# Metrics

Defining the spacetime is about building a metric tensor. There are several methods to do this within Warp Factory. In this section, different examples of how to use standard metrics or build your own are provided.

<table><thead><tr><th width="269" data-type="content-ref">Example</th><th>Description</th></tr></thead><tbody><tr><td><a href="metrics/m1-first-metric">m1-first-metric</a></td><td>First time working with Warp Factory in making a basic Minkowski space and showing the metric tensor features. <strong>First-time users start here.</strong></td></tr><tr><td><a href="metrics/m2-default-metrics">m2-default-metrics</a></td><td>How to work with the library of metrics provided in Warp Factory.</td></tr><tr><td><a href="metrics/m3-building-a-metric">m3-building-a-metric</a></td><td>How to build your own metric using different helper functions in standard or 3+1 formalism.</td></tr></tbody></table>


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