Handy tools for the day job.
Small, free tools that do one thing well, no sign-up, no email, nothing stored. Everything runs in your browser.
Making Tax Digital readiness checker
See whether MTD for Income Tax applies to you, the date you are caught from, and your four quarterly deadlines. Download them straight to your calendar.
Open the tool →CP12 renewal date checker
Enter the last gas safety check date and see when the Landlord Gas Safety Record is due, plus the earliest you can renew and keep your annual date.
Open the tool →Flue gas ratio calculator
Enter CO (ppm) and CO₂ (%) to get the combustion ratio and check it against the BS 7967 action level of 0.0040.
Open the tool →Gas rate calculator
Enter a timed meter test and calorific value to get the gas rate (m³/h) and the gross and net heat input (kW).
Open the tool →These tools are for guidance and are free to use. Gas safety work must be carried out by an appropriately Gas Safe registered engineer.