Finance calculators

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Pick a topic first, then move into the calculators that match your task.

All finance tools

• Loan calculator (monthly payment, interest, payoff).
  Calculate monthly loan payment, total interest, and payoff timeline from principal, APR, and term.
• Mortgage repayment planner – monthly payments, lump sums.
  Simulate mortgage repayments with equal payment or equal principal methods, include bonus payments, lump-sum.
• Compound Interest Calculator.
  Estimate future value and Effective Annual Rate from APR, compounding frequency, years, and optional monthly.
• Discount calculator – stacked percentage, amount.
  Enter a list price and stack percentage cuts, fixed-amount deals and coupons to see final price and savings.
• Retirement Savings Calculator.
  Project your retirement nest egg by combining current savings, recurring monthly contributions, investment growth.
• Fuel Economy, Gas Cost and Trip Cost Calculator.
  Estimate your real-world fuel economy, gas cost for a drive, and total trip cost including tolls and parking.
• Biweekly loan amortization schedule (CSV export).
  Compute a biweekly amortization schedule (26 payments/year), include extra payments, and export the table to CSV.
• Bond Duration / DV01 / Convexity Calculator.
  Calculate Macaulay duration, modified duration, DV01, and convexity. Includes price-yield curve, CSV export.
• Bond Price ↔ Yield (YTM) Calculator.
  Compute bond price and yield to maturity (YTM) from coupon, maturity, and price or yield.
• Break-even Point and Required Sales Calculator.
  Calculate the break-even point, required sales to reach a target profit, and profit at your planned sales volume.
• Business Finance & Accounting (Margin/Breakeven/NPV/IRR).
  Estimate pricing, margin/markup, breakeven, and investment evaluation (NPV/IRR). Compare assumptions and share by URL.
• Consumption Tax Calculator.
  Calculate Japanese consumption tax with standard 10%, reduced 8% or custom rates per item.
• Credit card minimum payment simulator – payoff time.
  Estimate months to payoff and total interest by entering balance, APR, and your card’s minimum payment policy (rate.
• Credit Card Payoff & Debt Snowball Calculator.
  Estimate payoff time, total interest, and compare debt snowball vs.
• DCF Calculator — Simple valuation with sensitivity.
  Simple DCF calculator with FCF paste input, Gordon growth or exit multiple terminal value, sensitivity table, CSV.
• Debt-to-income (DTI) ratio calculator.
  Enter monthly income and monthly debt payments to compute your DTI percentage and a quick category label.
• Deposit interest calculator: future value & EAR.
  Find future value, interest, and EAR from deposit amount, rate, years, and compounding choice.
• Electricity Cost Calculator | kWh Use & Running Cost.
  Estimate electricity use and running cost from watts, hours per day, quantity, and your own price per kWh.
• EMI calculator (loan EMI, monthly payment).
  Calculate EMI (Equated Monthly Installment) from principal, annual interest rate, and term.
• Fee Drag Calculator – How fund fees reduce long-term returns.
  Compare 0% vs annual fees (expense ratio).
• Finance Function Calculators (PV/FV/PMT/NPV/IRR).
  Use calculators for PV/FV/PMT, NPV/IRR, and interest-rate conversion. Compare scenarios and share assumptions.
• Fixed Deposit (FD) calculator.
  Compute maturity value, interest earned, and effective annual rate (EAR) from principal, annual rate, years.
• GST Calculator (Add/Inclusive).
  Enter amount and GST rate (5/12/18/28%) to compute base, GST amount, and total for both exclusive and inclusive cases.
• Income Tax Calculator India (FY example).
  Estimate India income tax with educational example slabs for selected fiscal years.
• Interest Rate Calculator (RATE) — Solve APR from Payments.
  Solve interest rate from loan amount, payments, and term (Excel RATE equivalent).
• Interest Rate Converter (APR, APY, EAR).
  Use this interest rate converter to switch between APR, APY/EAR, monthly, and daily rates, or run the reverse.
• Invoice net ↔ gross calculator for VAT checks.
  Convert invoice amounts between net and VAT-inclusive totals.
• Lira ↔ kurus converter – split Turkish currency into.
  Convert between Turkish lira and kurus with live calculations that respect 100 kurus = 1 lira.
• Live FX currency converter – ECB reference rates.
  Convert currencies with live FX rates from ECB or Open ER API, view recent history, and share results.
• Loan affordability calculator – max payment (DTI).
  Estimate the maximum monthly payment (EMI) and loan amount from monthly income, EMI ratio (DTI), APR, and term.
• Loan amortization schedule (with CSV export).
  Build an amortization schedule with principal, interest, and balance per payment. Model extra payments and export.
• Margin & markup calculator – profit margin, markup.
  Enter cost, price, margin %, or markup % and instantly solve the remaining fields.
• Mortgage and Loan Repayment Burden Checker.
  Check your debt-to-income (DTI) ratio for a planned mortgage and other loans, and estimate how much you can safely.
• Mortgage Rate Increase Simulator — Payment and interest impact.
  Simulate mortgage rate increase scenarios and compare payments vs a fixed-rate baseline.
• Net ↔ gross salary converter – illustrative tax.
  Quickly convert between gross and net salary using a simple example tax rate. Educational only—actual payroll.
• New NISA savings simulator – tax-free allowance vs.
  Project your New NISA contributions versus a taxable account, track annual and lifetime allowance usage, and compare.
• NPV Profile Chart.
  Generate an NPV profile by sweeping discount rates.
• Payback period calculator – simple & discounted payback.
  Compute simple and discounted payback from initial investment and periodic cash flows.
• Portfolio Rebalance Calculator.
  Compute buy/sell amounts from current holdings and target weights.
• PPF Calculator (Annual Contribution — Educational).
  Estimate maturity, total invested, and gain from annual contribution, APR, and years with a simple annual-compounding.
• Price, Cost, Margin and Markup Calculator.
  Quickly calculate profit margin, markup, selling price and cost per unit.
• Recurring Deposit (RD) Calculator.
  Compute maturity amount, total invested, and estimated gain from monthly deposits, annual rate, and years.
• Refinance break-even calculator – when closing costs pay off.
  Compare current and refinanced loans.
• Rent vs Buy Calculator (Break-even with Costs & Investing).
  Compare renting vs buying with mortgage, taxes, maintenance, selling costs, and investment opportunity cost.
• ROI & CAGR Calculator | Return on Investment and.
  Calculate ROI, CAGR, gain or loss, and value multiple from an initial value and a final value.
• Salary gross ↔ net educational estimator – taxes.
  Convert gross ↔ net salary using simple flat or example progressive rates.
• Savings Goal & Monthly Contribution Calculator.
  Work out the monthly contribution to hit a savings goal, project how far your monthly deposits will grow, or estimate.
• Savings Goal Planner: Deposits, Time, Future Value.
  Work out the deposit needed to hit a savings target, the time required at a chosen deposit, or the future value.

Choose the finance tool by the decision you need to make

FAQ

Next tools and related hubs

• Biweekly loan amortization schedule
  Open this when you need the payment-by-payment timeline, not just a single payment estimate.
• Bond Duration / DV01 / Convexity Calculator
  Use this when price sensitivity to yield changes matters more than the bond price alone.
• Compound Interest Calculator
  Best next step when the real question is long-term growth from a principal, rate, and compounding rule.
• Break-even Point and Required Sales Calculator
  Switch here when the job is business planning, cost recovery, or sales targets.