Available Slot
NetGrow

APY Calculator

Convert nominal APR to APY (effective annual yield) with compounding frequency. Optional: project ending balance and interest over time.

Use the APY Calculator

Enter nominal APR and compounding frequency. APY is calculated. Optionally add starting balance and time for ending balance and interest.

Inputs

Nominal APR and compounding frequency. Optional: balance and time.

Results

APY (effective annual rate)
5.12%
Ending balance
$10,512
Total interest
$512

APY = (1 + APR/n)^n - 1. Ending balance uses the same rate over the time period.

How this calculator works

Enter nominal APR (%) and compounding frequency (daily, monthly, quarterly, annually). APY is computed as (1 + APR/n)^n - 1. If you enter starting balance and years, ending balance and total interest are also shown.

How to interpret your results

APY is the rate to use when comparing offers. A 5% APR compounded monthly has a higher APY than 5% compounded annually. Ending balance shows what you would have if the rate stayed constant.

Common mistakes to avoid

Comparing APR across different compounding frequencies without converting to APY; ignoring fees or minimums; or assuming the rate is locked for the full period when it is not.

FAQs

What is APY?▾
APY (annual percentage yield) is the effective annual rate after compounding. APY = (1 + APR/n)^n - 1, where n is compounding frequency per year.
Which inputs matter most?▾
Nominal APR and compounding frequency. More compounding (e.g. daily vs annually) raises APY slightly. Optional balance and time affect ending balance only.
What assumptions does this calculator make?▾
Interest is compounded at the chosen frequency. No contributions or withdrawals; optional projection assumes constant rate and compounding.
How accurate are the results?▾
The APY formula is standard. Ending balance is exact for the inputs. Real accounts may have rate changes, fees, or different compounding methods.
Can I use this for planning decisions?▾
Yes. Use APY to compare savings or deposit products. Use ending balance to project growth for a given rate and time.

Related tools

Browse all calculators on NetGrow.

NetGrow

APY Calculator

Convert nominal APR to APY (effective annual yield) with compounding frequency. Optional: project ending balance and interest over time.

Use the APY Calculator

Enter nominal APR and compounding frequency. APY is calculated. Optionally add starting balance and time for ending balance and interest.

Inputs

Nominal APR and compounding frequency. Optional: balance and time.

Results

APY (effective annual rate)
5.12%
Ending balance
$10,512
Total interest
$512

APY = (1 + APR/n)^n - 1. Ending balance uses the same rate over the time period.

How this calculator works

Enter nominal APR (%) and compounding frequency (daily, monthly, quarterly, annually). APY is computed as (1 + APR/n)^n - 1. If you enter starting balance and years, ending balance and total interest are also shown.

How to interpret your results

APY is the rate to use when comparing offers. A 5% APR compounded monthly has a higher APY than 5% compounded annually. Ending balance shows what you would have if the rate stayed constant.

Common mistakes to avoid

Comparing APR across different compounding frequencies without converting to APY; ignoring fees or minimums; or assuming the rate is locked for the full period when it is not.

FAQs

What is APY?▾
APY (annual percentage yield) is the effective annual rate after compounding. APY = (1 + APR/n)^n - 1, where n is compounding frequency per year.
Which inputs matter most?▾
Nominal APR and compounding frequency. More compounding (e.g. daily vs annually) raises APY slightly. Optional balance and time affect ending balance only.
What assumptions does this calculator make?▾
Interest is compounded at the chosen frequency. No contributions or withdrawals; optional projection assumes constant rate and compounding.
How accurate are the results?▾
The APY formula is standard. Ending balance is exact for the inputs. Real accounts may have rate changes, fees, or different compounding methods.
Can I use this for planning decisions?▾
Yes. Use APY to compare savings or deposit products. Use ending balance to project growth for a given rate and time.

Related tools

Browse all calculators on NetGrow.