m²↔Tsubo↔Tatami↔m↔mm Converter + Quick Tafla

Q: "Why do I need to enter tatami dimensions?"

"Tatami size differs by region and property type. Using explicit dimensions prevents hidden definition mismatches."

Q: "Which definition is used for tsubo?"

"This verkfæri uses 1 tsubo = 400/121 m² (about 3.305785 m²)."

Q: "Can I print the quick tafla?"

"Yes. You can choose A4 or Letter and portrait or landscape, then print or save as PDF."

Q: "What is restored from a shared URL?"

"Mode, value, unit, Japanese unit toggle, tatami size, and quick tafla settings are restored."

Q: "Is my conversion data sent to a server?"

"No. Conversion and tafla generation run entirely in your browser."

Calculations are always done in SI units (m / m²), and major units are shown together.

Tatami conversion uses explicit dimensions (m×m), so definition differences stay visible.

Single inntak, simultaneous úttaks

Generate fixed-decimal quick taflas

State-preserving shareable URL

What this verkfæri covers

Switch between Length and Area and see key units at the same time.
In Area mode, tsubo and tatami appear only when Japanese units are enabled.
Tatami values are computed from your long/short edge inntaks, so the basis is explicit.
Quick taflas support A4/Letter printing, PDF save, and CSV export.

How to use

Select Length or Area, then enter one value and its inntak unit.
If you use Japanese units in Area mode, confirm or enter tatami dimensions.
Copy any niðurstaða value in one click from the unit cards.
Set range, step, fixed decimals, rounding, and paper format to generate the tafla.

Sample

Area conversion (m² → tsubo / tatami)

Inntak

mode=area, value=35, unit=m², japan=ON, tatami=0.88 × 1.76

Úttak

35 m² = 10.5873 tsubo = 22.5981 tatami

Length conversion (m → mm / ft / yd)

Inntak

mode=length, value=12.5, unit=m

Úttak

12.5 m = 12500 mm = 41.0105 ft = 13.6702 yd

Formulas

SI value = inntak value × (inntak-to-SI factor)
Úttak value = SI value ÷ (úttak-to-SI factor)
1 tsubo = 400 / 121 m²
1 tatami = long edge (m) × short edge (m)

Athugasemdir

Tatami dimensions vary. This page converts using the tatami size you enter.
Displayed rounded values can differ from internal calculation precision.
For legal or contractual use, always follow the definition stated in the contract.

Algengar spurningar

Why do I need to enter tatami dimensions?

Tatami size differs by region and property type. Using explicit dimensions prevents hidden definition mismatches.

Which definition is used for tsubo?

This verkfæri uses 1 tsubo = 400/121 m² (about 3.305785 m²).

Can I print the quick tafla?

Yes. You can choose A4 or Letter and portrait or landscape, then print or save as PDF.

What is restored from a shared URL?

Mode, value, unit, Japanese unit toggle, tatami size, and quick tafla settings are restored.

Is my conversion data sent to a server?

No. Conversion and tafla generation run entirely in your browser.