What is Gauge Chart?

Gauge chart (speedometer-style) displays a single metric against defined thresholds using semi-circular arc with colored zones. Needle points to current value. Color zones indicate performance levels: red (poor), yellow (warning), green (good), blue (excellent). Shows percentage, score, or rating with visual at-a-glance status.

When Should You Use This?

Single KPI monitoring: health scores, performance ratings, capacity usage, satisfaction scores, completion percentage. Best for dashboards showing status against targets. Use when you need instant visual feedback on whether a metric is healthy. Alternative to KPI metric card when visual impact matters more than precision.

Common Mistakes to Avoid

• •No threshold zones—use color-coded arcs to show performance ranges
• •Missing value label—display exact number in center, not just needle
• •Wrong scale—match gauge range to realistic metric bounds (0-100% vs 0-5 stars)
• •Too many gauges—limit to 3-4 per dashboard to avoid clutter

Real-World Examples

• •NPS dashboard—customer satisfaction score (0-100) with red/yellow/green zones
• •Server monitoring—CPU usage gauge showing 75% with warning threshold
• •Fitness app—daily step goal progress (8,500 / 10,000 steps)