Tools

Free calculators for people on the tools.

The sums a trade does on the back of a van door, done properly and with the source underneath. No sign-up, no email gate. Every one of them can be embedded on your own site.

Ventilation and MVHR installers

Part F ventilation rates

Extract and whole-dwelling rates for a house or flat

Open

Subcontractors

CIS deduction

What a subcontractor gets paid after the CIS deduction

Open

Heating engineers

Radiator size

Watts and BTU for a room, first pass

Open

Sole traders

Day rate

What to charge per day to take home what you need

Open

Owners deciding whether a site is worth it

Website ROI

How long a website takes to pay for itself

Open

Ventilation and MVHR installers

Duct sizing

Round spiral duct size from airflow and velocity

Open

For your own site

Embed any of them. Free, one line of code.

A calculator keeps people on a page and gives them a reason to come back. Each tool has an embed code under it: paste it into your site and it works, with a small credit line to us. No account, no tracking inside the frame.

Want one in your brand, with your prices?

An estimate calculator that quotes your services and sends you the lead is a different thing from a free tool. We build those too.

Conversion widgets