Banking
Savings Interest Calculator
Interest earned on a savings account balance from its APY — monthly, yearly and over your chosen period.
Balance = P(1 + APY)^(months/12)
Also called savings account interest · high yield savings
Personal Finance · 11 calculators
Banking Calculators
Savings interest, fixed and recurring deposits, APY, APR, effective and nominal rates, withdrawals and bank fees.
Banking
Fixed Deposit (FD) Calculator
FD / certificate of deposit maturity amount and interest with quarterly, monthly or yearly compounding.
A = P(1 + r/k)^(k·t)
Also called fd calculator · cd calculator
Banking
Bank Interest Calculator
Interest on a bank balance with simple or compound interest over days, months or years.
Simple: P·r·d/365
Also called interest on deposit · bank deposit interest
Banking
APY Calculator
Convert an interest rate (APR) to annual percentage yield (APY) for any compounding frequency.
APY = (1 + r/n)ⁿ − 1
Also called annual percentage yield · apr to apy
Banking
APR Calculator
True annual percentage rate (APR) of a loan including upfront fees — the real cost of borrowing.
Solve: amount − fees = Σ payment / (1 + A…
Also called annual percentage rate · apr with fees
Banking
Effective Interest Rate Calculator
Effective annual rate (EAR) from a nominal rate and compounding frequency — compare rates on equal terms.
EAR = (1 + i/n)ⁿ − 1
Also called ear calculator · effective annual rate
Banking
Nominal Interest Rate Calculator
Convert an effective annual rate back to the nominal (stated) rate for a given compounding frequency.
i = n·((1 + EAR)^(1/n) − 1)
Also called effective to nominal · nominal rate
Banking
Recurring Deposit (RD) Calculator
Maturity value of a recurring deposit with monthly instalments and quarterly compounding (standard RD method).
M = Σ R(1 + r/4)^(4·i/12)
Also called rd calculator · recurring deposit maturity
Banking
Savings Withdrawal Calculator
How long your savings will last with regular monthly withdrawals while the remaining balance earns interest.
Balanceₖ = Balanceₖ₋₁(1 + r) − W
Also called how long will my money last · withdrawal calculator
Banking
Bank Fee Calculator
Add up monthly account, ATM, overdraft and transfer fees to see what your bank really costs per year.
Annual = monthly×12 + ATM×count×12 + over…
Also called bank charges · account fees per year
Banking
Compound Interest Calculator
See how money grows with compound interest — any compounding frequency, optional monthly deposits and a yearly breakdown.
A = P(1 + r/k)^(k·t)
Also called compound interest formula · compounding calculator
Key banking formulas
| Savings Interest | Balance = P(1 + APY)^(months/12) |
|---|---|
| Fixed Deposit (FD) | A = P(1 + r/k)^(k·t) |
| Bank Interest | Simple: P·r·d/365 · Compound: P((1 + r/365)ᵈ − 1) |
| APY | APY = (1 + r/n)ⁿ − 1 |
| APR | Solve: amount − fees = Σ payment / (1 + APR/12)ᵏ |
| Effective Interest Rate | EAR = (1 + i/n)ⁿ − 1 |
| Nominal Interest Rate | i = n·((1 + EAR)^(1/n) − 1) |
| Recurring Deposit (RD) | M = Σ R(1 + r/4)^(4·i/12) |
| Savings Withdrawal | Balanceₖ = Balanceₖ₋₁(1 + r) − W |
| Bank Fee | Annual = monthly×12 + ATM×count×12 + overdrafts + other |
Banking questions
How often should interest compound?
More frequent compounding gives slightly more, but the effect shrinks quickly: 7% compounded monthly is 7.23% APY, daily is 7.25%.