---
title: InfluxDB guides
description: '<li><a href="/influxdb/v1/guides/calculate_percentages/" target="">Calculate percentages in a query</a> </li> <li><a href="/influxdb/v1/guides/downsample_and_retain/" target="">Downsample and retain data</a> </li> <li><a href="/influxdb/v1/guides/hardware_sizing/" target="">Hardware sizing guidelines</a> </li> <li><a href="/influxdb/v1/guides/migrate-to-enterprise/" target="">Migrate from InfluxDB OSS to InfluxDB Enterprise</a> </li> <li><a href="/influxdb/v1/guides/query_data/" target="">Query '
url: https://docs.influxdata.com/influxdb/v1/guides/
estimated_tokens: 225
product: InfluxDB OSS v1
version: v1
---

# InfluxDB guides

This page documents an earlier version of InfluxDB OSS. [InfluxDB 3 Core](/influxdb3/core/) is the latest stable version.

-   [Calculate percentages in a query](/influxdb/v1/guides/calculate_percentages/)
-   [Downsample and retain data](/influxdb/v1/guides/downsample_and_retain/)
-   [Hardware sizing guidelines](/influxdb/v1/guides/hardware_sizing/)
-   [Migrate from InfluxDB OSS to InfluxDB Enterprise](/influxdb/v1/guides/migrate-to-enterprise/)
-   [Query data with the InfluxDB API](/influxdb/v1/guides/query_data/)
-   [Write data with the InfluxDB API](/influxdb/v1/guides/write_data/)