Welcome to Helo Blod Using just a little bit of Cymraeg can make a big difference. Helo Blod is your fast and friendly Welsh translation and advice service. And it's free. Support and Translation – for free right now! Frequently Asked Questions Welsh Language Technology What is Helo Blod? Helo Blod is available online 24/7. We’re also available on the phone from 10.00am - 3.00pm every weekday. We welcome calls in Welsh. Currently, Helo Blod online is the fastest option.