# Kilograms per liter to Pounds per cubic foot (kg/L to lb/ft³)

> Convert kilograms per liter to pounds per cubic foot: 1 kg/L = 62.428 lb/ft³. Exact conversion factor, formula, 22-row table and worked examples, with JSON API and MCP access.

- Page id: `kg-per-liter-to-lb-per-ft3` · Quantity: Density (`density`, base unit kg/m3) · Tool: `convert_units`
- Canonical page: https://tttkmbb.com/conversion/kg-per-liter-to-lb-per-ft3 · This document: https://tttkmbb.com/conversion/kg-per-liter-to-lb-per-ft3.md · JSON: https://tttkmbb.com/conversion/kg-per-liter-to-lb-per-ft3.json (add `?value=` for a result)

## Formula

- `1 kg/L = 62.428 lb/ft³`
- `pounds per cubic foot = kilograms per liter × 62.42796058`
- Reverse: `kilograms per liter = pounds per cubic foot × 0.01601846337`

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 kg/L = 312.14 lb/ft³
- 12.5 kg/L = 780.35 lb/ft³
- 100 kg/L = 6242.8 lb/ft³

## Conversion table

| Kilograms per liter (kg/L) | Pounds per cubic foot (lb/ft³) |
| --- | --- |
| 1 | 62.428 |
| 2 | 124.856 |
| 3 | 187.284 |
| 4 | 249.712 |
| 5 | 312.14 |
| 6 | 374.568 |
| 7 | 436.996 |
| 8 | 499.424 |
| 9 | 561.852 |
| 10 | 624.28 |
| 15 | 936.419 |
| 20 | 1248.56 |
| 25 | 1560.7 |
| 30 | 1872.84 |
| 40 | 2497.12 |
| 50 | 3121.4 |
| 75 | 4682.1 |
| 100 | 6242.8 |
| 200 | 12485.6 |
| 250 | 15607 |
| 500 | 31214 |
| 1000 | 62428 |

## API

- `GET https://tttkmbb.com/api/v1/convert?value=5&from_unit=kg%2FL&to_unit=lb%2Fft3` → 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":"kg/L","to_unit":"lb/ft3"}`
- All density units: https://tttkmbb.com/api/v1/units?quantity=density · full converter: [Density Converter](https://tttkmbb.com/conversion/density.md)
- Authentication: none. Freshness: `static` (fixed conversion factors).

## FAQ

**How many pounds per cubic foot are in one kilogram per liter?**

1 kg/L = 62.428 lb/ft³. 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 kilograms per liter to pounds per cubic foot?**

Multiply the value in kilograms per liter by 62.42796058: pounds per cubic foot = kilograms per liter × 62.42796058. For example, 5 kg/L = 312.14 lb/ft³.

**How do I convert pounds per cubic foot back to kilograms per liter?**

Multiply by the inverse factor 0.01601846337 (kilograms per liter = pounds per cubic foot × 0.01601846337), or use the pounds per cubic foot-to-kilograms per liter page.

## Related conversions

- [Pounds per cubic foot to kilograms per liter](https://tttkmbb.com/conversion/lb-per-ft3-to-kg-per-liter.md) (reverse)
- [Kilograms per cubic meter to Grams per cubic centimeter](https://tttkmbb.com/conversion/kg-per-m3-to-g-per-cm3.md)
- [Grams per cubic centimeter to Kilograms per cubic meter](https://tttkmbb.com/conversion/g-per-cm3-to-kg-per-m3.md)
- [Kilograms per cubic meter to Pounds per cubic foot](https://tttkmbb.com/conversion/kg-per-m3-to-lb-per-ft3.md)
- [Pounds per cubic foot to Kilograms per cubic meter](https://tttkmbb.com/conversion/lb-per-ft3-to-kg-per-m3.md)
- [Grams per milliliter to Kilograms per cubic meter](https://tttkmbb.com/conversion/g-per-ml-to-kg-per-m3.md)
- [Kilograms per cubic meter to Grams per milliliter](https://tttkmbb.com/conversion/kg-per-m3-to-g-per-ml.md)
- [Pounds per US gallon to Kilograms per liter](https://tttkmbb.com/conversion/lb-per-gallon-to-kg-per-liter.md)
- [Kilograms per liter to Pounds per US gallon](https://tttkmbb.com/conversion/kg-per-liter-to-lb-per-gallon.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)