Fidamen

Convert Square Meters to Hectares - Area Converter

Convert area measured in square metres (m²) to hectares (ha) using the internationally accepted relationship that 1 hectare equals 10,000 square metres.

This converter is intended for quick unit conversions used in planning, reporting, land management and engineering. For legal or cadastral surveys use certified survey data and follow local regulatory rounding rules.

Updated Nov 2, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record ccc69be6e252 • Reviewed by Fidamen Standards Committee

Interactive Converter

Convert between square meter and hectare with precision rounding.

Quick reference table

Square MeterHectare
1 m²0.0001 ha
5 m²0.0005 ha
10 m²0.001 ha
25 m²0.0025 ha
50 m²0.005 ha
100 m²0.01 ha

Methodology

The conversion is a fixed ratio based on the definition of a hectare: 1 ha = 10,000 m². This is an internationally standardized relationship used by measurement authorities including national metrology institutes and the Bureau International des Poids et Mesures (BIPM).

For display and reporting we recommend choosing a precision that matches your use case: coarse planning (two significant figures), engineering (three to four significant figures), and legal/cadastral (follow the precision required by your land registry or surveyor).

Key takeaways

Conversion between square metres and hectares is a simple fixed-ratio operation: divide square metres by 10,000 to get hectares.

Use appropriate rounding and report measurement uncertainty when converting survey or instrument data; for legal or cadastral matters rely on certified surveys and local authorities.

Worked examples

100 m² = 0.01 ha

1,000 m² = 0.1 ha

10,000 m² = 1 ha

50,000 m² = 5 ha

F.A.Q.

What is the exact relationship between square metres and hectares?

Exactly 1 hectare equals 10,000 square metres. This is a defined unit relationship used by international measurement authorities.

How many decimal places should I show?

Choose precision by use case: planning/estimates 2 decimal places, engineering/design 3–4 decimal places, and legal/cadastral follow your jurisdiction or surveyor requirements. When in doubt, keep raw values and document rounding rules.

Is a hectare an SI unit?

The hectare is a non-SI metric unit accepted for use with the SI. The SI base unit for area is the square metre; the hectare is defined as 10,000 square metres and is widely used in land measurement.

Can I use this converter for legal land transfers or cadastral records?

This tool provides unit conversions only and is not a substitute for a certified survey. For legal transactions rely on certified survey measurements, official cadastral records, and the rounding/measurement conventions required by the relevant land registry or authority.

How does this relate to acres?

To convert hectares to acres, use the relationship 1 hectare ≈ 2.47105381 acres. That conversion is separate from m²↔ha but can be obtained by chaining conversions: m² → ha → acres, or via published factors from measurement authorities.

What about measurement uncertainty from instruments?

Instrument and survey uncertainty should be tracked and reported separately from unit conversion. When converting reported measurements, do not imply better precision than the original instrument or survey permits—propagate uncertainty and round accordingly.

Where can I find authoritative references for these definitions?

Authoritative definitions and unit relationships are published by international and national metrology organizations and by land and agricultural agencies; refer to sources such as BIPM and NIST for definitions and guidance.

Sources & citations

Further resources

Versioning & Change Control

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

Record ID: ccc69be6e252

What changed (latest)

v1.0.0 • 2025-11-02 • 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 2, 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 • 2025-11-02 • 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: 79e00ccd5d9a