Pension Calculator

A workplace pension accumulates contributions from both employee and employer over a working career, invested for long-term growth. Auto-enrolment (mandatory since 2012) means most UK workers contribute to a pension automatically

The calculator uses the standard published formula for pension calc. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, British pounds, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Future value: FV = Existing balance × (1+r)^n + Monthly contribution × ((1+r)^n − 1)/r. Each step in the calculation is shown so you can verify the result manually.