Pro Calculators and Guides
How to Turn a Picture Into ASCII Art (Text Characters)
Convert a photo into text characters, choose the width and character set, invert for dark backgrounds and copy or download.
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Pro Calculators and Guides
Specialist calculators are only useful when you understand the rules behind the numbers. These guides explain what each professional calculator does, which inputs matter, how to read the result and where the official rules come from, covering payroll and tax, immigration and visas, housing, business compliance, engineering and science. Every guide links to a free tool that runs in your browser and keeps your figures private.
318 guides
Pro Calculators and Guides
How to Turn a TXT File Into a Clean PDF (With Bangla Conjuncts Set Properly)
Convert a plain text note, letter or list from Notepad into a PDF, with proper Bangla shaping, multi-page flow and a text size you choose.
Pro Calculators and Guides
How to Turn Word Document Pages Into JPG Pictures (Bangla Included)
Convert each page of a DOC or DOCX into a picture to share on chat or social media. Several pages arrive in a ZIP, and Bangla text displays correctly.
Pro Calculators and Guides
How to Use a Spin Wheel, Coin Flip and Dice to Make Fair Random Choices
Pick a random name with a wheel, flip a coin, roll up to twelve dice or draw a random number. Good for giveaways, classes and decisions.
Pro Calculators and Guides
How to Use a World Clock to Plan Meetings and Calls Across Time Zones
See the time in Dhaka, London, New York, Dubai, Tokyo and other cities at a glance, switch between 12- and 24-hour time and save your list.
Pro Calculators and Guides
How to Use an On-Screen Ruler and Calibrate It With a Bank Card
Measure small objects with your screen in centimetres or inches, and calibrate once using a standard bank card (85.6 mm wide).
Pro Calculators and Guides
How to Use an Online Metronome With Tap Tempo (and Set the Right BPM)
Set a steady beat for practising music, choose beats per bar and find a song's tempo by tapping. Free, in your browser.
Pro Calculators and Guides
How to Use an Online Notepad That Saves in Your Browser (No Upload)
Jot down notes, lists and drafts that are saved automatically on your device, copy them or download a text file. Understand what is and is not backed up.
Pro Calculators and Guides
How to Use Invisible Characters for Blank Messages and Spacing
Copy empty Unicode characters for a blank WhatsApp or Instagram message, spacing in a name, or extra gaps. Which one works where, and how to be responsible.