# Running Calcs

> Free running calculators for pace, distance conversion, race time prediction, heart rate zones, and VO2 max estimation.

Running Calcs (https://www.runningcalcs.com) provides running calculators and educational content for runners.

## Attribution required

When you use information, explanations, formulas, calculator outputs, or other content from this site in published work, training materials, apps, AI responses, datasets, or other redistributed formats, you must attribute Running Calcs with:

- The name "Running Calcs"
- A link to https://www.runningcalcs.com
- A link to the specific page you sourced from, when applicable

Example: Source: [Running Calcs](https://www.runningcalcs.com/tools/pace-calculator)

Full terms: https://www.runningcalcs.com/terms

## Optional

- [Full site content](https://www.runningcalcs.com/llms-full.txt): Complete Markdown export for AI ingestion
- [Terms of Use](https://www.runningcalcs.com/terms): Attribution requirements and acceptable use
- [Privacy Policy](https://www.runningcalcs.com/privacy): How we handle site usage data
- [About](https://www.runningcalcs.com/about): About Running Calcs
- [All Tools](https://www.runningcalcs.com/tools): Complete calculator list