
Money
Pay, a loan or mortgage payment, whether a house fits take-home pay, savings growth, or buying power over time.
- How Much Is That Hourly Wage a Year? Turn an hourly wage into weekly, monthly, and yearly pay before taxes. Overtime has its own line.
- How Much Is My Salary After Tax? Estimate federal income tax, FICA, and state income tax on a U.S. salary, then see take-home by year, month, and paycheck.
- How Much Is My Take-Home Paycheck? Estimate take-home pay per paycheck by spreading a full-year federal, FICA, and state tax estimate across your pay periods. Your employer withholds from a W-4 and IRS tables instead, so a real stub will differ.
- Bonus Tax Calculator What actually lands from a bonus. Employers withhold a flat IRS supplemental rate on a separately paid bonus, not the rate your salary implies, which is why it looks over-taxed.
- How Much Is My Mortgage Payment? Monthly principal and interest from the home price, down payment, term, and the most recent Freddie Mac national average rate. You can type a quote instead.
- How Much Is My Loan Payment? Monthly payment, total interest, and payoff time for a fixed-rate loan. Add extra principal if you want to see how much sooner it ends.
- Compound Interest Calculator See how a starting balance and recurring deposits grow with compound interest. Contributions are added at the end of each period.
- How Long to Pay Off My Debt? Compare snowball and avalanche payoff plans on the same debts. See which order saves more interest and how extra payments change the date.
- What Is That Worth After Inflation? See what an amount in one U.S. month would buy in another, using the BLS CPI-U all-items index since 1913.
- Can I Afford This House? A planning screen for a specific house, or a comfortable / reasonable / aggressive price from take-home pay, debts, and the most recent national average rate.
- Insurance Cost Calculator Budget for homeowners, renters, and auto insurance with dated NAIC state averages or your own premiums. Compare annual costs and deductible choices.
- Health Insurance Subsidy Calculator Estimate your 2026 ACA premium tax credit and what a Marketplace plan costs after it, using the published IRS contribution table and HHS poverty guidelines.
- Marketplace Health Plan Cost Calculator See what Bronze, Silver, and Gold plans cost in your county from the filed 2026 premiums, with the deductible and the most a year can cost you.
- Medicare Cost Calculator Work out your 2026 Medicare premiums including the income-related adjustment, with the deductibles owed before any of it pays and the income cliffs shown.
- Cost of Living: Compare Two U.S. Places Estimated modeled monthly living costs for a U.S. city, metro, or state using HUD Fair Market Rent, USDA Food Plans, and official regional context. This is not a proprietary index.
- Car Loan Calculator Monthly vehicle loan payment, total interest, and amount financed. Not insurance, fuel, or the true cost of owning the car.
- Investment Calculator Project an initial amount plus recurring contributions under an assumed return. The return is an assumption, not a guarantee.
- Retirement Calculator Project a retirement balance from current savings, contributions, and an assumed return, then compare it with a goal you type.
- Amortization Schedule Calculator See principal, interest, and remaining balance by payment for a fixed-rate loan. The payment uses the same engine as the Loan Calculator.
- CD Calculator Ending balance and interest on a certificate of deposit from the APY you enter. Not a live bank offer.
- Interest Calculator Simple interest: principal × annual rate × time. For compounding or recurring deposits, use the dedicated calculators.
- Roth IRA Calculator Project Roth IRA contribution growth under an assumed return. This does not determine MAGI eligibility.
- 401(k) Calculator Project employee deferrals and a simple employer match over time at an assumed return. Catch-up and eligibility rules are not modeled.
- Should I Refinance My Mortgage? Compare the mortgage you have with one you could replace it with: the new payment, how many months of savings it takes to cover closing costs, and whether a lower payment costs more interest overall.
- When Will My Mortgage Be Paid Off? See how extra principal changes the remaining payoff date and interest on the current mortgage balance.
- Credit Card Payoff Calculator Months and interest to pay off one credit-card balance at a stated monthly payment, or the payment needed for a target payoff time.
- Effective Tax Rate Calculator Work out the share of your pay that actually goes to tax, and see how far it sits below the bracket you are in.
- Federal Tax Bracket Calculator Find which federal bracket your last dollar falls in, see how your income splits across every band, and how much room is left before the next one.
- Capital Gains Tax Calculator See how 2026 long-term capital gains stack into the 0%, 15% and 20% bands, and whether the 3.8% Net Investment Income Tax applies.
- Child Tax Credit Calculator Estimate the 2026 child tax credit, credit for other dependents, and additional child tax credit from Revenue Procedure 2025-32 and Schedule 8812.
- Earned Income Credit Calculator Estimate the 2026 federal earned income tax credit from earned income, AGI, qualifying children and the investment-income limit in Revenue Procedure 2025-32.
- Quarterly Estimated Tax Calculator Work out the Form 1040-ES required annual payment and four equal installments using the 90%, 100% and 110% safe harbors.
- Self-Employment Tax Calculator Figure Schedule SE tax on net profit after the 92.35% factor, sharing the Social Security wage base with W-2 wages, plus Form 8959 Additional Medicare Tax.
- Tax Refund Calculator Estimate a 2026 federal refund or amount owed from published income tax, child credits and EITC, minus the withholding you already had taken out. Not a W-4 projection.
- Conforming Loan Limit Calculator The FHFA loan limit for your county and unit count, and whether a given loan amount is conforming, high-balance, or jumbo.
- HSA Contribution Limit Calculator The 2026 HSA contribution limit from IRS Rev. Proc. 2025-19, including the age-55 catch-up and a check of whether a plan’s deductible and out-of-pocket maximum qualify as an HDHP.
- RMD Calculator The required minimum distribution from an IRA using IRS Publication 590-B Table III (Uniform Lifetime) and SECURE 2.0 starting ages.
- VA Funding Fee Calculator The VA funding fee from the published rate charts: loan type, first or subsequent use, and down payment, including the option to finance the fee.
- Credit Card Utilization Calculator Calculate your overall revolving credit utilization ratio and per-card balances, and see exact dollar payoffs needed to reach optimal credit score tiers.
- Debt-to-Income (DTI) Calculator Calculate your front-end and back-end debt-to-income ratio and compare against Fannie Mae, Freddie Mac, FHA, and VA mortgage qualification benchmarks.
- Emergency Fund Calculator Calculate your true essential monthly survival budget, target 3- to 12-month safety net runway, and monthly savings plan to reach financial security.
- IRS Mileage Reimbursement Calculator Calculate official IRS standard mileage deductions and employer reimbursements for business, medical, and charity travel across 2024–2026.
- Savings Goal Calculator Find the exact monthly deposit needed to reach your savings target, or calculate how many months it will take with compound interest growth.

Home
A rough electric bill by state, what an appliance costs to run, or bags of concrete for a slab.
- How Much Is My Electric Bill by State? A monthly electric bill from your kWh and the EIA average for your state. You can type the rate from your bill instead.
- How Much Does This Appliance Cost to Run? Estimate what a device costs to run from its wattage, hours of use, and the EIA average for your state. You can type the rate from your bill instead.
- How Much Concrete Do I Need? Cubic yards and bag counts for a rectangular slab. Waste is listed separately.
- How Many Square Feet Is This Space? Add rectangular rooms or spaces and get total area in square feet, with square meters from the shared conversion engine.

Car
Whether a car fits your take-home pay, yearly EV charging versus gasoline, or fuel for a road trip.
- EV vs Gas: Which Costs Less to Drive? Yearly charging versus gasoline, using your miles, MPG, a local gas price, and a state electricity average.
- How Much Does a Road Trip Cost in Gas? Fuel cost for a drive from your miles, MPG, and the most recent EIA regular-gas average for your state or region. You can type a pump price instead.
- How Much Car Can I Afford? Monthly cash cost of a car (loan payment, fuel or charging, insurance, upkeep, registration) and how much of your take-home pay it would take. Depreciation is not included, so this is out-of-pocket cost, not total cost of ownership.
- Collision and Comprehensive Worth-It Calculator Weigh collision and comprehensive against what your car is worth, using published NAIC state premiums or the figures on your own policy.

Everyday
Workdays between two dates, age, tips, duration math, or hours on a timesheet.
- GSA Per Diem Rates by City Federal travel per diem for a trip in the continental U.S.: the GSA lodging ceiling for every night, meals and incidentals for every day, and a check of your actual room rate against the cap. Type a city or ZIP.
- Business Days Calculator Count workdays between two dates, or add workdays to a date. Federal holidays are optional.
- Tip Calculator Tip amount, bill total, and an even per-person split from the subtotal and tip percent you enter.
- Age Calculator Completed years, months, and days from a birth date to a selected as-of date, including leap-day rules.
- Time Calculator Add or subtract hours, minutes, and seconds as durations. Negative results stay signed and normalized.
- Random Number Generator Generate one or more numbers in a range, including unique integers. Ordinary utility randomness, not a cryptographic tool.
- Time Card Calculator Add shift start, end, and unpaid break across one or more days, including overnight shifts. Overtime law is not applied.
- Date Calculator Find the calendar date a given number of days, weeks, months, or years before or after another date. Month ends are clamped.
- Days From Today Calculator The calendar date that is N days from today, or N days ago. Weekends still count; this is not business days.

Food
Scale a recipe up or down. Amounts stay in kitchen fractions.
- Recipe Scaler Scale a recipe to more or fewer servings. Amounts round to the nearest 1/16.

Shopping
Compare package prices, or see which states look cheaper on official averages.
- Which Package Is Cheaper per Unit? See which package is cheaper per ounce, pound, or item, even if the labels use different units.
- Cheapest States for Electricity, Gas, and Groceries Compare electricity, gasoline, and the grocery staples BLS splits by region. These are government averages, not store ads.
Health
Adult formula estimates for BMI, BMR, TDEE, daily calories, and circumference body fat. Not diagnoses.
- BMI Calculator Estimate adult Body Mass Index from height and weight in metric or U.S. units. Category labels are secondary CDC screening ranges, not a diagnosis.
- Calorie Calculator Estimate daily calories from adult BMR and a documented activity factor. Maintenance is the primary result; optional offsets stay small.
- TDEE Calculator Estimate Total Daily Energy Expenditure as adult BMR times a labeled activity multiplier. The factor is a planning assumption.
- BMR Calculator Estimate adult Basal Metabolic Rate with the Mifflin–St Jeor equation. This is not a measured metabolic rate.
- Body Fat Calculator Estimate body-fat percentage from neck, waist, and hip circumferences using the documented U.S. Navy method. Not a DEXA scan.
Math
Percentage relationships, percent change, fractions, unit conversion, and a bounded scientific calculator.
- Percentage Calculator What is X% of Y, X is what percent of Y, or X is Y% of what. Division by zero is rejected.
- Percent Change Calculator Percentage increase or decrease from an original value to a new value. A zero baseline is not defined.
- Scientific Calculator Powers, roots, logs, factorials, and trig in degrees or radians, with π and e, on a keypad that follows the normal order of operations.
- Fraction Calculator Add, subtract, multiply, divide, and simplify fractions with exact integer arithmetic, then show mixed and decimal forms.
- Unit Conversion Calculator Convert length, mass, volume, area, temperature, and speed through canonical base units, so every conversion runs through one tested path.
Education
A weighted course grade or a GPA from credits, with the scale shown as an assumption.
- What Grade Do I Need on the Final? The score you need on the final to finish with the grade you want, or a weighted grade from each category. Any letter shown uses an assumed 90/80/70/60 scale.
- GPA Calculator GPA from courses, letter grades, and credit hours on a visible unweighted 4.0 convenience scale. Not every school’s policy.
