GES Gas Pipe Sizing Calculator

Size copper and steel pipes for natural gas and LPG in seconds — no flicking through charts mid-job. Free tool from the team behind Gas Engineer Software.

Quick gas pipe sizing for natural gas and LPG, on copper and steel pipework. Built for UK gas engineers who'd rather not be flicking through a sizing chart on the side of a job.

Enter your pipe details and gas rate, and the calculator works out the right size in seconds. Useful on quotes, on installs, on fault-finding visits — anywhere you'd normally reach for a chart.

WHAT IT DOES

• Sizes gas pipes for natural gas and LPG
• Works with copper and steel pipework
• Designed for UK domestic work
• Free to download, no signup required

WHY ENGINEERS LIKE IT

• No digging out paperwork in a customer's loft
• Faster than scrolling through a PDF chart or drawing diagrams by hand
• Clean enough to use in front of a customer
• Works on phone or tablet

GOOD FOR APPRENTICES AND ACS REVISION Studying for your ACS or working through your apprenticeship? Use it to sense-check your manual calculations and get a feel for how pipe length, fittings and gas rate affect sizing — before you're doing it for real on site.

WHO IT'S FOR

• Gas Safe registered engineers
• Heating and plumbing companies
• Gas installers working on natural gas or LPG
• Apprentices and trainees on ACS courses

A FREE TOOL FROM GAS ENGINEER SOFTWARE (GES) Built by the team behind Gas Engineer Software — the UK job-management app used by gas engineers, heating companies and plumbing firms to handle certificates, quotes, scheduling and invoicing. The Gas Pipe Sizing Calculator is a standalone tool — completely free.