See how lunch-length changes affect finish times and weekly paid hours. This is a free calculator built for quick repeat checks on mobile and desktop.
People use this when a lunch change sounds small but could materially shift finish time, weekly presence, or the feel of the whole day. In the UK, pay planning usually works best when you separate gross hours from payroll rules such as overtime premiums, holiday pay treatment, rounding policies, and employer cut-off dates.
A lunch break that is mathematically shorter is not always better if it makes the day less sustainable. Treat the result as a planning estimate first and then compare it with the rate, enhancement, and pay-period rules in your contract or payroll system.
UK guidance on this page is a practical planning layer, not legal advice. If the answer affects pay, dismissal, leave entitlement, or a formal workplace process, verify it against the contract, policy, collective rule, or official guidance that applies to your role.