diff --git a/.changeset/wild-lobsters-doubt.md b/.changeset/wild-lobsters-doubt.md
new file mode 100644
index 00000000..fda48352
--- /dev/null
+++ b/.changeset/wild-lobsters-doubt.md
@@ -0,0 +1,8 @@
+---
+'@spotlightjs/spotlight': patch
+'@spotlightjs/electron': patch
+'@spotlightjs/overlay': patch
+'@spotlightjs/astro': patch
+---
+
+Unify and simplify duration calculations and representations
diff --git a/packages/overlay/src/integrations/sentry/components/explore/traces/TraceDetails/components/TraceTreeview.tsx b/packages/overlay/src/integrations/sentry/components/explore/traces/TraceDetails/components/TraceTreeview.tsx
index 0bd6c3ff..a716a9d9 100644
--- a/packages/overlay/src/integrations/sentry/components/explore/traces/TraceDetails/components/TraceTreeview.tsx
+++ b/packages/overlay/src/integrations/sentry/components/explore/traces/TraceDetails/components/TraceTreeview.tsx
@@ -1,10 +1,10 @@
 import { useState } from 'react';
 import { useParams } from 'react-router-dom';
 import sentryDataCache from '../../../../../data/sentryDataCache';
-import { getDuration } from '../../../../../utils/duration';
 import DateTime from '../../../../DateTime';
 import SpanDetails from '../../spans/SpanDetails';
 import SpanTree from '../../spans/SpanTree';
+import { getFormattedSpanDuration } from '../../../../../utils/duration';
 
 type TraceTreeViewProps = { traceId: string };
 
@@ -29,10 +29,7 @@ export default function TraceTreeview({ traceId }: TraceTreeViewProps) {
           </div>
           <span>&mdash;</span>
           <span>
-            <strong className="text-primary-200 font-bold">
-              {getDuration(trace.start_timestamp, trace.timestamp).toLocaleString()} ms
-            </strong>{' '}
-            recorded in{' '}
+            <strong className="text-primary-200 font-bold">{getFormattedSpanDuration(trace)}</strong> recorded in{' '}
             <strong className="text-primary-200 font-bold">{trace.spans.length.toLocaleString()} spans</strong>
           </span>
         </div>
diff --git a/packages/overlay/src/integrations/sentry/components/explore/traces/TraceList.tsx b/packages/overlay/src/integrations/sentry/components/explore/traces/TraceList.tsx
index 285b2076..1982c13f 100644
--- a/packages/overlay/src/integrations/sentry/components/explore/traces/TraceList.tsx
+++ b/packages/overlay/src/integrations/sentry/components/explore/traces/TraceList.tsx
@@ -7,7 +7,7 @@ import classNames from '../../../../../lib/classNames';
 import { useSpotlightContext } from '../../../../../lib/useSpotlightContext';
 import { useSentryHelpers } from '../../../data/useSentryHelpers';
 import { useSentryTraces } from '../../../data/useSentryTraces';
-import { getDuration } from '../../../utils/duration';
+import { getFormattedSpanDuration } from '../../../utils/duration';
 import { truncateId } from '../../../utils/text';
 import HiddenItemsButton from '../../HiddenItemsButton';
 import { TraceRootTxnName } from './TraceDetails/components/TraceRootTxnName';
@@ -35,7 +35,6 @@ export default function TraceList() {
             />
           )}
           {filteredTraces.map(trace => {
-            const duration = getDuration(trace.start_timestamp, trace.timestamp);
             return (
               <Link
                 className="hover:bg-primary-900 flex cursor-pointer items-center gap-x-4 px-6 py-2"
@@ -63,7 +62,7 @@ export default function TraceList() {
                       {trace.status || ''}
                     </div>
                     <div>&mdash;</div>
-                    <div>{duration} ms</div>
+                    <div>{getFormattedSpanDuration(trace)}</div>
                     <div>&mdash;</div>
                     <div>
                       {trace.spans.length.toLocaleString()} spans, {trace.transactions.length.toLocaleString()} txns
diff --git a/packages/overlay/src/integrations/sentry/components/explore/traces/spans/SpanDetails.tsx b/packages/overlay/src/integrations/sentry/components/explore/traces/spans/SpanDetails.tsx
index 2a870ede..80fc6f91 100644
--- a/packages/overlay/src/integrations/sentry/components/explore/traces/spans/SpanDetails.tsx
+++ b/packages/overlay/src/integrations/sentry/components/explore/traces/spans/SpanDetails.tsx
@@ -7,7 +7,7 @@ import { DB_SPAN_REGEX } from '../../../../constants';
 import dataCache from '../../../../data/sentryDataCache';
 import type { SentryErrorEvent, Span, TraceContext } from '../../../../types';
 import { formatBytes } from '../../../../utils/bytes';
-import { getDuration } from '../../../../utils/duration';
+import { getFormattedDuration } from '../../../../utils/duration';
 import DateTime from '../../../DateTime';
 import { ErrorTitle } from '../../../events/error/Error';
 import SpanTree from './SpanTree';
@@ -87,7 +87,7 @@ export default function SpanDetails({
 }) {
   const [spanNodeWidth, setSpanNodeWidth] = useState<number>(50);
 
-  const spanDuration = getDuration(span.start_timestamp, span.timestamp);
+  const spanDuration = span.timestamp - span.start_timestamp;
 
   const errors = dataCache.getEventsByTrace(span.trace_id).filter(e => e.type !== 'transaction' && 'exception' in e);
 
@@ -115,7 +115,7 @@ export default function SpanDetails({
               <DateTime date={span.start_timestamp} />
               <span>&mdash;</span>
               <span>
-                <strong>{getDuration(startTimestamp, span.start_timestamp)} ms</strong> into trace
+                <strong>{getFormattedDuration(spanDuration)}</strong> into trace
               </span>
             </div>
             <div className="flex-1">
@@ -123,11 +123,11 @@ export default function SpanDetails({
                 <div
                   className="bg-primary-800 absolute bottom-0 top-0 -m-0.5 flex w-full items-center p-0.5"
                   style={{
-                    left: `min(${((span.start_timestamp - startTimestamp) / totalDuration) * 100}%, 100% - 1px)`,
+                    left: `min(${(spanDuration / totalDuration) * 100}%, 100% - 1px)`,
                     width: `max(1px, ${(spanDuration / totalDuration) * 100}%)`,
                   }}
                 >
-                  <span className="whitespace-nowrap">{spanDuration} ms</span>
+                  <span className="whitespace-nowrap">{getFormattedDuration(spanDuration)}</span>
                 </div>
               </div>
             </div>
diff --git a/packages/overlay/src/integrations/sentry/components/explore/traces/spans/SpanItem.tsx b/packages/overlay/src/integrations/sentry/components/explore/traces/spans/SpanItem.tsx
index f97e3488..28bb2903 100644
--- a/packages/overlay/src/integrations/sentry/components/explore/traces/spans/SpanItem.tsx
+++ b/packages/overlay/src/integrations/sentry/components/explore/traces/spans/SpanItem.tsx
@@ -3,7 +3,7 @@ import { Link, useParams } from 'react-router-dom';
 import { ReactComponent as ChevronIcon } from '~/assets/chevronDown.svg';
 import classNames from '../../../../../../lib/classNames';
 import type { Span, TraceContext } from '../../../../types';
-import { getDuration, getSpanDurationClassName } from '../../../../utils/duration';
+import { getSpanDurationClassName, getFormattedDuration } from '../../../../utils/duration';
 import PlatformIcon from '../../../PlatformIcon';
 import SpanResizer from '../../../SpanResizer';
 import SpanTree from './SpanTree';
@@ -37,7 +37,7 @@ const SpanItem = ({
   );
   const [isResizing, setIsResizing] = useState(false);
 
-  const spanDuration = getDuration(span.start_timestamp, span.timestamp);
+  const spanDuration = span.timestamp - span.start_timestamp;
 
   const handleResize = (e: MouseEvent) => {
     if (containerRef.current) {
@@ -117,7 +117,7 @@ const SpanItem = ({
             }}
           >
             <span className={classNames('whitespace-nowrap', getSpanDurationClassName(spanDuration))}>
-              {spanDuration.toLocaleString()} ms
+              {getFormattedDuration(spanDuration)}
             </span>
           </div>
         </div>
diff --git a/packages/overlay/src/integrations/sentry/utils/duration.ts b/packages/overlay/src/integrations/sentry/utils/duration.ts
index 1b400742..f0aead3a 100644
--- a/packages/overlay/src/integrations/sentry/utils/duration.ts
+++ b/packages/overlay/src/integrations/sentry/utils/duration.ts
@@ -1,27 +1,16 @@
-export const SECOND = 1000;
-export const MINUTE = 60000;
-export const HOUR = 3600000;
-export const DAY = 86400000;
-export const WEEK = 604800000;
-export const MONTH = 2629800000;
-export const YEAR = 31557600000;
-
 export const DURATION_LABELS = {
-  yr: 'yr',
-  mo: 'mo',
-  wk: 'wk',
-  d: 'd',
-  hr: 'hr',
-  min: 'min',
-  s: 's',
-  ms: 'ms',
+  31557600000: 'yr',
+  2629800000: 'mo',
+  604800000: 'wk',
+  86400000: 'd',
+  3600000: 'hr',
+  60000: 'min',
+  1000: 's',
 };
 
-export function getDuration(start: string | number, end: string | number) {
-  const startTs = typeof start === 'string' ? new Date(start).getTime() : start;
-  const endTs = typeof end === 'string' ? new Date(end).getTime() : end;
-  return Math.floor(endTs - startTs);
-}
+const DURATIONS = Object.keys(DURATION_LABELS)
+  .map(Number)
+  .sort((a, b) => b - a);
 
 export function getSpanDurationClassName(duration: number) {
   if (duration > 1000) return 'text-red-400';
@@ -30,49 +19,19 @@ export function getSpanDurationClassName(duration: number) {
 }
 
 export function getFormattedNumber(num: number, decimalPlaces: number = 2): string {
-  if (num % 1 !== 0 || (num % 1 === 0 && num.toString().includes('.'))) {
-    return num.toFixed(decimalPlaces);
-  } else {
-    return num.toFixed(0);
-  }
+  return num.toFixed(decimalPlaces).replace(/\.00$/, '');
 }
 
 export function getFormattedDuration(duration: number): string {
-  if (duration >= YEAR) {
-    const num = getFormattedNumber(duration / YEAR);
-    return `${num}${DURATION_LABELS.yr}`;
-  }
-
-  if (duration >= MONTH) {
-    const num = getFormattedNumber(duration / MONTH);
-    return `${num}${DURATION_LABELS.mo}`;
-  }
-
-  if (duration >= WEEK) {
-    const num = getFormattedNumber(duration / WEEK);
-    return `${num}${DURATION_LABELS.wk}`;
-  }
-
-  if (duration >= DAY) {
-    const num = getFormattedNumber(duration / DAY);
-    return `${num}${DURATION_LABELS.d}`;
-  }
-
-  if (duration >= HOUR) {
-    const num = getFormattedNumber(duration / HOUR);
-    return `${num}${DURATION_LABELS.hr}`;
-  }
-
-  if (duration >= MINUTE) {
-    const num = getFormattedNumber(duration / MINUTE);
-    return `${num}${DURATION_LABELS.min}`;
-  }
-
-  if (duration >= SECOND) {
-    const num = getFormattedNumber(duration / SECOND);
-    return `${num}${DURATION_LABELS.s}`;
+  for (const limit of DURATIONS) {
+    if (duration >= limit) {
+      const num = getFormattedNumber(duration / limit);
+      return `${num}${DURATION_LABELS[limit as keyof typeof DURATION_LABELS]}`;
+    }
   }
+  return `${getFormattedNumber(duration)}ms`;
+}
 
-  const num = getFormattedNumber(duration);
-  return `${num}${DURATION_LABELS.ms}`;
+export function getFormattedSpanDuration(span: { timestamp: number; start_timestamp: number }): string {
+  return getFormattedDuration(span.timestamp - span.start_timestamp);
 }