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Sync settings

Choose what your account keeps in step on every device where you are signed in.

  • My tools

    Always synced: the tools on your board, their order and size.

  • The windows open on your start page, including what you typed in them.

  • Every note in the notepad – on the notepad page, on your board and in windows.

  • Every list of website shortcuts – on the shortcuts page, on your board and in windows.

  • Every grid in the cover grid maker – on its page, on your board and in windows.

  • Every list of bookmarked organisations in the OIN lookup – on its page, on your board and in windows.

  • Keeps your pipeline and saved recipes on all your devices. Your files are never synced – only the steps and settings.

Turning something off removes it from your account straight away. Your devices keep their own copy.

Notifications

Tools that can tell you about something new while a Synsi tab is open, even when you are in another tab or app. Choose them for this browser.

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Notifications are blocked for this site. Allow them in your browser’s site settings (the icon left of the address), then switch them on here.

  • Says “New message” while a Synsi tab is open – never who wrote it or what.

Your choice is stored in this browser only. Notifications never show personal content such as a message or a number. They work while a Synsi tab is open; closed tabs get none.

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Convert Centimetres to Inches (cm to in)

Convert centimetres to inches instantly – one centimetre is 0.3937 inches.

My tools →
Result –

Runs in your browser – your data never leaves your device Also available via our free API

Conversion table: Centimetres (cm) to Inches (in)

Centimetres (cm) Inches (in)
1 0.3937
2 0.7874
3 1.1811
5 1.9685
10 3.937
15 5.9055
20 7.874
25 9.8425
50 19.685
75 29.5276
100 39.3701
250 98.4252
500 196.8504
1,000 393.7008

How to use the Centimetres to Inches

  1. 1 Choose a category, such as length or temperature.
  2. 2 Enter the value and pick the unit to convert from and to.
  3. 3 Read the result; use the ⇄ button to swap the units.

Formula

inches = centimetres ÷ 2.54

Because an inch is defined as exactly 2.54 cm, dividing by 2.54 gives an exact result. For a quick estimate, multiply by 0.4: 30 cm is roughly 12 inches (exactly 11.81).

When you need it

Screen sizes, clothing measurements, picture frames and furniture from the US and UK are usually given in inches, while most of the world measures in centimetres. A TV with a 55-inch diagonal, for example, is about 140 cm.

Frequently asked questions

How many inches is 1 cm?

1 cm is 0.393701 inches.

How many inches is 30 cm?

30 cm is 11.81 inches – just under one foot.

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