Pension Calculator

Use this free pension calculator to estimate annual pension, monthly pension, and salary replacement rate from final average salary, years of service, and benefit multiplier.

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Formula steps Estimate limits shown Examples included Private history

Final average salary ($)Years of serviceBenefit multiplier (%)

Estimated monthly pension$2,500.00

1.5% x 25 years x $80,000

Estimated annual pension: $30,000.00
Replacement rate: 37.5%
Years of service: 25 years

Check the real plan document for vesting, service credit, survivor benefit, COLA, and tax rules.

Formula steps

Multiply final average salary by years of service.
Multiply that result by the benefit multiplier percentage.
Divide the estimated annual pension by 12 for a monthly estimate.
Compare annual pension with final average salary for replacement rate.

How to use the pension calculator

Enter the requested dollar amounts, rates, terms, tax settings, or contribution details.
Use rates as percentages, such as 6.5 for 6.5%, and check whether a field asks for a monthly or annual amount.
Press the calculate button to see the answer, supporting metrics, and formula steps.
Use the result as a planning estimate only, then copy it if the assumptions look right.

Common uses

Estimate a defined-benefit pension from a simple salary-service formula.

Convert an annual pension estimate into a monthly amount.

Compare how years of service and multiplier affect the estimate.

Check replacement rate before reading the official plan document.

Examples

Public plan style $80,000 final salary, 25 years, 1.5% multiplier

$30,000/year or $2,500/month

Long service $95,000, 32 years, 1.7%

Higher replacement-rate estimate

Shorter career $65,000, 15 years, 1.25%

Lower pension estimate

Frequently asked questions

Plain-language answers about when to use the estimate, what your numbers mean, what is left out, and how privacy works.

When should I use the Pension Calculator?

Use it for early planning and side-by-side comparisons, especially for tasks like these: Estimate a defined-benefit pension from a simple salary-service formula. Convert an annual pension estimate into a monthly amount. Treat the answer as a planning estimate, not a final quote.

What is the Pension Calculator doing with my numbers?

In plain language: The calculator multiplies final average salary by years of service and the benefit multiplier, then divides the annual pension by 12 for a monthly estimate. If the result seems too high or too low, first check whether each field expects a monthly amount, annual amount, dollar value, or percent.

What does this estimate leave out?

This is not a plan benefit statement. It does not include vesting, service-credit rules, survivor options, cost-of-living adjustments, early retirement reductions, taxes, or plan-specific formulas. Real finance decisions can also depend on fees, timing, local rules, credit details, and provider-specific terms.

Does the site save my finance inputs?

No. The calculator runs in your browser tab. Recent answers stay only on the page while you use it, and they are not sent to a server.