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Free online calculators for finance, health, math, and everyday needs. Quick, accurate, and free to use.

Popular Calculators

  • Mortgage Calculator
  • Paycheck Calculator (Take-Home Pay)
  • Online BMI Calculator (Adults)
  • Time Card / Timesheet Calculator
  • Compound Interest Calculator
  • Auto Loan Calculator

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All Calculators

Choose from our ever-growing collection of 149+ calculators to suit your needs.

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Showing 38 calculators
🏠Mortgage
FINANCE

Mortgage Calculator

Calculate monthly mortgage payment (PITI), full amortization schedule, PMI drop-off, and extra payment savings.

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πŸ’΅Paycheck
FINANCE

Paycheck Calculator (Take-Home Pay)

Calculate US take-home pay after federal income tax, Social Security, Medicare, and state income tax. Supports pre-tax 401(k), HSA, and health insurance.

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πŸ•Time Card
FINANCE

Time Card / Timesheet Calculator

Calculate weekly work hours from clock-in / clock-out times, lunch breaks, regular vs overtime hours under FLSA, and gross weekly pay.

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πŸ“ˆCompound Interest
FINANCE

Compound Interest Calculator

Project investment growth with compound interest, regular contributions, multiple compound frequencies, and inflation adjustment.

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πŸš—Auto Loan
FINANCE

Auto Loan Calculator

Calculate auto loan monthly payment with down payment, trade-in, sales tax, fees, and full amortization schedule.

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🏦CD
FINANCE

CD Calculator (Certificate of Deposit)

Project CD maturity value, see early-withdrawal penalty impact, and compare CD returns to a high-yield savings account over the same period.

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🏦401(k) Calc
FINANCE

401(k) Retirement Calculator

Project your 401(k) retirement balance with employer match, IRS contribution limits, and inflation-adjusted today’s dollars.

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πŸ“ŠNet Worth
FINANCE

Net Worth Calculator

Track assets minus liabilities. Compare your net worth to US median wealth by age (2022 Fed SCF data) and the classic "millionaire next door" target.

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πŸ“ŠTax Bracket
FINANCE

US Federal Tax Bracket Calculator 2026

Calculate US Federal income tax (10-37% brackets), UK Income Tax, or custom progressive brackets. See marginal rate, effective rate, and take-home pay.

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🏦HYSA
FINANCE

High-Yield Savings Account (HYSA) Calculator

Project HYSA growth at today's top APYs (~4.0-4.5%), compare to traditional savings, and see after-tax interest with federal and state tax rates.

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πŸ’°Roth IRA
FINANCE

Roth IRA Calculator

Estimate tax-free Roth IRA growth, MAGI phase-out limits, and the Roth advantage over a taxable brokerage account.

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❄️Debt Payoff
FINANCE

Debt Payoff Calculator (Snowball vs Avalanche)

Compare the Snowball (smallest balance first) and Avalanche (highest APR first) debt strategies. Payoff dates, total interest, and the cost of paying minimums only.

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πŸ‡ΊπŸ‡ΈSocial Security
FINANCE

Social Security Benefits Calculator

Estimate your monthly Social Security retirement benefit using SSA bend points, your Full Retirement Age, and claim age 62-70.

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🧾Sales Tax
FINANCE

US Sales Tax Calculator

Calculate US sales tax by state with local rate override, forward and reverse modes, and tax-exempt support.

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🏑Affordability
FINANCE

Mortgage Affordability Calculator

Calculate the maximum house price you can afford (28/36 rule, DTI), stress test scenarios, and hidden home ownership costs.

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πŸ”₯FIRE
FINANCE

FIRE Calculator (Financial Independence, Retire Early)

Calculate your FIRE number using the 4% rule, years to FIRE, savings rate impact, and Coast FIRE for early retirement planning.

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🏦Loan
FINANCE

Loan & Interest Calculator

Calculate loan installments using flat, annuity, and declining balance methods. Simulate borrowing capacity.

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πŸ’ΉInvestment
FINANCE

Investment & Compound Interest Calculator

Simulate investment growth with compound interest and regular contributions. Includes year-by-year projections.

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⏰Overtime
FINANCE

Overtime Pay Calculator

Track weekly hours and compute regular, overtime (1.5x), and double-time pay under US FLSA and state daily-OT rules.

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πŸ’ΈSide Hustle
FINANCE

Side Hustle & Multi-Income Calculator

Track multiple income streams (gig economy, freelance, 1099), profitability per hour, self-employment tax estimates, and income goal planner.

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β›½Gas Fee
FINANCE

Crypto Gas Fee Calculator (Gwei & Layer 2)

Calculate Ethereum gas fees in Gwei/USD, Layer 2 comparison (Arbitrum/Optimism/Polygon), and gas optimization tips.

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🏠Rental ROI
FINANCE

Rental Property ROI Calculator

Calculate Cap Rate, Cash-on-Cash Return, 5/10-year total ROI, and Airbnb vs long-term rental comparison.

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πŸ’ΌSalary
FINANCE

Salary Negotiation & Total Compensation Calculator

Calculate total compensation (base+bonus+equity+benefits), counter offer math, raise vs job switch, and freelance hourly rate.

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πŸ”„Refinance
FINANCE

Loan Refinance Calculator

Calculate refinance savings, break-even point, cash-out refi, and term vs rate option comparisons.

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πŸͺ™Staking
FINANCE

Crypto Staking & DeFi Yield Calculator

Calculate ETH/SOL/ADA/DOT staking rewards, auto-compound vs manual, staking vs HODL comparison, and DeFi yield strategies.

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πŸ“‰Depreciation
FINANCE

Asset Depreciation Calculator

Calculate asset depreciation with 4 methods: straight-line, declining balance, SYD, and units of production. Includes IAS 16 reference.

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πŸ•ŒSharia Mortgage
FINANCE

Sharia Mortgage Calculator

Simulate Islamic mortgage with Murabahah, Musyarakah Mutanaqisah (MMQ), and IMBT contracts β€” comparison with conventional mortgage.

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πŸ“±Subscriptions
FINANCE

Subscription Tracker Calculator

Track monthly subscriptions, compare annual vs monthly billing, 5-year cost projection, and identify subscriptions to cancel.

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🏦NPV & IRR
FINANCE

NPV & IRR Calculator

Analyze investment feasibility with Net Present Value, Internal Rate of Return, Payback Period, and project comparison.

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πŸ“ˆROI
FINANCE

ROI (Return on Investment) Calculator

Calculate simple ROI, annualized ROI (CAGR), compare investments side by side, and plan target returns with projections.

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πŸ’±Currency
FINANCE

Currency Conversion Calculator

Convert between 15 major world currencies. Includes quick conversion tables and popular currency pairs.

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πŸ’°Profit
FINANCE

Profit Margin & Markup Calculator

Calculate profit margin, markup, and selling price from cost. Three calculation modes for business pricing.

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πŸ’±Forex
FINANCE

Forex Calculator (Pip, Lot, Margin)

Calculate pip value, lot size, and margin requirements for forex trading. Supports various currency pairs and leverage settings.

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πŸ“ŠBEP
FINANCE

Break-Even Point (BEP) Calculator

Calculate your business break-even point in units and revenue. Includes contribution margin and margin of safety analysis.

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πŸ–οΈRetirement Fund
FINANCE

Retirement Fund Calculator

Calculate how much you need for retirement and the monthly savings required to retire comfortably.

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πŸ“‰Inflation
FINANCE

Inflation Calculator

Calculate the impact of inflation on the value of money and purchasing power over time. Includes year-by-year projections.

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πŸ“ˆStock Average
FINANCE

Stock Average Price Calculator

Calculate average stock purchase price (average down/up), break-even price, and simulate profit/loss scenarios.

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🏷️Discount
FINANCE

Online Discount Calculator

Calculate the price after single or stacked (double) discounts. Includes tax simulation and total savings breakdown.

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