diff --git a/zenno/src/routes/race/CalcInfo.svelte b/zenno/src/routes/race/CalcInfo.svelte
new file mode 100644
index 0000000..deb7094
--- /dev/null
+++ b/zenno/src/routes/race/CalcInfo.svelte
@@ -0,0 +1,32 @@
+<script lang="ts">
+	import type { Snippet } from 'svelte';
+	import type { ClassValue } from 'svelte/elements';
+
+	interface Props {
+		title: Snippet | string;
+		children: Snippet;
+		additional?: Snippet;
+		class?: ClassValue | null;
+	}
+
+	let { title, children, additional, class: className }: Props = $props();
+
+	const cl = $derived([
+		'm-2 flex flex-col rounded-md border p-2 text-center shadow-sm transition-shadow hover:shadow-md',
+		className,
+	]);
+</script>
+
+<div class={cl}>
+	<span class="block">
+		{#if typeof title === 'string'}
+			{title}
+		{:else}
+			{@render title()}
+		{/if}
+	</span>
+	<span class="block text-xl">
+		{@render children()}
+	</span>
+	{@render additional?.()}
+</div>
diff --git a/zenno/src/routes/race/gate/+page.svelte b/zenno/src/routes/race/gate/+page.svelte
index 5620ba4..74ef6af 100644
--- a/zenno/src/routes/race/gate/+page.svelte
+++ b/zenno/src/routes/race/gate/+page.svelte
@@ -3,6 +3,7 @@
 	import * as race from '$lib/race';
 	import * as accel from '$lib/racelib/accel';
 	import type { Attachment } from 'svelte/attachments';
+	import CalcInfo from '../CalcInfo.svelte';
 
 	let rawPower = $state(1200);
 	let rawGuts = $state(1200);
@@ -284,14 +285,13 @@
 </form>
 
 {#snippet info(name: string, unit: string, val: number, val2?: number)}
-	<div class="m-2 max-w-72 flex-1 flex-col rounded-md border p-2 text-center shadow-sm transition-shadow hover:shadow-md">
-		<span class="block">{name}</span>
+	<CalcInfo title={name} class="max-w-72 flex-1">
 		{#if val2 == null}
 			<span class="block text-xl">{val.toFixed(3)} {unit}</span>
 		{:else}
 			<span class="block text-xl">{val.toFixed(3)} &ndash; {val2.toFixed(3)} {unit}</span>
 		{/if}
-	</div>
+	</CalcInfo>
 {/snippet}
 
 <div class="mx-auto flex w-full flex-col place-items-center md:flex-row md:justify-center">
diff --git a/zenno/src/routes/race/mspeed/SpeedDur.svelte b/zenno/src/routes/race/mspeed/SpeedDur.svelte
index a8e2e4f..5356bd7 100644
--- a/zenno/src/routes/race/mspeed/SpeedDur.svelte
+++ b/zenno/src/routes/race/mspeed/SpeedDur.svelte
@@ -1,6 +1,7 @@
 <script lang="ts">
 	import { HORSE_LENGTH, speedGain } from '$lib/race';
 	import type { Snippet } from 'svelte';
+	import CalcInfo from '../CalcInfo.svelte';
 
 	interface Props {
 		children: Snippet;
@@ -21,13 +22,12 @@
 	const text = $derived(gain.map(fmtp).join(' – '));
 </script>
 
-<div
-	class="m-2 flex h-full w-full max-w-80 flex-1 flex-col rounded-md border p-2 text-center shadow-sm transition-shadow hover:shadow-md"
->
-	<div class="block">{@render children()}</div>
-	<span class="block text-xl">{text} L</span>
-	<div class="flex flex-row">
-		<span class="flex-1 text-xs">{fmtp(speed)} m/s</span>
-		<span class="flex-1 text-xs">{dur.toFixed(3)} s</span>
-	</div>
-</div>
+<CalcInfo title={children} class="max-w-80 flex-1">
+	{text} L
+	{#snippet additional()}
+		<div class="flex flex-row">
+			<span class="flex-1 text-xs">{fmtp(speed)} m/s</span>
+			<span class="flex-1 text-xs">{dur.toFixed(3)} s</span>
+		</div>
+	{/snippet}
+</CalcInfo>
diff --git a/zenno/src/routes/race/spurt/+page.svelte b/zenno/src/routes/race/spurt/+page.svelte
index 15d6aef..ad6e47c 100644
--- a/zenno/src/routes/race/spurt/+page.svelte
+++ b/zenno/src/routes/race/spurt/+page.svelte
@@ -2,6 +2,7 @@
 	import type { ComputedSeries } from '$lib/chart';
 	import { AptitudeLevel, inverseSpurtSpeed, RunningStyle, spurtSpeed, Stat } from '$lib/race';
 	import StatChart from '$lib/StatChart.svelte';
+	import CalcInfo from '../CalcInfo.svelte';
 
 	const aptsList = Object.entries(AptitudeLevel).filter(([, val]) => typeof val === 'number');
 	const stylesList = [
@@ -93,9 +94,7 @@
 		<input type="checkbox" id="isCareer" role="switch" bind:checked={isCareer} class="min-h-6 min-w-6 align-middle" />
 	</div>
 </div>
-<span class="mt-8 block w-full text-center text-lg">
-	Target spurt speed: {speed.toFixed(3)} m/s
-</span>
+<CalcInfo title="Target Spurt Speed" class="mx-auto mt-8 max-w-md">{speed.toFixed(3)} m/s</CalcInfo>
 {#each [[AptitudeLevel.A, aProf] as const, [AptitudeLevel.S, sProf] as const] as [level, inv] (level)}
 	<div class="mx-auto max-w-3xl">
 		<span class="mt-8 block w-full">
@@ -103,14 +102,7 @@
 		</span>
 		<div class="flex flex-col md:flex-row">
 			{#each stylesList as [styleName, s] (s)}
-				<div
-					class={['m-2 flex-1 rounded-md border shadow-sm transition-shadow hover:shadow-md', s === style ? 'border-2' : null]}
-				>
-					<div class="h-full w-full flex-col text-center">
-						<span class="block text-lg">{styleName}</span>
-						<span class="block text-2xl">{inv[s]}</span>
-					</div>
-				</div>
+				<CalcInfo title={styleName} class={['flex-1', { 'border-2': s === style }]}>{inv[s]}</CalcInfo>
 			{/each}
 		</div>
 	</div>
@@ -127,12 +119,7 @@
 	</span>
 	<div class="flex flex-col md:flex-row">
 		{#each skillProf as [v, inv] (v)}
-			<div class="m-2 flex-1 rounded-md border shadow-sm transition-shadow hover:shadow-md">
-				<div class="h-full w-full flex-col text-center">
-					<span class="block text-lg">+{v.toFixed(2)}</span>
-					<span class="block text-2xl">{inv}</span>
-				</div>
-			</div>
+			<CalcInfo title={`+${v.toFixed(2)}`} class="flex-1">{inv}</CalcInfo>
 		{/each}
 	</div>
 </div>