diff --git a/include/core/map.h b/include/core/map.h
index b223536d..3df0ed88 100644
--- a/include/core/map.h
+++ b/include/core/map.h
@@ -45,7 +45,8 @@ public:
     void setConstantName(const QString &constantName) { m_constantName = constantName; }
     QString constantName() const { return m_constantName; }
 
-    static QString mapConstantFromName(QString mapName, bool includePrefix = true);
+    static QString mapConstantFromName(const QString &name);
+    QString expectedConstantName() const { return Map::mapConstantFromName(m_name); }
 
     void setLayout(Layout *layout);
     Layout* layout() const { return m_layout; }
diff --git a/include/core/maplayout.h b/include/core/maplayout.h
index da58c4b7..f8fb1b1c 100644
--- a/include/core/maplayout.h
+++ b/include/core/maplayout.h
@@ -20,9 +20,7 @@ public:
     Layout() {}
     Layout(const Layout &other);
 
-    static QString layoutConstantFromName(QString mapName);
-    static QString defaultSuffix();
-
+    static QString layoutConstantFromName(const QString &name);
 
     bool loaded = false;
 
diff --git a/include/core/utility.h b/include/core/utility.h
new file mode 100644
index 00000000..b1dbe8bc
--- /dev/null
+++ b/include/core/utility.h
@@ -0,0 +1,13 @@
+#pragma once
+#ifndef UTILITY_H
+#define UTILITY_H
+
+#include <QString>
+
+namespace Util {
+    void numericalModeSort(QStringList &list);
+    int roundUp(int numToRound, int multiple);
+    QString toDefineCase(QString input);
+}
+
+#endif // UTILITY_H
diff --git a/include/project.h b/include/project.h
index f3a1093b..5019a147 100644
--- a/include/project.h
+++ b/include/project.h
@@ -248,8 +248,6 @@ public:
     static QString getEmptyMapsecName();
     static QString getMapGroupPrefix();
 
-    static void numericalModeSort(QStringList &list);
-
 private:
     QMap<QString, QString> mapSectionDisplayNames;
     QMap<QString, qint64> modifiedFileTimestamps;
diff --git a/porymap.pro b/porymap.pro
index 97265940..2675e700 100644
--- a/porymap.pro
+++ b/porymap.pro
@@ -51,6 +51,7 @@ SOURCES += src/core/advancemapparser.cpp \
     src/core/parseutil.cpp \
     src/core/tile.cpp \
     src/core/tileset.cpp \
+    src/core/utility.cpp \
     src/core/validator.cpp \
     src/core/regionmap.cpp \
     src/core/wildmoninfo.cpp \
@@ -162,6 +163,7 @@ HEADERS  += include/core/advancemapparser.h \
     include/core/parseutil.h \
     include/core/tile.h \
     include/core/tileset.h \
+    include/core/utility.h \
     include/core/validator.h \
     include/core/regionmap.h \
     include/core/wildmoninfo.h \
diff --git a/src/core/map.cpp b/src/core/map.cpp
index d2ab8ef6..a77744b3 100644
--- a/src/core/map.cpp
+++ b/src/core/map.cpp
@@ -2,7 +2,7 @@
 #include "map.h"
 #include "imageproviders.h"
 #include "scripting.h"
-
+#include "utility.h"
 #include "editcommands.h"
 
 #include <QTime>
@@ -56,14 +56,9 @@ void Map::setLayout(Layout *layout) {
     }
 }
 
-QString Map::mapConstantFromName(QString mapName, bool includePrefix) {
-    // Transform map names of the form 'GraniteCave_B1F` into map constants like 'MAP_GRANITE_CAVE_B1F'.
-    static const QRegularExpression caseChange("([a-z])([A-Z])");
-    QString nameWithUnderscores = mapName.replace(caseChange, "\\1_\\2");
-    const QString prefix = includePrefix ? projectConfig.getIdentifier(ProjectIdentifier::define_map_prefix) : "";
-    QString withMapAndUppercase = prefix + nameWithUnderscores.toUpper();
-    static const QRegularExpression underscores("_+");
-    return withMapAndUppercase.replace(underscores, "_");
+// We don't enforce this for existing maps, but for creating new maps we need to formulaically generate a new MAP_NAME ID.
+QString Map::mapConstantFromName(const QString &name) {
+    return projectConfig.getIdentifier(ProjectIdentifier::define_map_prefix) + Util::toDefineCase(name);
 }
 
 int Map::getWidth() const {
diff --git a/src/core/maplayout.cpp b/src/core/maplayout.cpp
index 2b52a80f..54f630f7 100644
--- a/src/core/maplayout.cpp
+++ b/src/core/maplayout.cpp
@@ -4,6 +4,7 @@
 
 #include "scripting.h"
 #include "imageproviders.h"
+#include "utility.h"
 
 Layout::Layout(const Layout &other) : Layout() {
     copyFrom(&other);
@@ -32,13 +33,9 @@ void Layout::copyFrom(const Layout *other) {
     this->border = other->border;
 }
 
-QString Layout::layoutConstantFromName(QString mapName) {
-    // Transform map names of the form 'GraniteCave_B1F` into layout constants like 'LAYOUT_GRANITE_CAVE_B1F'.
-    static const QRegularExpression caseChange("([a-z])([A-Z])");
-    QString nameWithUnderscores = mapName.replace(caseChange, "\\1_\\2");
-    QString withMapAndUppercase = "LAYOUT_" + nameWithUnderscores.toUpper();
-    static const QRegularExpression underscores("_+");
-    return withMapAndUppercase.replace(underscores, "_");
+QString Layout::layoutConstantFromName(const QString &name) {
+    // TODO: Expose "LAYOUT_" to config
+    return "LAYOUT_" + Util::toDefineCase(name);
 }
 
 Layout::Settings Layout::settings() const {
diff --git a/src/core/utility.cpp b/src/core/utility.cpp
new file mode 100644
index 00000000..60f0089d
--- /dev/null
+++ b/src/core/utility.cpp
@@ -0,0 +1,40 @@
+#include "utility.h"
+
+#include <QCollator>
+#include <QRegularExpression>
+
+// Sometimes we want to sort names alphabetically to make them easier to find in large combo box lists.
+// QStringList::sort (as of writing) can only sort numbers in lexical order, which has an undesirable
+// effect (e.g. MAPSEC_ROUTE_10 comes after MAPSEC_ROUTE_1, rather than MAPSEC_ROUTE_9).
+// We can use QCollator to sort these lists with better handling for numbers.
+void Util::numericalModeSort(QStringList &list) {
+    static QCollator collator;
+    collator.setNumericMode(true);
+    std::sort(list.begin(), list.end(), collator);
+}
+
+int Util::roundUp(int numToRound, int multiple) {
+    if (multiple <= 0)
+        return numToRound;
+
+    int remainder = abs(numToRound) % multiple;
+    if (remainder == 0)
+        return numToRound;
+
+    if (numToRound < 0)
+        return -(abs(numToRound) - remainder);
+    else
+        return numToRound + multiple - remainder;
+}
+
+// Ex: input 'GraniteCave_B1F' returns 'GRANITE_CAVE_B1F'.
+QString Util::toDefineCase(QString input) {
+    static const QRegularExpression re_CaseChange("([a-z])([A-Z])");
+    input.replace(re_CaseChange, "\\1_\\2");
+
+    // Remove sequential underscores
+    static const QRegularExpression re_Underscores("_+");
+    input.replace(re_Underscores, "_");
+
+    return input.toUpper();
+}
diff --git a/src/project.cpp b/src/project.cpp
index 38b1810b..5e839c8e 100644
--- a/src/project.cpp
+++ b/src/project.cpp
@@ -10,6 +10,7 @@
 #include "filedialog.h"
 #include "validator.h"
 #include "orderedjson.h"
+#include "utility.h"
 
 #include <QDir>
 #include <QJsonArray>
@@ -349,7 +350,7 @@ Map *Project::createNewMap(const Project::NewMapSettings &settings, const Map* t
     map->setNeedsHealLocation(settings.canFlyTo);
 
     // Generate a unique MAP constant.
-    map->setConstantName(toUniqueIdentifier(Map::mapConstantFromName(map->name())));
+    map->setConstantName(toUniqueIdentifier(map->expectedConstantName()));
 
     Layout *layout = this->mapLayouts.value(settings.layout.id);
     if (!layout) {
@@ -2074,8 +2075,8 @@ bool Project::readTilesetLabels() {
         }
     }
 
-    numericalModeSort(this->primaryTilesetLabels);
-    numericalModeSort(this->secondaryTilesetLabels);
+    Util::numericalModeSort(this->primaryTilesetLabels);
+    Util::numericalModeSort(this->secondaryTilesetLabels);
 
     bool success = true;
     if (this->secondaryTilesetLabels.isEmpty()) {
@@ -2348,7 +2349,7 @@ bool Project::readRegionMapSections() {
     if (!this->mapSectionIdNames.contains(defaultName)) {
         this->mapSectionIdNames.append(defaultName);
     }
-    numericalModeSort(this->mapSectionIdNames);
+    Util::numericalModeSort(this->mapSectionIdNames);
 
     return true;
 }
@@ -2372,7 +2373,7 @@ void Project::addNewMapsec(const QString &idName) {
     }
 
     this->mapSectionIdNames.append(idName);
-    numericalModeSort(this->mapSectionIdNames);
+    Util::numericalModeSort(this->mapSectionIdNames);
 
     this->hasUnsavedDataChanges = true;
 
@@ -2596,7 +2597,7 @@ bool Project::readSongNames() {
     // Song names don't have a very useful order (esp. if we include SE_* values), so sort them alphabetically.
     // The default song should be the first in the list, not the first alphabetically, so save that before sorting.
     this->defaultSong = this->songNames.value(0, "0");
-    numericalModeSort(this->songNames);
+    Util::numericalModeSort(this->songNames);
     return true;
 }
 
@@ -3058,14 +3059,3 @@ bool Project::hasUnsavedChanges() {
     }
     return false;
 }
-
-// TODO: This belongs in a more general utility file, once we have one.
-// Sometimes we want to sort names alphabetically to make them easier to find in large combo box lists.
-// QStringList::sort (as of writing) can only sort numbers in lexical order, which has an undesirable
-// effect (e.g. MAPSEC_ROUTE_10 comes after MAPSEC_ROUTE_1, rather than MAPSEC_ROUTE_9).
-// We can use QCollator to sort these lists with better handling for numbers.
-void Project::numericalModeSort(QStringList &list) {
-    QCollator collator;
-    collator.setNumericMode(true);
-    std::sort(list.begin(), list.end(), collator);
-}
diff --git a/src/ui/movablerect.cpp b/src/ui/movablerect.cpp
index ba323185..fde7f820 100644
--- a/src/ui/movablerect.cpp
+++ b/src/ui/movablerect.cpp
@@ -3,6 +3,7 @@
 #include <QMessageBox>
 
 #include "movablerect.h"
+#include "utility.h"
 
 MovableRect::MovableRect(bool *enabled, int width, int height, QRgb color)
   : QGraphicsRectItem(0, 0, width, height)
@@ -22,10 +23,6 @@ void MovableRect::updateLocation(int x, int y) {
     ************************************************************************
  ******************************************************************************/
 
-int roundUp(int numToRound, int multiple) {
-    return (numToRound + multiple - 1) & -multiple;
-}
-
 ResizableRect::ResizableRect(QObject *parent, bool *enabled, int width, int height, QRgb color)
   : QObject(parent),
     MovableRect(enabled, width * 16, height * 16, color)
@@ -117,8 +114,8 @@ void ResizableRect::mousePressEvent(QGraphicsSceneMouseEvent *event) {
 }
 
 void ResizableRect::mouseMoveEvent(QGraphicsSceneMouseEvent *event) {
-    int dx = roundUp(event->scenePos().x() - this->clickedPos.x(), 16);
-    int dy = roundUp(event->scenePos().y() - this->clickedPos.y(), 16);
+    int dx = Util::roundUp(event->scenePos().x() - this->clickedPos.x(), 16);
+    int dy = Util::roundUp(event->scenePos().y() - this->clickedPos.y(), 16);
 
     QRect resizedRect = this->clickedRect;
 
diff --git a/src/ui/projectsettingseditor.cpp b/src/ui/projectsettingseditor.cpp
index 1250e8dd..c536fd07 100644
--- a/src/ui/projectsettingseditor.cpp
+++ b/src/ui/projectsettingseditor.cpp
@@ -3,6 +3,7 @@
 #include "noscrollcombobox.h"
 #include "prefab.h"
 #include "filedialog.h"
+#include "utility.h"
 
 #include <QAbstractButton>
 #include <QFormLayout>
@@ -293,7 +294,7 @@ QStringList ProjectSettingsEditor::getWarpBehaviorsList() {
 
 void ProjectSettingsEditor::setWarpBehaviorsList(QStringList list) {
     list.removeDuplicates();
-    Project::numericalModeSort(list);
+    Util::numericalModeSort(list);
     ui->textEdit_WarpBehaviors->setText(list.join("\n"));
 }
 
diff --git a/src/ui/resizelayoutpopup.cpp b/src/ui/resizelayoutpopup.cpp
index 45559b70..20a378b9 100644
--- a/src/ui/resizelayoutpopup.cpp
+++ b/src/ui/resizelayoutpopup.cpp
@@ -2,12 +2,10 @@
 #include "editor.h"
 #include "movablerect.h"
 #include "config.h"
+#include "utility.h"
 
 #include "ui_resizelayoutpopup.h"
 
-// TODO: put this in a util file or something
-extern int roundUp(int, int);
-
 CheckeredBgScene::CheckeredBgScene(QObject *parent) : QGraphicsScene(parent) { }
 
 void CheckeredBgScene::drawBackground(QPainter *painter, const QRectF &rect) {
@@ -62,7 +60,7 @@ void BoundedPixmapItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
 QVariant BoundedPixmapItem::itemChange(GraphicsItemChange change, const QVariant &value) {
     if (change == ItemPositionChange && scene()) {
         QPointF newPos = value.toPointF();
-        return QPointF(roundUp(newPos.x(), 16), roundUp(newPos.y(), 16));
+        return QPointF(Util::roundUp(newPos.x(), 16), Util::roundUp(newPos.y(), 16));
     }
     else
         return QGraphicsItem::itemChange(change, value);
diff --git a/src/ui/wildmonchart.cpp b/src/ui/wildmonchart.cpp
index 69b7b17e..521706d6 100644
--- a/src/ui/wildmonchart.cpp
+++ b/src/ui/wildmonchart.cpp
@@ -2,6 +2,7 @@
 #include "wildmonchart.h"
 #include "ui_wildmonchart.h"
 #include "config.h"
+#include "utility.h"
 
 static const QString baseWindowTitle = QString("Wild Pokémon Summary Charts");
 
@@ -367,13 +368,7 @@ QChart* WildMonChart::createLevelDistributionChart() {
     series->attachAxis(axisY);
 
     // We round the y-axis max up to a multiple of 5.
-    auto roundUp = [](int num, int multiple) {
-        auto remainder = num % multiple;
-        if (remainder == 0)
-            return num;
-        return num + multiple - remainder;
-    };
-    axisY->setMax(roundUp(qCeil(axisY->max()), 5));
+    axisY->setMax(Util::roundUp(qCeil(axisY->max()), 5));
 
     return chart;
 }