About Us

Last updated: June 2026

Welcome to proratacalculators.co.uk. We build free, easy-to-use pro rata calculators that help people in the UK work out proportional figures in seconds, whether that is a part-time salary, holiday entitlement or a part-month of rent.

What we do

Pay, holiday and rent are often quoted as full-time or full-period amounts, which leaves a lot of people guessing at what they will actually receive or owe. Our tools take the guesswork out of it. Enter a few figures and you get a clear, instant result, along with the working so you can see exactly how it was reached.

  • Pro rata salary calculator – convert a full-time salary into part-time pay.
  • Holiday entitlement calculator – work out statutory annual leave for any working pattern.
  • Rent calculator – split a month’s rent for the days actually occupied.
  • Custom mode – apply the same proportional logic to anything else.

Our approach to accuracy

We keep our figures current for the 2026/27 year and base our holiday and employment guidance on official GOV.UK sources. Our calculators give estimates for general guidance. They are not a substitute for professional financial, tax or legal advice, and you should always check your contract and payslip for exact figures.

Who is behind proratacalculators.co.uk

proratacalculators.co.uk is an independent website run by a small team with a background in web tools and online content. We built it because the existing options were either buried inside complex payroll software or too thin to be genuinely useful. Our aim is simple: clear answers, no sign-ups, no clutter.

Have feedback or spotted something that looks off? We would like to hear from you. Get in touch through our Contact page.

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