HAV exposure calculator
A hand-arm vibration exposure calculator — put in the tools and the time on them and see where the day lands. Guidance to help you think, not a reading off your own equipment.
Free tools · no sign-in
Free compliance tools
28 free tools that run in the browser with no sign-in, each at its own address: 25 site calculators that show their working, a HAV (hand-arm vibration) exposure calculator, a 6x6 risk-matrix calculator, and a 'what accreditation do I need?' checker. Guidance only - they make nobody compliant.
Free tool. Free, with no sign-in — the tools run entirely in your browser and nothing is sent anywhere. Where each of our products stands is stated plainly.
Twenty-eight tools, each at its own address
Small, self-contained calculators for construction and field trades. Each runs in the browser with no account and keeps nothing, and each has its own address that can be bookmarked or shared.
Risk-matrix calculator
A 6×6 likelihood-by-severity matrix, for putting a consistent number against a risk while you assess it.
"What accreditation do I need?" checker
A quick walk through the common construction accreditations to point you at the ones that tend to apply to work like yours — a starting point, not an answer.
25 site calculators that show their working
Brick, block and mortar, ready-mix and site-mixed concrete, screed, sub base, foundations, drainage, paving, roof area from pitch, slates and tiles, lead, joists, studwork, decking, plasterboard, tiling, insulation and paint — every line prints the sum that produced it, with unit switching and editable rates. Open the calculators →
What they are not
Guidance only
They make nobody compliant and they are not a substitute for a competent person's assessment. A calculator is a way of thinking a problem through, not a determination that the problem is solved.
They keep nothing
Everything happens in your browser. Nothing you type is sent to us or stored anywhere, which is also why there is no account to make.
Guides
Plain explanations of the paperwork you get asked for, written from the schemes' own published criteria. No sign-up, nothing gated.
- How to pass a CHAS assessment — what SSIP means, the document list, what it costs, and the five reasons small firms get bounced.
- RAMS explained — what a risk assessment and method statement must contain, and what a main contractor checks first.
Every guide names its sources and the date they were read. All guides.