Guides & tips
Productivity Guides
Guides to everyday productivity tools: QR codes, passwords and other small tools that save time. Guides cover QR codes, random pickers, invoices and other small everyday tasks. See all free productivity tools.Guides cover how to make an invoice, how to make a QR code that scans, average typing speed, picking a fair random winner and calculating hours worked, each linked to a free tool you can use straight away.
How to Calculate Hours Worked (With Breaks and Overtime)
Hours worked = finish time minus start time minus unpaid breaks. Worked examples, night shifts, decimal hours, overtime and pay.
How to Make an Invoice: What to Include (With a Free Template)
Everything a professional invoice needs, a worked example and tips to get paid faster — plus a free invoice generator that makes a PDF.
Average Typing Speed: What Is a Good WPM and How to Type Faster
What the average typing speed really is, what counts as a good WPM, how tests measure it and a simple plan to type faster.
How to Pick a Random Winner Fairly (Giveaways, Classrooms and Decisions)
A simple, fair way to pick a random winner for giveaways, raffles, classrooms and everyday decisions — with a free spin the wheel picker.
How to Make a QR Code for a Link, Wi-Fi or Business Card (Free QR Code Generator)
Create a QR code that scans first time: choose the right content type, size, contrast and error correction, and test it before you print.