Calculate it.
Get on with your day.
Simple calculators for money, work, home projects, and everyday math. No signup and no information saved.
Find your calculatorSearch by task or browse a topic.
Enter your numbersYour data stays in your browser.
Get a clear answerSee the result and how it was calculated.
Find the right calculator
Home project costs, HVAC and solar, loans, grades, and everyday math—grouped so you can jump in.
Work hours calculators
Time cards, clock in/out, overtime, shifts, decimal hours, timesheets, hourly pay, and IRS mileage reimbursement for U.S. workweeks.
Explore work hours →Finance calculators
Mortgage payments, auto and personal loans, compound interest, credit card payoff, affordability, and seller fees.
Explore finance →Salary & Work calculators
Convert salary to hourly pay, estimate net pay by state, and annualize wages with the hours you actually work.
Explore salary & work →Math calculators
Percentages, midpoints, vector dot products, partial fractions, and Laplace transforms with worked examples.
Explore math →Education calculators
Grade percent, weighted GPA on a 4.0 scale, and the final exam score you need for a target grade.
Explore education →Home calculators
Paint, concrete bags, flooring, tile, drywall, roofing, siding, fence, deck, pavers, mulch, gravel, fill dirt, HVAC, water heaters, and solar.
Explore home →Everyday calculators
Tips, tax, discounts, age, rent increases, TV size, tires, trip gas, sleep, caffeine, pets, and cooking conversions.
Explore everyday →Tech calculators
CPU vs GPU bottleneck percentage by resolution and Twitch Bits to USD for streamers and viewers.
Explore tech →Popular calculators
Start with one of the tools people use most often.
Time Card Calculator
Enter clock-in, clock-out, break, and a second shift for Monday through Sunday. Instant weekly hours, overtime after 40, decimal hours, and estimated gross pay.
Calculate now →Paycheck Calculator by State
Estimate 2026 take-home pay from gross wages, pay frequency, filing status, and U.S. state. Includes federal brackets, FICA, and a simplified state tax.
Calculate now →Paint Calculator
Calculate how much paint you need from wall size, doors, windows, and coats. Get paintable area, gallons, liters, and how many cans to buy.
Calculate now →Concrete Bag Calculator
Count 40, 60, or 80 lb concrete mix bags from slab length, width, and thickness. Primary result is bags to buy, with cubic yards if a truck is cheaper.
Calculate now →Sleep Calculator
Find bedtimes from a wake-up time, or wake times from a bedtime, using 90-minute sleep cycles plus time to fall asleep.
Calculate now →Mileage Reimbursement Calculator
Calculate mileage reimbursement from miles driven. Defaults to the IRS H2 2026 business rate of 76¢ per mile, with charity and medical rates.
Calculate now →HVAC Size Calculator
Estimate air-conditioner and heat-pump size in BTU and tons from square footage, climate, ceiling height, insulation, sun, and occupancy.
Calculate now →Mortgage Calculator
Estimate your monthly mortgage payment including principal, interest, property taxes, insurance, and HOA dues.
Calculate now →Flooring Calculator
Add up to four rooms, then calculate flooring square footage, extra material for waste, boxes if you know coverage per box, and optional cost.
Calculate now →Overtime Calculator
Split a week of daily hours into regular, overtime, and double-time using FLSA weekly-40, daily-8, or both (California-style). Optional pay.
Calculate now →Hours Worked Calculator
Calculate hours worked from one clock-in and clock-out, including unpaid break and overnight shifts. Shows decimal hours and hours:minutes.
Calculate now →Solar Panel Savings Calculator
Estimate solar system size, panel count, net cost after the 30% federal tax credit, payback years, and 25-year savings from your electric bill.
Calculate now →All free calculators
Work hours
- Time Card Calculator
- Work Hours Calculator
- Hours Worked Calculator
- Hours Calculator
- Time Calculator
- Clock In / Clock Out Calculator
- Overtime Calculator
- Shift Calculator
- Lunch Break Calculator
- Biweekly Time Card Calculator
- Weekly Hours Calculator
- Decimal Hours Calculator
- Minutes to Decimal Calculator
- Decimal to Hours and Minutes Calculator
- Hours and Minutes Calculator
- Hourly Pay Calculator
- Hours to Salary Calculator
- Salary to Hourly Calculator
- Overtime Pay Calculator
- Timesheet Calculator
- Mileage Reimbursement Calculator
Home
- Paint Calculator
- Concrete Calculator
- Gravel Calculator
- Flooring Calculator
- Tile Calculator
- Drywall Calculator
- Fence Calculator
- Roofing Calculator
- Siding Calculator
- Topsoil Calculator
- Sand Calculator
- Paver Calculator
- Wallpaper Calculator
- Concrete Bag Calculator
- Dirt Calculator
- Moving Truck Size Calculator
- Water Heater Size Calculator
- Pergola Cost Calculator
- Fence Cost Calculator
- Concrete Slab Calculator
- Gravel Driveway Calculator
- Mulch Calculator
- Shed Cost Calculator
- Moving Cost Calculator
- Dumpster Size Calculator
- HVAC Size Calculator
- Generator Size Calculator
- Solar Panel Savings Calculator
- Tree Removal Cost Calculator
- Board Foot Calculator
- Roof Pitch Calculator
- Deck Material Calculator
- Square Footage Calculator
Everyday
- Rent Increase Calculator
- TV Size / Viewing Distance Calculator
- Tire Size Difference Calculator
- Gas Trip Cost Calculator
- Sleep Calculator
- Caffeine Half-Life Calculator
- Dog Age Calculator
- Cat Age Calculator
- Cooking Measurement Converter
- Female Delusion Calculator
- Tattoo Price Calculator
- Age Calculator
- Date Difference Calculator
- Tip Calculator
- Discount Calculator
- Sales Tax Calculator
Answers you can understand.
Every calculator shows its formula, a worked example, and FAQs. Math runs in your browser—nothing you type is required to create an account.