Free calculators and tools

Every free tool on Braindumps, in one place. There is nothing to install and nothing to sign up for: they all work in your browser, on a phone or a computer. Several of them also give you the code to put the tool on your own website.

Money and travel

Journey cost calculator

What a car journey costs in petrol, diesel or electricity, one way or return, and split between passengers, at current UK prices.

VAT calculator

Add VAT to a price or take it off, at 20%, 5% or any rate. It shows the price without VAT, the VAT and the total. For the maths behind it, read how to take VAT off a price.

3D printing

3D print cost calculator

The real cost of a print in the UK: filament, electricity, wear on the printer and failed prints, with the maths shown.

Home and kitchen

Celsius to Fahrenheit converter

Convert either way as you type, with the formula, full charts and UK oven gas marks.

Web and phones

QR code generator

Free QR codes for links, Wi-Fi, email, phone numbers and texts, as PNG or SVG files. The codes are static, so they never expire.

Retro computing and gaming

Commodore 64 emulator

A working Commodore 64 in your browser, with BASIC, a library of programs, an on-screen keyboard and joysticks. To put one on your own website, follow how to embed a Commodore 64 emulator.

PAL NES games list

Every NES game released in the UK, Europe and Australia, with release years, PAL-A and PAL-B regions and product codes. Search and filter the list, and tick off the games you own.

New tools appear in the Tools section as they are added.