Fidamen

Convert Liters to Cubic Inches - Volume Converter

This converter transforms a volume value expressed in liters (L) to cubic inches (in³) using the exact SI-based relationship between the units. One liter is defined as one cubic decimeter (1 L = 1 dm³), and the cubic inch is the volume of a cube with sides of one inch.

Use this tool for engineering, laboratory, shipping, or everyday tasks that require converting between metric and US customary volumetric units. The result is suitable for unit conversion tasks; where regulatory compliance or calibration is required, follow the referenced standards and workplace calibration procedures.

Results are computed using the internationally recognized constants and are presented with guidance on rounding and accuracy to help you choose an appropriate number of significant digits for your use case.

Updated Nov 20, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record db9dd3fce66d • Reviewed by Fidamen Standards Committee

Interactive Converter

Convert between liter and cubic inch with precision rounding.

Quick reference table

LiterCubic Inch
1 L61.02361 in³
5 L305.11805 in³
10 L610.2361 in³
25 L1,525.590251 in³
50 L3,051.180502 in³
100 L6,102.361003 in³

Methodology

The conversion relies on fixed geometric definitions and internationally maintained constants: 1 liter = 1 cubic decimeter and 1 inch = 0.0254 meters exactly. From these base definitions the cubic inch to liter factor is derived with high precision.

Computations follow standard floating-point arithmetic conventions. For traceable measurement work, consult calibration procedures and uncertainty evaluation recommended by national metrology institutes and ISO guidelines.

When high precision is required, use the full conversion constant and document rounding rules and the associated measurement uncertainty in accordance with ISO and NIST guidance.

Key takeaways

Multiply liters by 61.0237440947323 to obtain cubic inches. Use the reverse factor 0.016387064 to convert cubic inches to liters.

For metrology or regulatory use, follow the cited NIST, ISO, IEEE, and OSHA guidance for calibration, rounding, and uncertainty reporting.

Worked examples

5 L × 61.0237440947323 = 305.1187204736615 in³ (report as 305.12 in³ for 2 decimal places).

0.75 L × 61.0237440947323 = 45.7678080710497 in³ (report as 45.768 in³ for 3 decimal places).

100 in³ × 0.016387064 = 1.6387064 L (report as 1.638706 L if full precision is needed).

F.A.Q.

What is the exact conversion factor between liters and cubic inches?

1 liter = 61.0237440947323 cubic inches (derived from exact definition 1 inch = 0.0254 m and 1 L = 0.001 m^3). For many applications it is acceptable to use 61.0237441.

How many significant digits should I use?

Choose significant digits based on the measurement uncertainty of your input. For everyday use 3 to 6 significant digits are common. For calibrated instruments and legal metrology follow ISO 17025 and NIST guidelines for reporting uncertainty and significant figures.

Is the liter an SI base unit?

The liter is a non-SI unit accepted for use with the SI and is defined as 1 cubic decimeter (1 L = 1 dm³). See SI documentation for details.

Are there differences between US and imperial definitions affecting this conversion?

No. The liter and the cubic inch are defined from metric and inch exact definitions used here; the conversion factor is independent of gallon system differences. Ensure you are converting volumes and not temperature-specific volumes or volumetric flows where other factors apply.

What should I do if I need traceable measurements or calibration?

Use calibrated instruments traceable to national standards, document calibration certificates, and follow uncertainty evaluation procedures from NIST and ISO (for example ISO/IEC 17025 and the Guide to the Expression of Uncertainty in Measurement).

Sources & citations

Further resources

Versioning & Change Control

Audit record (versions, QA runs, reviewer sign-off, and evidence).

Record ID: db9dd3fce66d

What changed (latest)

v1.0.0 • 2025-11-20 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Public QA status

PASS — golden 25 + edge 120

Last run: 2026-01-23 • Run: golden-edge-2026-01-23

Engine

v1.0.0

Data

Baseline (no external datasets)

Content

v1.0.0

UI

v1.0.0

Governance

Last updated: Nov 20, 2025

Reviewed by: Fidamen Standards Committee (Review board)

Credentials: Internal QA

Risk level: low

Reviewer profile (entity)

Fidamen Standards Committee

Review board

Internal QA

Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person

Semantic versioning

  • MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
  • MINOR: New features or fields that do not change existing outputs for the same inputs.
  • PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.

Review protocol

  • Verify formulas and unit definitions against primary standards or datasets.
  • Run golden-case regression suite and edge-case suite.
  • Record reviewer sign-off with credentials and scope.
  • Document assumptions, limitations, and jurisdiction applicability.

Assumptions & limitations

  • Uses exact unit definitions from the Fidamen conversion library.
  • Internal calculations use double precision; display rounding follows the unit's configured decimal places.
  • Not a substitute for calibrated instruments in regulated contexts.
  • Jurisdiction-specific rules may require official guidance.

Change log

v1.0.0 • 2025-11-20 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: a0328cf0cc1b