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Calculators

Browse 84 calculators. Choose a tool to get started.

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401(k) Calculator

Project your 401(k) with employer match, year by year.

AC BTU Calculator

Find the right AC size in BTU for any room — no more guessing.

ACA Subsidy Calculator

Estimate your 2026 Obamacare premium tax credit

Age Calculator

Your exact age in years, months and days.

Amortization Calculator

See every payment of your loan, principal vs interest.

Auto Loan Calculator

Monthly car payment, total interest & cost with term comparison.

Bill Split Calculator

Split the check fairly with tax and tip

Black Friday Budget Planner

Stay on budget through Black Friday deals

BMI Calculator

Calculate your BMI.

Body Fat Percentage Calculator

Estimate body fat % with the U.S. Navy tape-measure method, plus fat vs. lean mass.

Bonus Tax Calculator

Your bonus after IRS withholding

Bra Size Calculator

Find your true US bra size in 2 steps

Calories Burned Calculator

See how many calories walking, running, cycling, and more burn for your weight and workout time.

Capital Gains Tax Calculator

Estimate the federal tax on your investment gains.

Cat Age Calculator

Your cat’s age in human years

Christmas Budget Planner

Plan gifts & holiday spending in USD

Christmas Light Calculator

Light counts for trees and rooflines

Closing Cost Calculator

Itemized closing costs and total cash to close for any home purchase.

Coffee to Water Ratio Calculator

Perfect coffee dose for every brew method

Compound Interest Calculator

Watch your savings grow over the years.

Concrete Calculator

Cubic yards, bag counts and cost for any concrete job.

Updated · 8 Nov

Countdown Timer

Live countdown to any date with shareable link.

Daycare Cost Calculator

Compare weekly, monthly and annual childcare costs by state.

Debt Payoff Calculator

Debt-free date + interest for snowball vs avalanche strategies.

Diaper Cost Calculator

Project diaper spend: disposable vs cloth

Discount Calculator

Sale prices, percent off, stacked discounts and savings.

Dog Age Calculator

Dog years to human years with size-adjusted vet formulas.

Dog Chocolate Toxicity Calculator

Is that chocolate dangerous for your dog? Instant risk check.

Emergency Fund Calculator

Your 3, 6, and 12-month targets

Federal Income Tax Calculator

Estimate your 2026 federal tax by bracket, with marginal and effective rates and after-tax income.

Final Grade Calculator

Find the final exam score you need.

Firewood Calculator

How many cords of firewood for winter

Flooring Calculator

Calculate square feet, boxes, and material cost for any flooring project.

FSA Contribution Calculator

Pick your open-enrollment FSA amount

Fuel Cost Calculator

Figure out exactly what a trip or commute costs in gas.

Full Retirement Age Calculator

Find your SSA full retirement age and estimated benefits at 62, full age, and 70.

Gift Wrap Calculator

How much wrapping paper to buy

GPA Calculator

Semester & cumulative GPA, 4.0 scale.

Halloween Candy Calculator

Never run out of candy on Halloween night

HDHP vs PPO Calculator

Compare health plans and find your break-even point

Heat Index Calculator

Enter temperature and humidity to see what the heat really feels like, with NWS danger levels.

Holiday Pay Calculator

Holiday premium pay at 1.5x or 2x

Hourly to Salary Calculator

Convert hourly wages to annual salary instantly.

HSA Contribution Calculator

Max 2026 HSA limits and your tax savings

Ingredient Substitution Calculator

Find exact swaps for missing baking ingredients with US measures.

Macro Calculator

Daily protein, carbs & fat targets

Mortgage Calculator

Estimate your monthly payment.

Moving Cost Calculator

Estimate DIY vs full-service moving costs for any home size.

Mulch Calculator

Cubic yards, bag counts, and cost for your mulch project.

One Rep Max Calculator

Estimate your 1RM — Epley, Brzycki, Lombardi + % table.

Online Stopwatch

Millisecond-precision stopwatch with unlimited lap times.

Overtime Pay Calculator

Time-and-a-half and double-time pay math

Ovulation Calculator

Find your fertile window and ovulation day in seconds.

Paint Calculator

Calculate how much paint you need for any room, in seconds.

Party Drink Calculator

Exactly how much to buy for your party

Pay Raise Calculator

Find your new salary after any raise, in every pay period.

Paycheck Calculator

Estimate your take-home pay after US taxes.

Percentage Calculator

X% of Y, discounts, tips and percent change.

Pomodoro Timer

Stay focused with 25-minute work sprints, short breaks, and a long break every 4 sessions.

Pregnancy Due Date Calculator

Estimate your baby’s due date.

Profit Margin Calculator

Margin, markup & profit in one place

Property Tax Calculator

Estimate your annual property tax and monthly escrow.

Reaction Time Test

Click when the screen turns green and measure your reflexes over 5 trials.

Recipe Scaling Calculator

Double or halve any recipe exactly

Rent Affordability Calculator

Enter your income and see the rent range you can actually afford, with landlord approval checks.

Rent vs Buy Calculator

Compare renting against buying — mortgage, taxes, insurance, HOA, and upkeep — and find your break-even year.

Road Trip Cost Calculator

Estimate gas, tolls, hotels and food for your next road trip.

Salary to Hourly Calculator

Convert annual salary to an hourly wage.

Sales Tax Calculator

Calculate US sales tax by state — forward and reverse tax modes included.

Self-Employment Tax Calculator

Work out the SE tax on your freelance or 1099 income.

Sleep Cycle Calculator

Best bedtime or wake-up time based on 90-min sleep cycles.

State Income Tax Calculator

2026 federal + state tax and take-home pay

Student Loan Payoff Calculator

Find your debt-free date with extra payments.

Target Heart Rate Zone Calculator

Find your personalized fat burn, cardio, and peak heart rate zones in BPM.

TDEE Calculator

Find your daily calorie needs for cutting, maintaining or bulking — free, no signup.

Thanksgiving Dinner Timeline Planner

Minute-by-minute Thanksgiving cooking schedule

Thanksgiving Leftover Safety Timer

USDA eat-by dates for every dish

Thanksgiving Side Dish Calculator

Exact side-dish portions per guest

Thanksgiving Turkey Calculator

Turkey size, thaw time, and cook time in seconds

Time Card Calculator

Total your work hours, breaks, overtime and gross pay — free, no signup.

Tip Calculator

Split bills and calculate tips the American way.

Water Intake Calculator

Daily water intake from weight, activity level, and climate.

Wind Chill Calculator

See what the cold really feels like — official NWS wind chill plus frostbite risk time.

Zodiac Sign Calculator

Enter your birth date to find your Western sun sign and Chinese zodiac animal, with traits and compatibility.

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