Those wanting to know how much they need to be squirreling away need to 'take the age when they start putting money in their pension, halve it, and that's the percentage of their salary to aim to put into their pension for the rest of their working life for a strong retirement income'.
You can apply via Gov.uk if you've already claimed your State Pension, otherwise phone the Pension Service on 0800 99 1234 (or the Northern Ireland Pension Centre on 0808 100 6165).
The money saving expert urged state pensioners that they could be entitled to a £3,900 yearly boost from the Department for Work and Pensions (DWP) - though they must claim the cash themselves as it won't arrive automatically.
He added that it's always better to start saving earlier rather than later - and advised anyone who has received a salary increase to bump up their pension contribution before they can get used to the extra income.
To meet the criteria for the £3,900 payment, applicants must be single and have a total weekly income under £218 - though the ITV and BBC team said those receiving less than £235 could also get it.