# US pints to Liters (pt to L)

> Convert US pints to liters: 1 pt = 0.473176 L. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

- Page id: `pints-to-liters` · Quantity: Volume (`volume`, base unit L) · Tool: `convert_units`
- Canonical page: https://tttkmbb.com/conversion/pints-to-liters · This document: https://tttkmbb.com/conversion/pints-to-liters.md · JSON: https://tttkmbb.com/conversion/pints-to-liters.json (add `?value=` for a result)

## Formula

- `1 pt = 0.473176 L`
- `liters = US pints × 0.473176473`
- Reverse: `US pints = liters × 2.113376419`

The factor follows from the SI definitions of both units (NIST SP 811); values below are rounded to 6 significant figures, the API returns up to 12.

## Worked examples

- 5 pt = 2.36588 L
- 12.5 pt = 5.91471 L
- 100 pt = 47.3176 L

## Conversion table

| US pints (pt) | Liters (L) |
| --- | --- |
| 1 | 0.473176 |
| 2 | 0.946353 |
| 3 | 1.41953 |
| 4 | 1.89271 |
| 5 | 2.36588 |
| 6 | 2.83906 |
| 7 | 3.31224 |
| 8 | 3.78541 |
| 9 | 4.25859 |
| 10 | 4.73176 |
| 15 | 7.09765 |
| 20 | 9.46353 |
| 25 | 11.8294 |
| 30 | 14.1953 |
| 40 | 18.9271 |
| 50 | 23.6588 |
| 75 | 35.4882 |
| 100 | 47.3176 |
| 200 | 94.6353 |
| 250 | 118.294 |
| 500 | 236.588 |
| 1000 | 473.176 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=pint_us&to_unit=L` → unified JSON envelope with `result.values.result`, `formula`, `factor`, `sources`, `freshness`
- MCP: server `https://tttkmbb.com/mcp`, tool `convert_units` with `{"value":5,"from_unit":"pint_us","to_unit":"L"}`
- All volume units: https://tttkmbb.com/api/v1/units?quantity=volume · full converter: [Volume Converter](https://tttkmbb.com/conversion/volume.md)
- Authentication: none. Freshness: `static` (fixed conversion factors).

## FAQ

**How many liters are in one pint?**

1 pt = 0.473176 L. The factor comes from the SI definitions of both units (NIST SP 811 / BIPM), so it is exact or correct to at least 10 significant figures.

**What is the formula to convert US pints to liters?**

Multiply the value in US pints by 0.473176473: liters = US pints × 0.473176473. For example, 5 pt = 2.36588 L.

**How do I convert liters back to US pints?**

Multiply by the inverse factor 2.113376419 (US pints = liters × 2.113376419), or use the liters-to-US pints page.

## Related conversions

- [Liters to US pints](https://tttkmbb.com/conversion/liters-to-pints.md) (reverse)
- [Liters to US gallons](https://tttkmbb.com/conversion/liters-to-gallons.md)
- [US gallons to Liters](https://tttkmbb.com/conversion/gallons-to-liters.md)
- [Milliliters to US fluid ounces](https://tttkmbb.com/conversion/ml-to-fl-oz.md)
- [US fluid ounces to Milliliters](https://tttkmbb.com/conversion/fl-oz-to-ml.md)
- [Liters to Milliliters](https://tttkmbb.com/conversion/liters-to-ml.md)
- [Milliliters to Liters](https://tttkmbb.com/conversion/ml-to-liters.md)
- [US cups to Milliliters](https://tttkmbb.com/conversion/cups-to-ml.md)
- [Milliliters to US cups](https://tttkmbb.com/conversion/ml-to-cups.md)

## Data Sources

- NIST Special Publication 811 – Guide for the Use of the International System of Units (SI), Appendix B conversion factors — https://www.nist.gov/pml/special-publication-811 (standard, retrieved 2026-09-24)
- BIPM – The International System of Units (SI Brochure, 9th edition) — https://www.bipm.org/en/publications/si-brochure (standard, retrieved 2026-09-24)
- Wikipedia – Conversion of units — https://en.wikipedia.org/wiki/Conversion_of_units (reference, retrieved 2026-09-24)