Converters

Unit Converter

Convert length, weight, volume, area, and digital storage between two units. Kilobytes and kibibytes are both listed. The figure updates as you type.

Unit Converter

Convert length, weight, volume, area, and digital storage between two units.

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Five categories, two units, one number

Unit Converter multiplies one number by a fixed factor for the unit you pick and divides by the factor for the unit you want. The categories are Length, Weight / Mass, Volume, Area, and Digital Storage. The page opens on Length, with Metre (m) in From and Foot (ft) in To. The big figure updates as you type. Copy output copies a sentence that names both units. Temperature is not in the list.

How to convert a unit

1Pick a category. The buttons are Length, Weight / Mass, Volume, Area, and Digital Storage. Choosing a category sets From to the first unit in that list and To to the second. The number you already typed stays.
2Type in Value. Choose From and To. The result card appears when the value parses as a number. It shows the converted figure and the destination label. An empty box or a value that is not a number hides the card.
3Press Copy output for the sentence that includes the original value, both labels, and the figure. There is no download. Clearing Value hides the card but leaves the last sentence available to copy.

What it is good for

• Reading 1 metre as 3.280839895 feet without leaving the default menus.
• Comparing a kilobyte of 1,000 bytes with a kibibyte of 1,024 bytes.
• Switching from length to mass without retyping the number.

Example

Input

1, with Length, From Metre (m), and To Foot (ft)

Output

1 Metre (m) = 3.280839895 Foot (ft)

The large figure on the card is 3.280839895. The copied sentence adds both unit labels. 1 kilometre to metres is 1,000, with a thousands separator.

How a number moves between two units

Each unit has a factor that expresses it in a base for that category. The result is the typed number times the From factor, divided by the To factor. Length uses metres: millimetre 0.001, centimetre 0.01, metre 1, kilometre 1000, inch 0.0254, foot 0.3048, yard 0.9144, mile 1609.344, nautical mile 1852. One metre is therefore 1 divided by 0.3048 feet, printed as 3.280839895. Weight uses kilograms: milligram 0.000001, gram 0.001, kilogram 1, metric ton 1000, ounce 0.0283495, pound 0.453592, stone 6.35029. One kilogram is 2.20462442 pounds with those factors.

Volume uses litres, and the household units are US measures: millilitre 0.001, litre 1, cubic metre 1000, teaspoon 0.00492892, tablespoon 0.0147868, fluid ounce 0.0295735, cup 0.236588, pint 0.473176, quart 0.946353, gallon 3.78541. One litre is 0.2641721769 US gallons. Area uses square metres: square millimetre 0.000001, square centimetre 0.0001, square metre 1, square kilometre 1000000, hectare 10000, acre 4046.86, square foot 0.092903, square yard 0.836127, square mile 2590000. One square metre is 0.0001 hectares.

Digital storage uses bits. A bit is 1, a byte is 8, a kilobyte is 8000, a megabyte is 8000000, a gigabyte is 8000000000, and a terabyte is 8000000000000. A kibibyte is 8192, a mebibyte is 8388608, and a gibibyte is 8589934592. One kilobyte is 1,000 bytes. One kibibyte is 1,024 bytes. One megabyte is 976.5625 kibibytes. The page lists both families so a decimal kilobyte is not silently treated as 1024.

Category buttons and the two menus

Value is a number box. From and To are menus of the labels for the current category. The same unit on both sides returns the typed number, formatted. A leading minus is kept: negative two metres is -6.56167979 feet. A value the box accepts in scientific form, such as 1e3, is parsed as a normal number before the factors run. Zero prints as 0. A non-finite result prints as the infinity sign. Very small absolute values under one billionth, and absolute values of one quadrillion or more, switch to scientific form with six digits after the exponent marker. Other values use ten significant digits, trailing zeros are stripped, and the part before the decimal gains thousands separators.

Changing category does not try to keep a unit that does not exist in the new list. Length's metre cannot remain selected under Weight / Mass. The menus jump to the first and second entries, which for weight are milligram and gram. The typed number remains, so the card recalculates immediately if a number is present. There is no swap button. Choose the other menu when you want the reverse direction.

Jobs for a length, a mass, or a kilobyte

Use the length list for millimetres through nautical miles, the mass list when the ounce and stone factors above are acceptable, and the digital list when the question is bytes versus bits or decimal versus binary prefixes. A temperature in Celsius, Fahrenheit, or Kelvin is the temperature converter. This page has no degree scale. A number that only needs thousands separators or a currency format is the number formatter. The size of a pasted string in UTF-8 is the byte size calculator, which does not convert a megabyte into kibibytes.

An integer written in hex or binary, rather than a physical unit, is the number base converter. The factors on this page are not bases. Pasting FF here does not become a byte count.

Factors that are rounded, and scales that are absent

The ounce, pound, stone, acre, and US volume factors are the decimals stored in the page, not a longer official expansion. One kilogram prints as 2.20462442 pounds because the pound factor is 0.453592. A later digit you expected from a more precise pound will not appear. The square-mile factor is 2.59 million square metres. The page does not offer UK pints, a troy ounce, or a speed. If the unit is missing from the menus, it is not converted.

Nothing is stored for the next visit. Reload returns to Length, metre, and foot, with Value empty. Copy output is the sentence, for example 1 Metre (m) = 3.280839895 Foot (ft). It is not only the large figure. There is no download of a conversion table, and the page does not print every unit at once. Only the selected pair is calculated.

Rules and limitations

The result is value times the From factor divided by the To factor, in the base for that category: metres, kilograms, litres, square metres, or bits. Display uses ten significant digits, thousands separators, and scientific form at the extremes described above.

Category buttons reset From and To to the first two units of the new list and keep the typed number. Temperature is not a category. Copy output is the full sentence. The page does not save the last conversion.

Common problems

If the menus jumped to milligram and gram, a category button was pressed. Pick the units again. The number in Value is still there.

If a pound result looks short of a published conversion, the page used 0.453592 kilograms per pound. It will not use a longer factor.

Frequently asked questions

What is 1 metre in feet?

With From set to Metre (m) and To set to Foot (ft), 1 prints as 3.280839895. Copy output reads 1 Metre (m) = 3.280839895 Foot (ft).

Is a kilobyte 1024 bytes?

No. Kilobyte (KB) is 1,000 bytes. Kibibyte (KiB) is 1,024 bytes. Both are in Digital Storage. One megabyte is 976.5625 kibibytes.

Does it convert temperature?

No. Celsius, Fahrenheit, and Kelvin are on the temperature converter. This page has no degree category.

What does Copy output include?

The typed value, the From label, the formatted result, and the To label, in one sentence. The large figure on the card is only the result.

Is my input uploaded or saved?

This tool processes input in your browser and does not save its input or output to local storage. Copy and download are user actions. The site uses analytics for page and action metadata and may use ads and production error reporting; see the Privacy Policy for those services.

About this tool

Maintained by Toolbench. For large or deeply nested files, split the input into smaller batches and verify representative results before using them in an import or application. Report reproducible problems through Contact.

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