Understanding fd calculator
A cumulative fixed deposit retains interest inside the deposit until the modeled maturity. Quarterly and annual compounding can produce different totals for the same nominal rate. Confirm whether a quoted bank product pays interest out instead; a periodic payout should not be modeled as reinvested interest.
Formula and calculation method
FD maturity = principal × (1 + nominal annual rate / compounds per year)^(compounds per year × months/12).
Cumulative fixed deposit with regular compounding. Fractional compounding periods are modeled mathematically; banks may use a different broken-period day-count method. Tax and premature-withdrawal penalties are excluded.
How to use fd calculator
- Set Deposit amount. The example below uses 100000.
- Set Nominal annual deposit rate (%). The example below uses 7.
- Set Deposit duration (months). The example below uses 24.
- Set Compounds per year. The example below uses 4.
- Select Calculate to update the result. Reset restores the illustrated inputs. Copy, print or download your own result if you need a record.
Worked example
Example inputs
- Deposit amount
- 100000
- Nominal annual deposit rate (%)
- 7
- Deposit duration (months)
- 24
- Compounds per year
- 4
- FD maturity amount
- 114,888.17829559
- Interest earned
- 14,888.17829559
Factors affecting your result
Cumulative fixed deposit with regular compounding. Fractional compounding periods are modeled mathematically; banks may use a different broken-period day-count method. Tax and premature-withdrawal penalties are excluded.
Changing deposit amount changes the scenario being evaluated. Adjust one input at a time when comparing results, keep a copy of the assumptions, and compare values using the same unit and period. A precise arithmetic result does not make an uncertain assumption precise.
Frequently asked questions
How does the fd calculator work?
FD maturity = principal × (1 + nominal annual rate / compounds per year)^(compounds per year × months/12).
What inputs does FD Calculator need?
Enter deposit amount, nominal annual deposit rate (%), deposit duration (months), compounds per year. Read the unit labels; percentages are entered as ordinary percentages, not decimal fractions.
How should I interpret the fd calculator result?
Cumulative fixed deposit with regular compounding. Fractional compounding periods are modeled mathematically; banks may use a different broken-period day-count method. Tax and premature-withdrawal penalties are excluded.
Are my fd calculator inputs uploaded?
No. The calculation runs in this browser. Favorites, recent tool names, theme and formatting preferences may be saved locally, but calculation inputs are not sent to a calculation server or stored by this website. Shared links do not include entered values.
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