions for connected nodes shared by at least two selected ways
         var sharedActions = [];
diff --git a/modules/operations/move.js b/modules/operations/move.js
index 3a25f264c..800064cf6 100644
--- a/modules/operations/move.js
+++ b/modules/operations/move.js
@@ -1,17 +1,14 @@
 import { t } from '../core/localizer';
 import { behaviorOperation } from '../behavior/operation';
-import { geoExtent } from '../geo';
 import { modeMove } from '../modes/move';
-import { utilGetAllNodes } from '../util';
+import { utilGetAllNodes, utilTotalExtent } from '../util/util';
 
 
 export function operationMove(context, selectedIDs) {
     var multi = (selectedIDs.length === 1 ? 'single' : 'multiple');
     var nodes = utilGetAllNodes(selectedIDs, context.graph());
     var coords = nodes.map(function(n) { return n.loc; });
-    var extent = nodes.reduce(function(extent, node) {
-        return extent.extend(node.extent(context.graph()));
-    }, geoExtent());
+    var extent = utilTotalExtent(selectedIDs, context.graph());
 
 
     var operation = function() {
diff --git a/modules/operations/reflect.js b/modules/operations/reflect.js
index 36ffa554f..9be80cfb9 100644
--- a/modules/operations/reflect.js
+++ b/modules/operations/reflect.js
@@ -1,8 +1,7 @@
 import { t } from '../core/localizer';
 import { actionReflect } from '../actions/reflect';
 import { behaviorOperation } from '../behavior/operation';
-import { geoExtent } from '../geo';
-import { utilGetAllNodes } from '../util';
+import { utilGetAllNodes, utilTotalExtent } from '../util/util';
 
 
 export function operationReflectShort(context, selectedIDs) {
@@ -20,9 +19,7 @@ export function operationReflect(context, selectedIDs, axis) {
     var multi = (selectedIDs.length === 1 ? 'single' : 'multiple');
     var nodes = utilGetAllNodes(selectedIDs, context.graph());
     var coords = nodes.map(function(n) { return n.loc; });
-    var extent = nodes.reduce(function(extent, node) {
-        return extent.extend(node.extent(context.graph()));
-    }, geoExtent());
+    var extent = utilTotalExtent(selectedIDs, context.graph());
 
 
     var operation = function() {
diff --git a/modules/operations/rotate.js b/modules/operations/rotate.js
index 7fdf9c4c0..245945486 100644
--- a/modules/operations/rotate.js
+++ b/modules/operations/rotate.js
@@ -1,17 +1,14 @@
 import { t } from '../core/localizer';
 import { behaviorOperation } from '../behavior/operation';
-import { geoExtent } from '../geo';
 import { modeRotate } from '../modes/rotate';
-import { utilGetAllNodes } from '../util';
+import { utilGetAllNodes, utilTotalExtent } from '../util/util';
 
 
 export function operationRotate(context, selectedIDs) {
     var multi = (selectedIDs.length === 1 ? 'single' : 'multiple');
     var nodes = utilGetAllNodes(selectedIDs, context.graph());
     var coords = nodes.map(function(n) { return n.loc; });
-    var extent = nodes.reduce(function(extent, node) {
-        return extent.extend(node.extent(context.graph()));
-    }, geoExtent());
+    var extent = utilTotalExtent(selectedIDs, context.graph());
 
 
     var operation = function() {
diff --git a/modules/operations/straighten.js b/modules/operations/straighten.js
index ae2e744dd..f1829c15d 100644
--- a/modules/operations/straighten.js
+++ b/modules/operations/straighten.js
@@ -2,8 +2,7 @@ import { t } from '../core/localizer';
 import { actionStraightenNodes } from '../actions/straighten_nodes';
 import { actionStraightenWay } from '../actions/straighten_way';
 import { behaviorOperation } from '../behavior/operation';
-import { geoExtent } from '../geo';
-import { utilArrayDifference, utilGetAllNodes } from '../util/index';
+import { utilArrayDifference, utilGetAllNodes, utilTotalExtent } from '../util/index';
 
 
 export function operationStraighten(context, selectedIDs) {
@@ -13,9 +12,7 @@ export function operationStraighten(context, selectedIDs) {
 
     var _nodes = utilGetAllNodes(selectedIDs, context.graph());
     var _coords = _nodes.map(function(n) { return n.loc; });
-    var _extent = _nodes.reduce(function(extent, node) {
-        return extent.extend(node.extent(context.graph()));
-    }, geoExtent());
+    var _extent = utilTotalExtent(selectedIDs, context.graph());
     var _action = chooseAction();
     var _geometry;
 
@@ -67,9 +64,7 @@ export function operationStraighten(context, selectedIDs) {
 
             if (_nodeIDs.length) {
                 // If we're only straightenting between two points, we only need that extent visible
-                _extent = utilGetAllNodes(_nodeIDs, context.graph()).reduce(function(extent, node) {
-                    return extent.extend(node.extent(context.graph()));
-                }, geoExtent());
+                _extent = utilTotalExtent(_nodeIDs, context.graph());
             }
 
             _geometry = _wayIDs.length === 1 ? 'line' : 'lines';
diff --git a/modules/ui/fields/address.js b/modules/ui/fields/address.js
index 998393f33..6564e1f2b 100644
--- a/modules/ui/fields/address.js
+++ b/modules/ui/fields/address.js
@@ -6,7 +6,7 @@ import { presetManager } from '../../presets';
 import { fileFetcher } from '../../core/file_fetcher';
 import { geoExtent, geoChooseEdge, geoSphericalDistance } from '../../geo';
 import { uiCombobox } from '../combobox';
-import { utilArrayUniqBy, utilGetSetValue, utilNoAuto, utilRebind } from '../../util';
+import { utilArrayUniqBy, utilGetSetValue, utilNoAuto, utilRebind, utilTotalExtent } from '../../util';
 import { t } from '../../core/localizer';
 
 
@@ -302,10 +302,7 @@ export function uiFieldAddress(field, context) {
 
 
     function combinedEntityExtent() {
-        return _entityIDs && _entityIDs.length && _entityIDs.reduce(function(extent, entityID) {
-            var entity = context.graph().entity(entityID);
-            return extent.extend(entity.extent(context.graph()));
-        }, geoExtent());
+        return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
     }
 
 
diff --git a/modules/ui/fields/combo.js b/modules/ui/fields/combo.js
index 6ef3c51be..a76fb3981 100644
--- a/modules/ui/fields/combo.js
+++ b/modules/ui/fields/combo.js
@@ -4,12 +4,11 @@ import { drag as d3_drag } from 'd3-drag';
 import * as countryCoder from '@ideditor/country-coder';
 
 import { fileFetcher } from '../../core/file_fetcher';
-import { geoExtent } from '../../geo';
 import { osmEntity } from '../../osm/entity';
 import { t } from '../../core/localizer';
 import { services } from '../../services';
 import { uiCombobox } from '../combobox';
-import { utilArrayUniq, utilGetSetValue, utilNoAuto, utilRebind, utilUnicodeCharsCount } from '../../util';
+import { utilArrayUniq, utilGetSetValue, utilNoAuto, utilRebind, utilTotalExtent, utilUnicodeCharsCount } from '../../util';
 
 export {
     uiFieldCombo as uiFieldMultiCombo,
@@ -691,10 +690,7 @@ export function uiFieldCombo(field, context) {
 
 
     function combinedEntityExtent() {
-        return _entityIDs && _entityIDs.length && _entityIDs.reduce(function(extent, entityID) {
-            var entity = context.graph().entity(entityID);
-            return extent.extend(entity.extent(context.graph()));
-        }, geoExtent());
+        return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
     }
 
 
diff --git a/modules/ui/fields/input.js b/modules/ui/fields/input.js
index 5e7069d42..3f231cb17 100644
--- a/modules/ui/fields/input.js
+++ b/modules/ui/fields/input.js
@@ -5,8 +5,7 @@ import * as countryCoder from '@ideditor/country-coder';
 import { presetManager } from '../../presets';
 import { fileFetcher } from '../../core/file_fetcher';
 import { t, localizer } from '../../core/localizer';
-import { geoExtent } from '../../geo';
-import { utilGetSetValue, utilNoAuto, utilRebind } from '../../util';
+import { utilGetSetValue, utilNoAuto, utilRebind, utilTotalExtent } from '../../util';
 import { svgIcon } from '../../svg/icon';
 
 export {
@@ -219,10 +218,7 @@ export function uiFieldText(field, context) {
     };
 
     function combinedEntityExtent() {
-        return _entityIDs && _entityIDs.length && _entityIDs.reduce(function(extent, entityID) {
-            var entity = context.graph().entity(entityID);
-            return extent.extend(entity.extent(context.graph()));
-        }, geoExtent());
+        return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
     }
 
     return utilRebind(i, dispatch, 'on');
diff --git a/modules/ui/fields/localized.js b/modules/ui/fields/localized.js
index c222bc2b3..66f7e3f14 100644
--- a/modules/ui/fields/localized.js
+++ b/modules/ui/fields/localized.js
@@ -5,12 +5,11 @@ import * as countryCoder from '@ideditor/country-coder';
 import { presetManager } from '../../presets';
 import { fileFetcher } from '../../core/file_fetcher';
 import { t, localizer } from '../../core/localizer';
-import { geoExtent } from '../../geo';
 import { services } from '../../services';
 import { svgIcon } from '../../svg';
 import { uiTooltip } from '../tooltip';
 import { uiCombobox } from '../combobox';
-import { utilArrayUniq, utilEditDistance, utilGetSetValue, utilNoAuto, utilRebind, utilUniqueDomId } from '../../util';
+import { utilArrayUniq, utilEditDistance, utilGetSetValue, utilNoAuto, utilRebind, utilTotalExtent, utilUniqueDomId } from '../../util';
 
 var _languagesArray = [];
 
@@ -649,10 +648,7 @@ export function uiFieldLocalized(field, context) {
     }
 
     function combinedEntityExtent() {
-        return _entityIDs && _entityIDs.length && _entityIDs.reduce(function(extent, entityID) {
-            var entity = context.graph().entity(entityID);
-            return extent.extend(entity.extent(context.graph()));
-        }, geoExtent());
+        return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
     }
 
     return utilRebind(localized, dispatch, 'on');
diff --git a/modules/ui/fields/maxspeed.js b/modules/ui/fields/maxspeed.js
index 4e5f230b3..982b2eb0f 100644
--- a/modules/ui/fields/maxspeed.js
+++ b/modules/ui/fields/maxspeed.js
@@ -2,10 +2,9 @@ import { dispatch as d3_dispatch } from 'd3-dispatch';
 import { select as d3_select } from 'd3-selection';
 import * as countryCoder from '@ideditor/country-coder';
 
-import { geoExtent } from '../../geo';
 import { uiCombobox } from '../combobox';
 import { t } from '../../core/localizer';
-import { utilGetSetValue, utilNoAuto, utilRebind } from '../../util';
+import { utilGetSetValue, utilNoAuto, utilRebind, utilTotalExtent } from '../../util';
 
 
 export function uiFieldMaxspeed(field, context) {
@@ -146,10 +145,7 @@ export function uiFieldMaxspeed(field, context) {
 
 
     function combinedEntityExtent() {
-        return _entityIDs && _entityIDs.length && _entityIDs.reduce(function(extent, entityID) {
-            var entity = context.graph().entity(entityID);
-            return extent.extend(entity.extent(context.graph()));
-        }, geoExtent());
+        return _entityIDs && _entityIDs.length && utilTotalExtent(_entityIDs, context.graph());
     }
 
 
diff --git a/modules/util/index.js b/modules/util/index.js
index 11358f5b5..d82208a15 100644
--- a/modules/util/index.js
+++ b/modules/util/index.js
@@ -45,6 +45,7 @@ export { utilStringQs } from './util';
 export { utilTagDiff } from './util';
 export { utilTagText } from './util';
 export { utilTiler } from './tiler';
+export { utilTotalExtent } from './util';
 export { utilTriggerEvent } from './trigger_event';
 export { utilUnicodeCharsCount } from './util';
 export { utilUnicodeCharsTruncated } from './util';
diff --git a/modules/util/util.js b/modules/util/util.js
index e53d52f04..38fbf3803 100644
--- a/modules/util/util.js
+++ b/modules/util/util.js
@@ -5,6 +5,7 @@ import { presetManager } from '../presets';
 import { t, localizer } from '../core/localizer';
 import { utilArrayUnion } from './array';
 import { utilDetect } from './detect';
+import { geoExtent } from '../geo/extent';
 
 
 export function utilTagText(entity) {
@@ -15,6 +16,20 @@ export function utilTagText(entity) {
 }
 
 
+export function utilTotalExtent(array, graph) {
+    var extent = geoExtent();
+    var val, entity;
+    for (var i = 0; i < array.length; i++) {
+        val = array[i];
+        entity = typeof val === 'string' ? graph.hasEntity(val) : val;
+        if (entity) {
+            extent._extend(entity.extent(graph));
+        }
+    }
+    return extent;
+}
+
+
 export function utilTagDiff(oldTags, newTags) {
     var tagDiff = [];
     var keys = utilArrayUnion(Object.keys(oldTags), Object.keys(newTags)).sort();
@@ -523,7 +538,7 @@ export function utilUnicodeCharsCount(str) {
 }
 
 // Returns a new string representing `str` cut from its start to `limit` length
-// in unicode characters. Note that this runs the risk of splitting graphemes. 
+// in unicode characters. Note that this runs the risk of splitting graphemes.
 export function utilUnicodeCharsTruncated(str, limit) {
     return Array.from(str).slice(0, limit).join('');
 }