Free tools for gas engineers.

Quick calculators for the van and the kitchen floor. No sign-up, nothing to install, and nothing you type leaves your phone.

Gas rate calculator

Metric or imperial meter to m³/h and kW gross and net, compared with the data plate.

The combustion ratio from your analyser readings, side by side with last year.

Whole-house heat loss in kW from size, age, walls, windows, loft and location. A starting point for boiler sizing.

Profit, margin and what each hour on site earns, before you send the quote.

Next year’s service date and a reminder ready for a text, WhatsApp or email.