Big Number Card
A Home Assistant Lovelace card for displaying sensor values as large numbers with configurable severity-based backgrounds.
What is Big Number Card?
Big number card is a custom Lovelace card for Home Assistant that displays sensor values as large, prominent numbers on dashboards. It solves the problem of making sensor data quickly readable at a distance by providing clear visualizations with configurable severity levels that change background colors based on value thresholds.
Home Assistant users and dashboard designers who want to create more visually informative and immediately understandable sensor displays for their smart home interfaces.
Developers choose this card for its simplicity and visual effectiveness—it transforms numeric sensor data into intuitive, color-coded displays without complex configuration, while offering flexibility through severity thresholds, progress bars, and custom styling options.
Overview
Big number card is a custom Lovelace card for Home Assistant that displays sensor values as prominent, easy-to-read numbers. It enhances dashboard visualization by allowing users to quickly assess sensor states through color-coded severity levels and optional progress bars.
Key Features
- Large Number Display — Shows sensor values in a clear, oversized font for quick readability
- Severity-Based Backgrounds — Changes card background color based on configurable value thresholds
- Progress Bar Visualization — Optional bar display that fills based on defined minimum and maximum values
- Customizable Styling — Supports custom colors, scaling, and integration with card-mod for advanced CSS
- None Value Handling — Special configuration options for displaying and styling offline or unavailable sensors
- Flexible Value Sources — Can display either entity states or specific attributes from Home Assistant entities
Philosophy
The card prioritizes clarity and immediate visual feedback, transforming raw sensor data into intuitive dashboard elements that communicate status at a glance.
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