diff --git a/src/apex-layouts.ts b/src/apex-layouts.ts
index 225d273..d6e35df 100644
--- a/src/apex-layouts.ts
+++ b/src/apex-layouts.ts
@@ -10,7 +10,7 @@ import {
   TIMESERIES_TYPES,
 } from './const';
 import { ChartCardConfig } from './types';
-import { computeName, computeUom, is12Hour, mergeDeep, prettyPrintTime } from './utils';
+import { computeName, computeUom, is12Hour, mergeDeep, prettyPrintTime, truncateFloat } from './utils';
 import { layoutMinimal } from './layouts/minimal';
 import * as ca from 'apexcharts/dist/locales/ca.json';
 import * as cs from 'apexcharts/dist/locales/cs.json';
@@ -248,17 +248,8 @@ function getXTooltipFormatter(config: ChartCardConfig, lang: string): ((val: num
 
 function getYTooltipFormatter(config: ChartCardConfig, hass: HomeAssistant | undefined) {
   return function (value, opts, conf = config, hass2 = hass) {
-    if (
-      value !== null &&
-      typeof value === 'number' &&
-      !Number.isInteger(value) &&
-      !conf.series_in_graph[opts.seriesIndex]?.show.as_duration
-    ) {
-      value = (value as number).toFixed(
-        conf.series_in_graph[opts.seriesIndex].float_precision === undefined
-          ? DEFAULT_FLOAT_PRECISION
-          : conf.series_in_graph[opts.seriesIndex].float_precision,
-      );
+    if (!conf.series_in_graph[opts.seriesIndex]?.show.as_duration) {
+      value = truncateFloat(value, conf.series_in_graph[opts.seriesIndex].float_precision);
     }
     const uom = computeUom(
       opts.seriesIndex,
@@ -276,18 +267,13 @@ function getYTooltipFormatter(config: ChartCardConfig, hass: HomeAssistant | und
 function getDataLabelsFormatter(config: ChartCardConfig) {
   return function (value, opts, conf = config) {
     if (conf.series_in_graph[opts.seriesIndex].show.datalabels === 'total') {
-      return opts.w.globals.stackedSeriesTotals[opts.dataPointIndex];
-    }
-    if (value === null) return;
-    let lValue = value;
-    if (lValue !== null && typeof lValue === 'number' && !Number.isInteger(lValue)) {
-      lValue = (lValue as number).toFixed(
-        conf.series_in_graph[opts.seriesIndex].float_precision === undefined
-          ? DEFAULT_FLOAT_PRECISION
-          : conf.series_in_graph[opts.seriesIndex].float_precision,
+      return truncateFloat(
+        opts.w.globals.stackedSeriesTotals[opts.dataPointIndex],
+        conf.series_in_graph[opts.seriesIndex].float_precision,
       );
     }
-    return lValue;
+    if (value === null) return;
+    return truncateFloat(value, conf.series_in_graph[opts.seriesIndex].float_precision);
   };
 }
 
@@ -317,17 +303,8 @@ function getLegendFormatter(config: ChartCardConfig, hass: HomeAssistant | undef
       let value = TIMESERIES_TYPES.includes(config.chart_type)
         ? opts.w.globals.series[opts.seriesIndex].slice(-1)[0]
         : opts.w.globals.series[opts.seriesIndex];
-      if (
-        value !== null &&
-        typeof value === 'number' &&
-        !Number.isInteger(value) &&
-        !conf.series_in_graph[opts.seriesIndex]?.show.as_duration
-      ) {
-        value = (value as number).toFixed(
-          conf.series_in_graph[opts.seriesIndex].float_precision === undefined
-            ? DEFAULT_FLOAT_PRECISION
-            : conf.series_in_graph[opts.seriesIndex].float_precision,
-        );
+      if (!conf.series_in_graph[opts.seriesIndex]?.show.as_duration) {
+        value = truncateFloat(value, conf.series_in_graph[opts.seriesIndex].float_precision);
       }
       const uom = computeUom(
         opts.seriesIndex,
diff --git a/src/apexcharts-card.ts b/src/apexcharts-card.ts
index c6fcafb..bb569c8 100644
--- a/src/apexcharts-card.ts
+++ b/src/apexcharts-card.ts
@@ -20,6 +20,7 @@ import {
   mergeDeepConfig,
   offsetData,
   prettyPrintTime,
+  truncateFloat,
   validateInterval,
   validateOffset,
 } from './utils';
@@ -722,15 +723,7 @@ class ChartsCard extends LitElement {
   }
 
   private _computeLastState(value: number | null, index: number): string | number | null {
-    if (value !== null && typeof value === 'number' && !Number.isInteger(value)) {
-      const precision =
-        this._config?.series[index].float_precision === undefined
-          ? DEFAULT_FLOAT_PRECISION
-          : // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-            this._config.series[index].float_precision!;
-      return (value as number).toFixed(precision);
-    }
-    return value;
+    return truncateFloat(value, this._config?.series[index].float_precision);
   }
 
   /*
diff --git a/src/utils.ts b/src/utils.ts
index 2adedc4..954ab9e 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -4,7 +4,7 @@ import { EntityCachePoints } from './types';
 import { TinyColor } from '@ctrl/tinycolor';
 import parse from 'parse-duration';
 import { ChartCardExternalConfig, ChartCardPrettyTime, ChartCardSeriesExternalConfig } from './types-config';
-import { DEFAULT_MAX, DEFAULT_MIN, moment, NO_VALUE } from './const';
+import { DEFAULT_FLOAT_PRECISION, DEFAULT_MAX, DEFAULT_MIN, moment, NO_VALUE } from './const';
 import { LovelaceConfig } from 'custom-card-helpers';
 
 export function compress(data: unknown): string {
@@ -235,3 +235,11 @@ export function mergeDeepConfig(target: any, source: any): any {
 export function is12Hour(locale: string): boolean {
   return !(new Date(2021, 1, 1, 15, 0, 0, 0).toLocaleTimeString(locale).indexOf('15') > -1);
 }
+
+export function truncateFloat(value: number | null, precision: number | undefined): string | number | null {
+  let lValue: string | number | null = value;
+  if (value !== null && typeof value === 'number' && !Number.isInteger(value)) {
+    lValue = (lValue as number).toFixed(precision === undefined ? DEFAULT_FLOAT_PRECISION : precision);
+  }
+  return lValue;
+}