Category · Unit Hub

Volume Converters

Every volume unit in one place — 64 units, 1,098 conversions, grouped by family with a live calculator on the right. Use the popular shortcuts and matrix below for the most common pairs, or scroll the directory to find any unit and its full set of conversions.

Written by Sunith Babu L, Ph.D., Lead Engineer Reviewed by Girish V Kulkarni Ph.D.
Volume category hub 64 units · 1,098 conversions Published Last reviewed Updated

Conversion matrix

The 10 most-used area units, every pair as a clickable link.

About area measurement

Volume is a fundamental geometric quantity equal to length squared. Every volume unit is derived from a corresponding length unit by squaring it — a square meter is the area of a square one meter on each side; an acre originated as the area a yoke of oxen could plow in a day, standardized in 1959 as exactly 4,046.8564224 square meters. In the International System of Units (SI), the square meter (m²) is the standard unit of area, with the hectare (10,000 m²) widely used for land measurement worldwide except in the United States, which uses the acre.

India's area landscape is uniquely diverse, with regional traditional units coexisting alongside metric and imperial standards. The bigha is the most prominent example — it has six distinct standardized values depending on the state (UP, Bihar, West Bengal, Gujarat, Rajasthan, Assam), all listed in our directory. Similarly, the cent (South India, 1/100 acre), guntha (Maharashtra/Karnataka, 1/40 acre), kanal and marla (Punjab) remain the primary units in regional real estate. Modern Indian land records typically cite both the traditional unit and its metric equivalent. The directory below covers all 73 area units this site supports, from the subatomic shed (10⁻⁵² m²) to the township (93.24 km²).

All area units

Tap any unit to expand its full list of outgoing conversions. Units are grouped by family.

Metric / SI · 15 units · 349 conversions

Centiliter (cL) — 25 conversions
Cubic Centimeter (cm³) — 24 conversions
Cubic Decimeter (dm³) — 24 conversions
Cubic Kilometer (km³) — 6 conversions
Cubic Meter (m³) — 61 conversions
Cubic Millimeter (mm³) — 6 conversions
Deciliter (dL) — 25 conversions
Dekaliter (daL) — 6 conversions
Hectoliter (hL) — 25 conversions
Kiloliter (kL) — 5 conversions
Liter (L) — 62 conversions
Microliter (µL) — 6 conversions
Milliliter (mL) — 62 conversions
Nanoliter (nL) — 6 conversions
Picoliter (pL) — 6 conversions

US Customary (Liquid) · 15 units · 280 conversions

Tun (tun) — 6 conversions
US Cup (cup) — 25 conversions
US Dessertspoon (dsp) — 6 conversions
US Fluid Dram (fl dr) — 6 conversions
US Fluid Ounce (fl oz) — 25 conversions
US Gallon (gal) — 63 conversions
US Gill (gi) — 6 conversions
US Hogshead (hhd) — 6 conversions
US Liquid Barrel (bbl) — 6 conversions
US Minim (min) — 6 conversions
US Oil Barrel (bbl (oil)) — 25 conversions
US Pint (pt) — 25 conversions
US Quart (qt) — 25 conversions
US Tablespoon (tbsp) — 25 conversions
US Teaspoon (tsp) — 25 conversions

Imperial (UK) · 14 units · 198 conversions

Imperial Barrel (bbl) — 6 conversions
Imperial Bushel (bu) — 6 conversions
Imperial Cup (cup) — 6 conversions
Imperial Dessertspoon (dsp) — 6 conversions
Imperial Fluid Drachm (fl dr) — 6 conversions
Imperial Fluid Ounce (fl oz) — 25 conversions
Imperial Gallon (gal) — 63 conversions
Imperial Gill (gi) — 6 conversions
Imperial Minim (min) — 6 conversions
Imperial Peck (pk) — 6 conversions
Imperial Pint (pt) — 25 conversions
Imperial Quart (qt) — 25 conversions
Imperial Tablespoon (tbsp) — 6 conversions
Imperial Teaspoon (tsp) — 6 conversions

Cubic (length-derived) · 4 units · 119 conversions

Cubic Foot (ft³) — 63 conversions
Cubic Inch (in³) — 25 conversions
Cubic Mile (mi³) — 6 conversions
Cubic Yard (yd³) — 25 conversions

Cooking / Culinary · 5 units · 87 conversions

Drop (gtt) — 6 conversions
Metric Cup (cup) — 25 conversions
Metric Dessertspoon (dsp) — 6 conversions
Metric Tablespoon (tbsp) — 25 conversions
Metric Teaspoon (tsp) — 25 conversions

Frequently asked questions

What is the SI unit of area?

The square meter (m²). It is defined as the area of a square with sides of one meter. The hectare (10,000 m²) is also widely used for land measurement.

How many square feet are in one acre?

1 acre = 43,560 square feet exactly. This is defined by the 1959 International Yard and Pound Agreement, which set 1 foot = 0.3048 m and 1 acre = 4,840 sq yd.

What is one bigha in square feet?

It depends on the state. The pucca bigha (UP, Bihar) = 32,558 sq ft. The Bengal bigha = 14,400 sq ft. The Gujarat/Rajasthan bigha = 17,424 sq ft. Always confirm which regional definition applies to your land record.

How many square meters are in one hectare?

1 hectare = 10,000 square meters exactly = 100 ares = 2.47105 acres.

What is one cent of land?

1 cent = 1/100 acre = 40.4686 m² = 435.6 sq ft. The cent is the primary residential land unit in Kerala, Tamil Nadu, and Sri Lanka. In Bengal and Bangladesh, the same unit is called "decimal".

How precise are the conversions on this site?

All factors are stored exactly per BIPM/NIST/regional standards definitions. Indian regional units (bigha, katha) are flagged as approximate where their definitions vary by district. Displayed results are rounded only at the final step.

Source & reference

Definitions and conversion factors on this page follow the BIPM — International System of Units and the NIST guide to the SI. Imperial-to-metric conversions use the 1959 International Yard and Pound Agreement (1 yd = 0.9144 m exactly). Historical and ancient unit values follow standard reference works in metrology and archaeology.