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Free calculators tool

Smart converter: type a value and get the answer

One box for units, currencies, colours, dates and number bases. Type 10 km, 100 usd, #ff0000 or 1700000000 and it works out the rest.

Free, no sign-up to use · what you type or add stays on your device · works offline · How it works

Examples:

Length

10 Kilometre (km) =

6.213711922 mi
Metre (m)
Centimetre (cm)
Millimetre (mm)
Yard (yd)
Foot (ft)
Inch (in)
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About this tool

You don't need to choose a tool or fill in menus. Type a value as you would say it, like 10 km, 5 feet to metres, 100 usd to brl, tomato, 0xff or 28/09/2026, and the converter shows the result and the other useful units. When something can mean two things, such as 100 cup (US cups or Cuban pesos), you see both. Click any value to copy it, or open the full tool for that conversion.

How to use it

  1. 1 Type or paste a value in the box. Add a unit or currency when it is a quantity, such as 10 km or 100 usd.
  2. 2 Add a target if you want a specific one: 10 km to m, 100 usd to brl.
  3. 3 Read the result. Click any value to copy it.
  4. 4 Use Open the full tool for tables, history, palettes and other details.

Frequently asked questions

What can I type?

Lengths, weights, temperatures, areas, volumes, speeds, data sizes, times, pressures and energy, with their names or symbols in English, Portuguese or Spanish. Also currency codes and symbols (100 usd, R$ 50), colours (#ff0000, rgb(255 0 0), tomato), Unix timestamps and dates (1700000000, 2026-09-28, 28/09/2026) and numbers in other bases (0xff, 0b101).

Is what I type sent anywhere?

No. The conversion happens in your browser and the value is not saved or sent. When you type a currency, the page downloads the day's exchange rate table from a public service, without your amount.

How are 1,234 and 1.234 read?

It follows the language of the page. In English 1,234 is one thousand two hundred and thirty-four, and in Portuguese or Spanish 1.234 is. The result repeats the number it understood, so you can check it.

Why do I see two results?

Because the text can mean two things: 5 libras is a weight and an amount in pounds sterling, and 1700000000 is a date and a plain number. Both are shown, and nothing is decided for you.

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