diff --git a/routes/_components/compose/ComposeBox.html b/routes/_components/compose/ComposeBox.html
index 103c918..13bb87c 100644
--- a/routes/_components/compose/ComposeBox.html
+++ b/routes/_components/compose/ComposeBox.html
@@ -109,7 +109,7 @@
   import ComposeMedia from './ComposeMedia.html'
   import ComposeContentWarning from './ComposeContentWarning.html'
   import { measureText } from '../../_utils/measureText'
-  import { CHAR_LIMIT, POST_PRIVACY_OPTIONS } from '../../_static/statuses'
+  import { POST_PRIVACY_OPTIONS } from '../../_static/statuses'
   import { store } from '../../_store/store'
   import { slide } from 'svelte-transitions'
   import { postStatus, insertHandleForReply, setReplySpoiler, setReplyVisibility } from '../../_actions/compose'
@@ -183,7 +183,7 @@
       length: ({ textLength, contentWarningLength, contentWarningShown }) => (
         textLength + (contentWarningShown ? contentWarningLength : 0)
       ),
-      overLimit: ({ length }) => length > CHAR_LIMIT,
+      overLimit: ({ length, $maxStatusChars }) => length > $maxStatusChars,
       contentWarningShown: ({ composeData }) => composeData.contentWarningShown,
       contentWarning: ({ composeData }) => composeData.contentWarning || '',
       timelineInitialized: ({ $timelineInitialized }) => $timelineInitialized,
diff --git a/routes/_components/compose/ComposeLengthGauge.html b/routes/_components/compose/ComposeLengthGauge.html
index fc8e122..bd75eb4 100644
--- a/routes/_components/compose/ComposeLengthGauge.html
+++ b/routes/_components/compose/ComposeLengthGauge.html
@@ -18,7 +18,6 @@
   }
 </style>
 <script>
-  import { CHAR_LIMIT } from '../../_static/statuses'
   import { mark, stop } from '../../_utils/marks'
   import { store } from '../../_store/store'
   import { scheduleIdleTask } from '../../_utils/scheduleIdleTask'
@@ -45,9 +44,9 @@
     }),
     store: () => store,
     computed: {
-      lengthAsFraction: ({ length }) => {
+      lengthAsFraction: ({ length, $maxStatusChars }) => {
         // We don't need to update the gauge for every decimal point, so round it to the nearest 0.02
-        let int = Math.round(Math.min(CHAR_LIMIT, length) / CHAR_LIMIT * 100)
+        let int = Math.round(Math.min($maxStatusChars, length) / $maxStatusChars * 100)
         return (int - (int % 2)) / 100
       }
     },
diff --git a/routes/_components/compose/ComposeLengthIndicator.html b/routes/_components/compose/ComposeLengthIndicator.html
index 204a0cc..7856b9d 100644
--- a/routes/_components/compose/ComposeLengthIndicator.html
+++ b/routes/_components/compose/ComposeLengthIndicator.html
@@ -16,7 +16,6 @@
   }
 </style>
 <script>
-  import { CHAR_LIMIT } from '../../_static/statuses'
   import { mark, stop } from '../../_utils/marks'
   import { store } from '../../_store/store'
   import { scheduleIdleTask } from '../../_utils/scheduleIdleTask'
@@ -41,7 +40,7 @@
     }),
     store: () => store,
     computed: {
-      lengthToDisplay: ({ length }) => CHAR_LIMIT - length,
+      lengthToDisplay: ({ length, $maxStatusChars }) => $maxStatusChars - length,
       lengthLabel: ({ overLimit, lengthToDisplayDeferred }) => {
         if (overLimit) {
           return `${lengthToDisplayDeferred} characters over limit`
diff --git a/routes/_static/statuses.js b/routes/_static/statuses.js
index 749ff32..6202279 100644
--- a/routes/_static/statuses.js
+++ b/routes/_static/statuses.js
@@ -1,5 +1,3 @@
-export const CHAR_LIMIT = 500
-
 export const POST_PRIVACY_OPTIONS = [
   {
     label: 'Public',
diff --git a/routes/_store/computations/instanceComputations.js b/routes/_store/computations/instanceComputations.js
index e7eb3c1..dd3c618 100644
--- a/routes/_store/computations/instanceComputations.js
+++ b/routes/_store/computations/instanceComputations.js
@@ -47,4 +47,13 @@ export function instanceComputations (store) {
     ['currentInstanceData'],
     (currentInstanceData) => currentInstanceData && currentInstanceData.access_token
   )
+
+  store.compute(
+    'maxStatusChars',
+    ['currentInstanceInfo'],
+    (currentInstanceInfo) => (
+      // unofficial api used in glitch-soc and pleroma
+      (currentInstanceInfo && currentInstanceInfo.max_toot_chars) || 500
+    )
+  )
 }