Start with the task name, then use the formula and example on the calculator page to confirm that the inputs match your real question.
Quick daily math
Everyday Calculators
Common calculators for percentages, dates, tips, age, time, unit conversions, home projects, and other everyday questions.
127 tools live
Explore categories7 tool groups
Tools in this category
Percentage CalculatorFind a percent of a number, compare a part with a whole, or calculate percentage change.Percent Change CalculatorUse this percent change calculator to compare an old value with a new value and see the percentage increase or decrease.Average CalculatorUse this average calculator to find the mean, median, count, and sum from numbers separated by commas, spaces, or line breaks.Fraction CalculatorUse this fraction calculator to solve common fraction math and see the simplified fraction, mixed number, and decimal result.Date CalculatorUse this date calculator to add or subtract time from a date and count the days or weeks between two calendar dates.Days Between Dates CalculatorUse this days between dates calculator to count calendar days, weeks, and weekdays between a start date and an end date.Business Days CalculatorUse this business days calculator to count Monday-through-Friday workdays between two dates and subtract known holidays or PTO days.Add Business Days CalculatorUse this add business days calculator to estimate a deadline date after adding workdays to a start date.Countdown CalculatorUse this countdown calculator to see how many days, weeks, or approximate months remain until an event or deadline.Age CalculatorUse this age calculator to find exact age in years, months, and days, total days alive, and days until the next birthday.Time Duration CalculatorUse this time duration calculator to find hours and minutes between two times, subtract breaks, and estimate pay from an hourly rate.Timezone ConverterUse this timezone converter to translate meeting times, travel times, deadlines, and UTC timestamps across cities and daylight saving changes.
Show all 127 tools
Unix Timestamp ConverterUse this Unix timestamp converter to translate API logs, event times, release windows, scheduled jobs, and database timestamps into readable time and back.Hours CalculatorUse this hours calculator to estimate weekly work hours after breaks and calculate weekly pay from an hourly rate.Work Hours CalculatorUse this work hours calculator to estimate weekly and monthly hours from weekday hours, weekend hours, breaks, and hourly rate.Time Card CalculatorUse the simple schedule for repeated shifts, or enter individual daily rows to total weekly or biweekly hours, unpaid breaks, and straight-time gross pay.Time Clock CalculatorUse this time clock calculator to convert clock-in and clock-out times into net daily hours, weekly hours, and gross pay.Lunch Break CalculatorUse this lunch break calculator to subtract lunch and unpaid breaks from a shift and estimate net paid hours.Grade CalculatorUse this grade calculator to estimate the final exam score needed for a target course grade and preview your projected final grade.Final Grade CalculatorUse this final grade calculator to find the final exam score needed for a target grade and test a projected final exam score.Weighted Grade CalculatorUse this weighted grade calculator to combine category scores and weights into an estimated course grade.Gradebook CalculatorUse points-based assignment rows or weighted category rows to estimate the current grade represented by the work entered so far.Test Grade CalculatorUse this test grade calculator to turn points earned and points possible into a percentage score and rough letter grade.GPA CalculatorUse this GPA calculator to estimate semester GPA from up to four classes, credit hours, and letter-grade point values.Tip CalculatorUse this tip calculator to calculate a tip, total bill, and per-person split for restaurants, delivery, rides, and services.Discount CalculatorUse this discount calculator to find the sale price, savings, and estimated total after tax for coupons, markdowns, and shopping deals.Sales Tax CalculatorUse this sales tax calculator to estimate tax and final checkout price after an optional discount.Unit Price CalculatorUse this unit price calculator to find one product's cost per unit or compare two products with different prices and package sizes.Price Per Pound CalculatorFind price per pound, total cost, or weight purchased. Compare packages in pounds, ounces, grams, or kilograms, including pounds plus ounces.Price Per Ounce CalculatorCompare packages labeled in grams, kilograms, ounces, or pounds. Find the lower cost per ounce, then copy or share your result.Price Per Gram CalculatorCompare packages labeled in grams, kilograms, ounces, or pounds. See cost per gram and per 100g, then copy or share your calculation.Price Per Item CalculatorUse this calculator for paper goods, diapers, drinks, batteries, snacks, cleaning supplies, and multipacks.Cost Per Serving CalculatorUse this calculator to compare snack packs, meal prep ingredients, protein powders, family-size items, and grocery deals by serving.Bulk Buy CalculatorUse this calculator before warehouse club, wholesale, pantry, paper goods, or family-size purchases that may not all get used.Coupon Savings CalculatorUse this coupon savings calculator for online carts, grocery deals, promo codes, rewards credits, and sale stacking checks.Sale Comparison CalculatorUse this calculator when one store has a lower sticker price and another has a better discount or coupon.BOGO CalculatorUse this BOGO calculator for buy-one-get-one-free, buy-two-get-one, and similar retail promotions.Cashback CalculatorUse this calculator for credit card cashback, shopping portals, app rewards, and statement credit offers.Grocery Budget CalculatorUse this grocery budget calculator to separate food-at-home planning from restaurants, delivery, household supplies, and personal care.Grocery Savings PlannerUse this grocery savings planner to estimate realistic food-at-home savings from meal planning, coupons, bulk buys, and reduced waste.Grocery Price Book CalculatorUse this grocery price book calculator to track unit prices and decide whether a current sale is a stock-up price, a good sale, or worth waiting on.Grocery List Cost CalculatorUse this calculator before shopping to estimate the cart total and spot whether household items are inflating the grocery bill.Meal Cost CalculatorUse this calculator for family dinners, meal prep, catering estimates, recipe budgeting, or comparing cooking at home with takeout.Pantry Inventory Value CalculatorUse this calculator to understand how much value is sitting in pantry, freezer, and backstock before buying more.Gas Trip Cost CalculatorUse this gas trip cost calculator to estimate gallons, total fuel cost, cost per mile, and cost per person for a drive.Fuel Economy CalculatorUse this fuel economy calculator to turn miles driven, gallons used, gas price, and annual miles into MPG and fuel cost estimates.Gas Cost per Month CalculatorUse this gas cost per month calculator to estimate a monthly fuel budget from driving miles, MPG, and gas price.Parking Cost CalculatorUse this parking cost calculator to compare hourly parking against a monthly pass before commuting, visiting downtown, or budgeting garage fees.Toll Cost CalculatorUse this toll cost calculator to estimate recurring bridge, tunnel, highway, or express-lane tolls for a commute or regular route.Download Time CalculatorUse this download time calculator to estimate how long games, videos, backups, installers, or large files will take to download.Data Usage CalculatorUse this data usage calculator to estimate whether household internet, mobile hotspot, or home broadband usage may approach a monthly data cap.Electricity Cost CalculatorUse this electricity cost calculator to estimate appliance energy use and cost from watts, hours per day, days used, and cents per kWh.Electricity Bill CalculatorUse this electricity bill calculator to turn monthly kWh and your utility rate into a simple bill estimate.Appliance Wattage CalculatorUse this appliance wattage calculator to estimate what a device costs to run from its wattage and daily use.Laundry Cost CalculatorUse this laundry cost calculator to estimate what laundry costs per load, month, and year from energy, water, sewer, and detergent assumptions.Dishwasher Cost CalculatorUse this dishwasher cost calculator to estimate per-cycle and monthly dishwasher cost from energy, water, sewer, and detergent assumptions.Shower Cost CalculatorEstimate water use and cost per shower in gallons or liters, choose electric or custom water-heating costs, and compare 5, 10, 15, 30, 40, and 60-minute showers.Water Bill CalculatorUse this water bill calculator to estimate household water and sewer cost from gallons and local rates.Natural Gas Bill CalculatorUse this natural gas bill calculator to estimate monthly gas cost from therm usage and your local rate.Trash Bill CalculatorUse this trash bill calculator to estimate garbage, recycling, or waste service charges when comparing providers or splitting household bills.Utility Bill Split CalculatorUse this utility bill split calculator to divide monthly household bills between roommates or household members.Internet Bill Split CalculatorUse this internet bill split calculator to divide Wi-Fi or broadband costs fairly between roommates.Cleaning Service Cost CalculatorUse this cleaning service cost calculator to estimate a house cleaning quote or compare hourly cleaning options before booking.Moving Supply Cost CalculatorUse this moving supply cost calculator to budget boxes, tape, packing paper, bubble wrap, and extra supplies before a move.Home Project Cost PlannerUse this home project cost planner to frame a project budget before buying materials, requesting quotes, or comparing contractor estimates.Square Footage CalculatorUse this square footage calculator to multiply length by width in feet or meters, total multiple spaces, and estimate material cost.Paint CalculatorUse this paint calculator to estimate wall area in square feet or square meters, gallons of paint needed, and paint cost before buying supplies.Room Paint CalculatorUse this room paint calculator when you know room dimensions in feet or meters and want a quick gallons-and-cost estimate.Concrete CalculatorUse this concrete calculator for slabs, patios, footings, and pads by entering length, width, depth, waste, and price per cubic yard or cubic meter.Concrete Slab Cost CalculatorUse this concrete slab cost calculator to turn feet or meter dimensions, depth, waste, and unit prices into a practical project budget.Flooring CalculatorUse this flooring calculator to estimate area, waste allowance, box count, and material cost for flooring projects in feet or meters.Carpet CalculatorUse this carpet calculator to estimate how many square yards of carpet to order before comparing material and installation quotes.Wallpaper CalculatorUse this wallpaper calculator to estimate roll count before buying wallpaper for a room or accent wall.Drywall CalculatorUse this drywall calculator to turn room dimensions into a quick drywall sheet and starter material estimate.Deck Board CalculatorUse this deck board calculator to estimate how many decking boards to buy before pricing lumber or composite boards.Paver CalculatorUse this paver calculator to estimate paver count and base materials before buying patio, walkway, or path materials.Countertop CalculatorUse this countertop calculator to estimate countertop area in feet/inches or meters/centimeters before comparing material and installation quotes.Roofing Shingle CalculatorUse this roofing shingle calculator as a rough material check before comparing shingle bundles or contractor quotes.Tile CalculatorUse this tile calculator to estimate how many tiles or boxes to buy before starting a floor, wall, bathroom, or backsplash project.Mulch CalculatorUse this mulch calculator to estimate how much mulch you need from bed length, width, and depth in feet/inches or meters/centimeters.Mulch Bag CalculatorUse this mulch bag calculator when you are buying bagged mulch instead of bulk cubic yards or cubic meters.Gravel CalculatorUse this gravel calculator to estimate cubic yards or cubic meters, tons or tonnes, and material cost for paths, driveways, beds, and base layers.Soil CalculatorUse this soil calculator to estimate how many bags of soil, compost, or topsoil to buy using square feet and inches or square meters and centimeters.Sod CalculatorUse this sod calculator to estimate sod rolls, order area, and material cost for a lawn project in square feet or square meters.Fence Cost CalculatorUse this fence cost calculator to estimate panels, posts, gates, and total cost before requesting quotes.Fahrenheit to Celsius CalculatorUse this Fahrenheit to Celsius calculator for quick weather, cooking, science, and temperature conversions.Unit ConverterUse this unit converter for quick length, weight, volume, temperature, and speed conversions.Inches to Centimeters CalculatorUse this inches to centimeters calculator for measurements, clothing sizes, screens, furniture, and school math.Pounds to Kilograms CalculatorUse this pounds to kilograms calculator to convert lb to kg with a visible formula. The conversion rule and assumptions remain visible.Miles to Kilometers CalculatorUse this miles to kilometers calculator to convert mi to km with the formula shown. The conversion rule and assumptions remain visible.Cups to Tablespoons CalculatorUse this cups to tablespoons calculator to convert US cup measurements to tablespoons.Cups to Grams CalculatorUse this cups to grams calculator for common cooking and baking ingredients where ingredient density changes the conversion.Cooking Conversion CalculatorUse this cooking conversion calculator to convert teaspoons, tablespoons, cups, ounces, grams, milliliters, and recipe serving amounts.Recipe ScalerUse this recipe scaler to resize recipes for more or fewer servings and convert each ingredient by the same multiplier.Moving Box CalculatorUse this moving box calculator to plan packing supplies before buying boxes or comparing moving kits.Moving Truck Size CalculatorUse this moving truck size calculator to estimate whether a 10 ft, 15 ft, 20 ft, or 26 ft rental truck is a better fit, with metric display available.Storage Unit Size CalculatorUse this storage unit size calculator to choose a practical unit size before renting storage during a move, renovation, or decluttering project, with results in feet or meters.Drive Time CalculatorUse this drive time calculator to turn distance and average speed into a realistic trip duration with stops and buffer included.Miles Per Year CalculatorUse this miles per year calculator to estimate vehicle usage for maintenance, insurance, lease planning, and fuel budgeting.EV Charging Cost Calculator for Tesla and Other EVsUse this EV charging cost calculator for Tesla and other EVs to estimate trip and monthly costs from vehicle energy use and local electricity prices.Carpooling CalculatorUse this carpooling calculator to compare solo commuting with shared rides before changing a commute plan.Engine Hours to Miles ConverterUse this engine-hours-to-miles converter when runtime is known but odometer mileage is missing or incomplete.Boat Speed CalculatorUse this boat speed calculator to turn route distance and elapsed time into knots, mph, and current-adjusted speed estimates.Nautical Mile CalculatorUse this nautical mile calculator to normalize marine or air distances before estimating speed, time, or range.Tire Size CalculatorUse this tire size calculator to compare tire dimensions before planning fitment, gearing, or speedometer changes.Traffic Density CalculatorUse this traffic density calculator to translate a vehicle count into a lane-density estimate for planning and comparison.Acreage CalculatorUse this acreage calculator to turn lot, field, yard, or project dimensions into acres before planning materials or comparing land sizes.Area ConverterUse this area converter to normalize property, room, material, map, and metric area measurements into the unit you need.Length ConverterUse this length converter to switch between U.S. customary and metric distances before reading plans, labels, maps, or measurements.Feet to Inches CalculatorUse this feet-to-inches calculator to normalize height, room, product, and plan measurements into total inches.Cubic Feet CalculatorUse this cubic feet calculator to estimate volume for storage, shipping, rooms, boxes, soil, mulch, and material planning.Grams to Ounces CalculatorUse this grams-to-ounces calculator to compare recipe, package, postal, product, and precious-metal weights with the correct ounce type.Commute CalculatorUse this commute calculator to turn distance and speed assumptions into a realistic schedule cost before comparing routes, jobs, or work patterns.Speed CalculatorUse this speed calculator to turn distance and elapsed time into a comparable travel rate for routes, workouts, trips, or planning checks.Pixels to Inches ConverterUse this pixels-to-inches converter to estimate print or display dimensions when you know the pixel count and intended PPI or DPI.Cubic Meter CalculatorUse this cubic meter calculator to estimate volume for rooms, boxes, storage, freight, and materials when metric volume is needed.Ares to Hectares ConverterUse this ares-to-hectares converter to normalize land-area measurements before comparing fields, parcels, gardens, or metric property records.Inches to Fraction CalculatorUse this inches-to-fraction calculator to translate decimal measurements into practical fractional inches for woodworking, fabrication, and layout work.Decimeter to Meter ConverterUse this decimeter-to-meter converter to normalize metric length measurements before checking drawings, lab notes, classroom work, or material dimensions.Decagram to Gram ConverterUse this decagram-to-gram converter to standardize metric mass values before comparing recipes, package weights, lab notes, or inventory counts.Gallon CalculatorUse this gallon calculator to compare liquid volume units before planning storage, mixing, fuel, aquarium, garden, or procurement quantities.Cubic Yards to Tons CalculatorUse this cubic-yards-to-tons calculator to translate bulk volume into load weight before ordering, hauling, delivery, or material budgeting.Gallons to Pounds ConverterUse this gallons-to-pounds converter when storage, shipping, mixing, or load planning depends on both liquid volume and density.Astronomical Unit CalculatorUse this astronomical unit calculator to translate solar-system distances into everyday distance units without losing the AU reference.Mesh to Micron ConverterUse this mesh-to-micron converter for quick filtration, particle-size, and material screening comparisons before checking the exact sieve specification.Miles to Dollars CalculatorUse this miles-to-dollars calculator to turn route length or recurring mileage into a clear cost estimate before comparing travel, delivery, or reimbursement scenarios.Ounces to Cups ConverterUse this ounces-to-cups converter when a recipe, label, or batch note gives liquid volume in fluid ounces and you need practical kitchen units.
How to use this hub
Pick the tool by task, then check the assumptions.
Everyday calculators are for fast, practical checks: shopping math, date math, home project quantities, unit conversions, grades, work hours, moving, and other tasks where a visible formula is more useful than a long article.
Percentage, date, unit price, grocery price book, home project cost planner, square footage, concrete, paint, time card, and moving calculators cover the broadest everyday use cases.
Project and shopping estimates depend on units, waste, local prices, and rounding. Keep those assumptions visible before ordering or budgeting.
Common tasks
Start with the job, then open the matching tool.
Find the matching calculator for a specific question.
Compare unit prices, sale prices, coupons, bulk buys, and grocery list totals before checkout.
Estimate area, paint, concrete, flooring, mulch, tile, gravel, soil, and moving materials with units visible.
Use quick calculators for dates, durations, grades, work hours, and common conversions.