Worksitout is a small collection of free UK calculators for everyday money, property and DIY questions. Each tool is built around current UK rules and units — tax years, National Insurance, student loan plans, metres and kilogram bags — rather than generic global maths.
We keep the rates for each tax year in one place and update them when official figures change (usually every April). Sources are linked on every calculator page.
Results are estimates to help you plan. They are not personal financial, tax or legal advice.