opensearch-docs-cn/_query-dsl/aggregations/metric/index.md

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---
layout: default
title: Metric aggregations
parent: Aggregations
has_children: true
has_toc: true
nav_order: 2
redirect_from:
- /opensearch/metric-agg/
- /query-dsl/aggregations/metric-agg/
- /aggregations/metric-agg/
---
# Metric aggregations
Metric aggregations let you perform simple calculations such as finding the minimum, maximum, and average values of a field.
## Types of metric aggregations
Metric aggregations are of two types: single-value metric aggregations and multi-value metric aggregations.
### Single-value metric aggregations
Single-value metric aggregations return a single metric. For example, `sum`, `min`, `max`, `avg`, `cardinality`, and `value_count`.
### Multi-value metric aggregations
Multi-value metric aggregations return more than one metric. For example, `stats`, `extended_stats`, `matrix_stats`, `percentile`, `percentile_ranks`, `geo_bound`, `top_hits`, and `scripted_metric`.