Measurements & Conversions

Hectares to Acres Calculator

Convert hectares to acres for US land descriptions, deeds and site comparisons.

  • Answers as you type
  • Every formula cited
  • Calculated in your browser
SettingsSettings for this calculationUS
Market
Imperial · sales tax
The land area in hectares.

One hectare is 2.471 acres. The common shorthand of two and a half acres runs about 1% high, which is immaterial in conversation and not in a deed.

Land area

12.36 acres

High confidence

1 ha = 2.4710538 acres. For deeds and transactions use the full factor — 1% of a large parcel is significant money.

Conversion factor applied
2.47 acres per ha
Then change the inputs to see how far the answer moves.

Show calculation logic

How this was calculated

Formula source(s)

  • 1 hectare = 10,000 m^2 = 2.4710538147 acres

Inputs used

Land area (ha)
5

Intermediate steps

Conversion factor applied
2.47 acres per ha
Final result12.36 acres

Confidence note: 1 ha = 2.4710538 acres. For deeds and transactions use the full factor — 1% of a large parcel is significant money.

Estimated cost — your price

This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.

Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.

Sources checked 2026-08-26 · in the site-wide review of 2026-09-06 · v1.0.0

Regulatory standards & verification citations1
  1. 1 hectare = 10,000 m^2 = 2.4710538147 acres
Cite this page

Your workspace

Most jobs need more than one number. Add the calculators you need next and they open right here, underneath this one — your figures stay on screen and nothing is lost to a page change.

Metric land descriptions being read against American conventions need this direction, most often when an overseas holding is being valued or compared. A hectare is 2.471 acres, and the widespread shorthand of two and a half is about one percent high — trivial in discussion and not trivial across a large parcel where a percent of the area is a percent of the value. Worth remembering too that converting an area does not convert a boundary description: a metric survey defines boundaries by distance and bearing, and only the original survey is authoritative for legal purposes. The converted acreage is for comparison, not for conveyancing.

How to calculate hectares to acres in 2 steps

  1. Land area (ha)The land area in hectares.
  2. Land areaThe tool computes the land area from those figures and shows the formula, its sources, and a confidence rating alongside it.

Hectares to Acres at common values

Page defaults, not your figures above.

Land area (ha)Land area (acres)
0.51.24
12.47
24.94
512.4
1024.7
2049.4
50124

Frequently asked questions

Is two and a half acres close enough?
For a conversation, yes — it runs about one percent high. For a deed, a sale or a planning submission, use the full 2.4710538 figure, since land is valuable enough that one percent is real money on any sizeable parcel.
Do surveys convert cleanly?
The area does, but boundary descriptions may not. A metric survey describes boundaries in metres and bearings, and converting the area alone does not reproduce those. For legal purposes the original survey governs.
What about square kilometres?
A square kilometre is a hundred hectares, so multiply by a hundred before converting. It is the unit used for larger holdings and regional planning, where hectares become unwieldy.
Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — a confirmed fix gets a permanent check of its own, so the same mistake cannot come back.