Fidamen

Convert Meters to Furlongs - Length Converter

This tool converts a length value in metres (meters) to furlongs. It is designed for users who need a fast, trustworthy numeric conversion with clarity on accuracy and regulatory context.

The conversion uses the internationally agreed definitions that relate imperial units to the SI metre. The result is suitable for general engineering, surveying, historical references, and educational use, with guidance on rounding and calibration for precision-critical workflows.

Updated Nov 8, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record ca84e96c1555 • Reviewed by Fidamen Standards Committee

Interactive converter unavailable for this calculator.

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Methodology

The conversion relies on the exact relationship between the yard and the metre (1 yard = 0.9144 m exactly) and the traditional definition of a furlong as 220 yards. Combining those definitions yields an exact factor for metres per furlong.

Where high-precision measurements are required, follow calibration and measurement traceability practices consistent with ISO/IEC 17025 and consult national metrology guidance from NIST. Floating-point rounding and display formatting are independent considerations handled in the user interface.

Key takeaways

Use the formula furlongs = metres / 201.168 for conversion; the factor is exact under international definitions.

For precision-critical work, combine this conversion with proper measurement practice, calibration traceability, and adherence to ISO/IEC 17025 and relevant national guidance.

Worked examples

Example 1: 201.168 metres → 201.168 / 201.168 = 1 furlong.

Example 2: 1000 metres → 1000 / 201.168 ≈ 4.9728 furlongs (rounded to four decimal places).

F.A.Q.

Is the conversion factor exact or approximate?

The factor 1 furlong = 201.168 metres is exact because it follows the exact international definition 1 yard = 0.9144 m and 1 furlong = 220 yards. Numerical results may be rounded for display.

How many decimal places should I use?

Choose precision based on use case. For general purposes 2 to 4 decimal places are common. For engineering or surveying, follow your project's required tolerance and calibration protocols; use more decimal places only if measurement uncertainty supports it.

Can I use these results for legal, safety, or certified measurement?

This converter provides the mathematical conversion. For certified or legally-binding measurements, use measurement equipment and calibration traceable to accredited laboratories and follow ISO/IEC 17025 and applicable national regulations.

Why might displayed results differ slightly from other calculators?

Differences arise from rounding rules, number of displayed significant digits, or floating-point implementation in the display layer. The underlying conversion factor is exact; display differences are cosmetic unless they exceed your tolerance.

Are there regional variants of the furlong?

The furlong used here follows the international/imperial definition of 220 yards. Historical or local usages may vary; verify historical sources when working with archival references.

Sources & citations

Further resources

Versioning & Change Control

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

Record ID: ca84e96c1555

What changed (latest)

v1.0.0 • 2025-11-08 • 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 8, 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 • 2025-11-08 • 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: 4d5b20124f2d