Financial Calculators

Power, timing, RF, filters, batteries, PCB, signal math, and more — all fast, browser-based tools.

74 tools All Modules

Find a Tool

Tip: Search matches titles and descriptions. This does not change the URL.

Tools

401K Calculator

Estimate retirement account growth with contributions, employer match, salary growth, returns, and fees.

Amortization Calculator

Calculate payments, totals, and a full amortization schedule. Add extra payments to see payoff time and interest savings.

Annuity Calculator

Supports ordinary annuity vs annuity due, plus compounding/payment frequency.

Annuity Payout Calculator

Estimate the payment you can withdraw from an annuity balance over a fixed term, using an interest rate and payment schedule.

APR Calculator

Enter loan amount, fees, payment, and term to solve APR. Includes nominal APR, effective rate.

Auto Lease Calculator

Estimate a monthly lease payment using MSRP, selling price, residual, money factor, term, taxes, and fees.

Auto Loan Calculator

Estimate monthly payment, total interest, and total cost. Supports down payment, trade-in, taxes, fees, and extra payments.

Average Return Calculator

Enter a list of periodic returns (%, per period) to compute arithmetic and compound (geometric) average return.

Boat Loan Calculator

Estimate monthly payment, total interest, and payoff impact of extra payments. Includes taxes, fees, down payment, and trade-in.

Bond Calculator

Price ↔ Yield (YTM), current yield, duration, and convexity — fast, clean, and with Show Work.

Budget Calculator

Build a clean monthly budget: income, expenses, savings, and debt. Live totals, show-work.

Budget Planner

Build a monthly budget fast: income, expenses, and savings targets. See totals, category breakdowns, and your remaining cash flow.

Business Loan Calculator

Estimate monthly payment, total interest, total cost, and payoff timeline. Add fees and extra payments if needed.

Canadian Mortgage Calculator

Canadian-style mortgage payments with payment frequencies, compounding options, amortization summary, and Show Work.

Cash Back or Low Interest Calculator

Compare a cash back offer vs a low APR offer for the same spending and payoff plan. See the break-even point and which option costs less.

CD Calculator

Calculate CD maturity value, interest earned, and convert APR ↔ APY using your compounding frequency.

College Cost Calculator

Estimate total cost, net cost, and out-of-pocket for college with yearly inflation and aid.

Commission Calculator

Calculate commissions from sales using percent, tiered brackets, base + percent, or a recoverable draw.

Compound Interest Calculator

Estimate future value with compounding and optional contributions.

Cost Calculator

Calculate total cost from unit price and quantity, with optional discount, tax, shipping, and fees.

Credit Card Calculator

Estimate payoff time, total interest, and total paid from your balance, APR, and monthly payment.

Credit Cards Payoff Calculator

Estimate payoff time, total interest, and a month-by-month schedule. Switch modes to solve for the payment you need.

Currency Calculator

Convert amounts using a manual exchange rate (deterministic) or fetch a live rate on demand.

Debt Consolidation Calculator

Compare your current debts vs a consolidation loan. See estimated payment, total interest, payoff time, and savings.

Debt Payoff Calculator

Add your debts, choose Snowball or Avalanche, and see payoff date + total interest.

Debt-to-Income (DTI) Ratio Calculator

Calculate front-end and back-end debt-to-income (DTI) ratios using monthly gross income and monthly debt payments.

Depreciation Calculator

Calculate depreciation using Straight-Line, DDB, or SYD. Includes schedule, accumulated depreciation, and book value.

Discount Calculator

Calculate sale price, savings, and optional sales tax. Supports percent-off and amount-off discounts.

Down Payment Calculator

Choose percent or fixed down payment. Optionally add tax/fees and apply trade-in, rebate, and payoff to estimate your amount financed.

Estate Tax Calculator

Estimate taxable estate and estate tax owed using deductions + configurable exemption and tax settings.

FHA Loan Calculator

Estimate monthly payment with P&I, Upfront MIP, Annual MIP, plus taxes, insurance, and HOA.

Finance Calculator

Switch modes for loans, savings growth, and interest. Clear outputs, optional amortization preview, and Show Work.

Future Value Calculator

Estimate the value of a lump sum and optional recurring contributions over time with compounding.

House Affordability Calculator

Estimate how much home you may be able to afford based on your income, debts, down payment, loan settings, and housing costs.

Income Tax Calculator

Estimate U.S. federal income tax, taxable income, marginal rate, effective rate, and after-tax income.

Inflation Calculator

Compare buying power between two years using CPI-based reference data. See adjusted value, total inflation, annualized rate.

Interest Calculator

Calculate simple or compound interest, optional recurring contributions, ending balance, and total interest earned.

Interest Rate Calculator

Estimate the annual interest rate from principal, ending balance, and time. Supports both simple and compound interest.

Investment Calculator

Estimate future value using compound growth, optional recurring contributions, and contribution timing.

IRA Calculator

Project Traditional or Roth IRA growth with contributions, compound returns, inflation adjustment, and retirement-age planning.

IRR Calculator

Evaluate investment performance from an initial cost and projected cash flows. Includes IRR, NPV check.

Lease Calculator

Estimate monthly lease payments, depreciation, finance charge, taxes, due at signing, and total lease cost.

Margin Calculator

Calculate selling price, cost, profit, gross margin, and markup in one place with clean step-by-step work.

Marriage Tax Calculator

Compare estimated taxes as two single filers versus married filing jointly to see a possible marriage bonus or marriage penalty.

Mortgage Amortization Calculator

Estimate payment, interest, payoff timing, and full amortization details for a mortgage with optional taxes, insurance, HOA, and extra payments.

Mortgage Calculator

Estimate monthly mortgage payments, housing costs, total interest, and payoff totals. Add taxes, insurance, PMI, HOA, and extra payments.

Mortgage Payoff Calculator

Estimate your payoff date, total interest, and how much faster you can become mortgage-free with extra payments.

Payback Period Calculator

Calculate how long it takes for an investment to recover its initial cost using equal yearly cash inflows or variable annual cash flows.

Payment Calculator

Estimate loan or financing payments fast. Compare payment frequency, extra payments, and total borrowing cost.

Pension Calculator

Estimate pension income using salary, years of service, multiplier, retirement age, survivor option, and COLA assumptions.

Percent Off Calculator

Calculate sale price, discount amount, money saved, and optional total after tax. Also includes reverse mode to estimate the original price from a discounted price.

Personal Loan Calculator

Estimate monthly payment, total repayment, interest cost, and the effect of extra monthly payments.

Present Value Calculator

Calculate the value today of a future lump sum or a stream of payments using discount rate, time, and compounding.

Real Estate Calculator

Analyze a property from both a buyer and investor perspective. Estimate mortgage payment, total monthly cost, cash to close, NOI, cap rate, and cash flow.

Refinance Calculator

Compare your current loan against a refinance. Estimate payment change, interest savings, closing-cost break-even, and optional cash-out impact.

Rental Property Calculator

Estimate mortgage payment, monthly cash flow, annual cash flow, NOI, cap rate, and cash-on-cash return for a rental property deal.

Rent Calculator

Estimate monthly housing cost, rent affordability, move-in cash needed, and roommate splits.

Rent vs Buy Calculator

Compare the long-term financial impact of renting versus buying with mortgage costs, rent increases, ownership expenses, equity, appreciation, and selling costs.

Repayment Calculator

Estimate repayments, total interest, and total cost for loans using fixed-rate repayment inputs.

Retirement Calculator

Estimate how your savings could grow from now to retirement using current balance, recurring contributions, expected return, and inflation assumptions.

RMD Calculator

Estimate your required minimum distribution using your prior year-end balance, age, and beneficiary details. View the divisor, deadline, table used, and step-by-step work.

ROI Calculator

Calculate return on investment, profit, net return, and annualized ROI using purchase cost, ending value, income, fees, and time held.

Roth IRA Calculator

Estimate Roth IRA growth, total contributions, investment gains, and inflation-adjusted retirement value.

Salary Calculator

Convert pay across common periods and estimate annual compensation with overtime, bonus, commission, raise, and unpaid time adjustments.

Sales Tax Calculator

Calculate tax amount, final total, reverse tax, quantity totals, and optional discounts with clean step-by-step work.

Savings Calculator

Estimate future savings growth from your starting balance, recurring deposits, interest rate, compounding schedule, and optional inflation adjustment.

Savings Goal Calculator

Enter your goal, current savings, and target date to calculate how much you need to save each day, week, or month.

Simple Interest Calculator

Calculate interest earned or owed using the simple interest formula. Solve for interest, total amount, principal, rate, or time with step-by-step work.

Social Security Calculator

Estimate retirement benefits by filing age. Compare early, full retirement age, and delayed claiming scenarios with monthly and annual totals.

Student Loan Calculator

Estimate payment amount, total interest, total paid, and payoff date for a fixed student loan with optional extra payments.

Take Home Paycheck Calculator

Estimate gross pay, taxes, deductions, and your net paycheck. Supports hourly or salary income and a clear step-by-step breakdown.

UK Mortgage Calculator

Estimate monthly mortgage payments in the UK, compare repayment vs interest-only, and review deposit, loan amount, LTV, total interest, and total paid.

VA Mortgage Calculator

Estimate your VA home loan payment, funding fee, financed balance, and total monthly housing cost.

VAT Calculator

Add VAT, remove VAT, or split totals into net amount, VAT amount, and gross amount.

Tool Info

Last updated:

This index may update as Electronics tools are added, renamed, or reorganized.

Cookies & privacy

Utilities Bunker uses necessary cookies to run the site. Optional cookies help remember preferences, measure usage, and improve the platform. You can change your choices any time. Privacy Policy.

Manage Cookies