Everyday Utilities

Exact age in years, months & days.

Percentages, changes, and X% of Y.

Add days to a date or find duration.

Calculate profit margin & markup.

Calculate final price & savings.

Calculate restaurant tips & split bills.

Find proportional dimensions.

Solve proportional problems.

Add/subtract time durations.

Convert local time globally.

Standard math operations.

Advanced math operations.

Check prime or composite.

Create 1D barcodes instantly.

Live scoreboard & leaderboard.

Watch sorting algorithms in real-time.

ABC flashcards with emojis & sound.

Convert numbers to English words.

Numbers to Roman numerals.

Weighted CGPA from subject credits & grade points.

Weighted SGPA for a single semester.

US 4.0-scale GPA from courses & letter grades.

Current attendance % & classes to hit target.

Percentage & grade from marks across subjects.

Duration between two clock times.

Days, weeks, months & years between two dates.

Least Common Multiple with factorization steps.

Roots, discriminant & vertex form for ax²+bx+c=0.

Mean, sum & count from a list of numbers.

Middle value from a list of numbers.

Simplify a ratio or scale it to a total.

Length, weight, temperature, area, volume, speed & time.

Format dates in multiple styles at once.

Live countdown to your next birthday.

View & sort CSV data as a table.

Estimate download time from file size & speed.

Greatest Common Divisor with Euclidean steps.

Population & sample stddev with variance.

Population & sample variance with stddev.

Break a number into its prime factors.

Add, subtract, multiply & divide binary numbers.

Standard score, percentile & interpretation.

Calculate percentage increase or decrease.

Add, subtract, multiply & divide hex.

Generate random US addresses.

Calculate acceleration, velocity & distance.

Screen width, height & area from diagonal.

Calculate watts, amps or volts.

Find your zodiac sign from your birthday.

Estimate solar panels needed for your home.

Plan staircase steps, risers, and stringer length.

Estimate battery runtime for your load.

Compute combinations (nCr) and permutations (nPr).

Measure body fat distribution (WHR).

Find pixels per inch for printing.

Find ohms from voltage and current.

Life path, name & personality numbers.

Estimate gallons and cost for a room.

Estimate carpet for multiple rooms.

Estimate AdSense earnings from views.

Estimate your car's value over time.

Calculate sales commission and splits.

Estimate annual property tax by mill rate or effective rate.

Calculate voltage drop for wire runs.

Convert dog years to human years.

Convert annual salary to monthly, weekly, daily & hourly.

Format time in 24h, 12h, epoch & words.

Translate English to Braille and back.

Generate invisible and zero-width text.

Convert HTML to Markdown in real time.

Estimate tank volume, capacity & water weight.

Estimate concrete volume, bags & cost.

Calculate revenue, discounts & profit.

Solve V, I, R & P with one unknown.

Performance rating & expected score.

Estimate shipping cost by weight & distance.

Find density, mass or volume + material match.

Estimate cement bags, sand and aggregate.

Count bricks + mortar for any wall.

Find water volume inside a pipe.

Weigh a pipe by size and material.

Estimate appliance kWh usage + cost.

Estimate your monthly bill from readings.

Find % drop between two values.

Convert number words to digits.

Measure likes/comments vs followers.

Live countdown to the next total solar eclipse.

Convert watts, horsepower, BTU/hr & more.

Estimate sand volume & weight needed.

Find your Western zodiac sign from birth date.

Calculate tank volume in gallons or liters.

Convert decimals to simplified fractions.

Convert MPG, L/100km & km/L.

Calculate gear ratio & compound ratios.

Find AWG wire gauge from current & voltage drop.

Compare prices per unit between two products.

Calculate nPr permutations step by step.

Convert mph, km/h, m/s, knots & ft/s.

Calculate torque from force & lever arm.

Convert between frequency & wavelength.

Estimate time to fully charge a battery.

Find the most frequent value(s) in a list.

Single, joint & combined event probability.

Estimate flight duration from distance & speed.

Find the right series resistor for an LED.

Slope, intercept & R² from data points.

Calculate the geometric mean of a data set.

Solve for velocity, distance, or time.

Convert between period and frequency, or solve wave speed.

Live countdown to any date and time.

How much paint you need for your walls.

Total weight of paper from GSM and sheet count.

Overall percentage and weighted average across exams.

Convert cat years to human years.

Compare a measured value to the accepted value.

Physics work done from force, distance, and angle.

Score you need on your final to hit a target grade.

Convert Joules, Calories, kWh, BTU & more.

Number of tiles needed for a room.

Number of flooring boxes needed for a room.

Estimate download/upload time or required speed.

Pool volume in gallons or liters.

Simplify any multi-term ratio using GCD.

Solve for force, mass, or acceleration (F = ma).

Estimate wind force on a surface.

Estimate speech length from word count and pace.

Find a scale factor or a scaled/original dimension.

Estimate asphalt tonnage from area and thickness.

Size an air conditioner for a room.

Calculate volumetric flow rate from pipe size and velocity.

Calculate an average where values carry different weights.

Solve for kinetic energy, mass, or velocity.

Estimate CPU/GPU bottleneck risk by tier and resolution.

Convert running/walking pace to speed and back.

Find probability density and cumulative probability.

Solve for momentum, mass, or velocity.

Calculate solenoid inductance from turns and geometry.

Calculate net paintable wall area minus openings.

Calculate horsepower from torque and RPM.

Calculate a screen's pixels per inch (PPI).

Calculate camera field of view from sensor and focal length.

Calculate rebar pieces needed for a slab grid.

Size an inverter from your appliance load.

Calculate your current overall grade from category weights.

Calculate a confidence interval for a sample mean.

Calculate the Pearson correlation coefficient (r).

Calculate parallel plate capacitor capacitance.

Convert step count into walking distance.

Find the focal length needed for a shot.

Estimate how many pavers you need.

Find the right curtain fabric width.

Find the right ceiling fan blade span.

Calculate the harmonic mean of a list.

Calculate gravitational potential energy.

Aggregate marks across a full semester.

Estimate upload time from file size & speed.

Estimate beam bending moment & deflection.

Calculate RAM capacity & memory bandwidth.

Estimate mulch volume & bag count.

Track your remaining leave balance.

Calculate a room's air volume.

Convert a human age to cat years.

Find your payoff time or required payment.

Find the real cost per use of an item.

Calculate fertilizer needed for your lawn.

Compare two tire sizes & speedo error.

Calculate gravel volume & weight needed.

Generate a Roman numeral from a number.

Calculate lumens and fixtures needed.

Calculate rolls needed for a room.

Calculate usable coverage per roll.

Size a backup generator for your home.

Calculate recommended daily study hours.

Calculate deck boards and linear footage.

Calculate engine compression ratio.

Calculate flow rate from a timed test.

Convert ring sizes between US, UK, EU & mm.

Convert clothing sizes between regions.

Roof area, squares, and shingle bundles needed.

Solve the exposure triangle (aperture, shutter, ISO).

Total cable length to buy for a run.

Delay speaker timing from distance & temperature.

Estimated cook times by food, weight & method.

Compare fuel cost between two vehicles.

Recommended CADR for your room size.

Total LED power draw and running cost.

Boxes per layer and total per pallet.

Brown & green material by target ratio.

Watering time and water volume needed.

Max students by seating arrangement.

Perimeter from room length and width, or wall segments.

Riser height, tread depth, and stringer length.

Solve for watts, volts, or amps.

Look up a city's timezone and live local time.

Simplified structural load estimate for a column.

Near/far focus limits from focal length & aperture.

Pixel dimensions for a banner at a target DPI.

Compare pizza sizes by price per square inch.

Percentage-to-letter-grade lookup.

Effective DPI (eDPI) and sensitivity matching.

How many cinder blocks & mortar bags for a wall.

Calculate topsoil volume & weight needed.

Total area of a yard made of multiple shapes.

Fence panels & posts needed for a yard.

Recommended heater BTU capacity for a room.

Daily hay & forage amount for a horse.

Check bags against an airline weight limit.

Paid hours worked for a payroll timesheet.

Pack weight as a % of your body weight.

Paint needed for a ceiling, by room size.

Total glazing area across multiple windows.

Drywall sheets needed from wall area.

Insulation needed for a target R-value.

Floor space needed from pallets or inventory.

Full fence materials list: panels, posts & more.

Full deck materials list: boards, joists & more.

Estimated runtime from capacity & power draw.

Estimated data usage from daily activities.

PC running cost from idle & load power draw.

Soil volume needed for a garden bed.

Estimate tree height using the angle method.

Recommended fuse rating from load current.

Daily, monthly & annual cost for any appliance.

Recommended fridge capacity by household size.

Probability of k successes in n trials.

Solve for force, mass, velocity, or radius.

Stereo speaker placement using the triangle rule.

Compression ratio & space saved for files.

Estimate roof snow load from depth & density.

Whole-home electricity usage & cost estimate.

Sod rolls and pallets needed for your lawn.

Estimate grout needed for a tiling job.

Sheets needed to cover an area, with waste %.

Age gap between two birthdates.

US, UK & international hat sizes.

Carpet area to built-up area (India).

Carpet to super built-up area (India).

Megapixels from pixel dimensions, or reverse.

CoC value from sensor format.

Monthly/annual printer ink cost.

Coffee-to-water brew ratios.

Scale recipe ingredients to any serving size.

Convert recipes between pan sizes.

XP needed to reach a target game level.

Block-by-block circle outlines to build.

Estimate hike duration with Naismith's Rule.

Total hotel cost with tax & fees.

Split road-trip fuel cost by distance.

YouTube's official thumbnail size guidelines.

View-based TikTok engagement rate.

Tiered, quantity-based wholesale pricing.

Stack multiple coupons applied in sequence.

Door area with common size presets.

How many items fit in a carton.

Driveway area, including a second section.

Running cost from wattage & duty cycle.

Weekly, monthly & annual laundry running cost.

TV running cost by size/type & hours watched.

Cost to charge a phone from battery capacity.

Data usage by video quality tier.

Data usage by audio quality/bitrate tier.

Reams & cases needed from print volume.

Total cards & boxes needed for a team.

Printing cost from banner size & price per sq ft.

Die-cut sticker cost with quantity discount tiers.

Roll-based label cost from rolls needed.

Grass seed needed for new lawns or overseeding.

Time to fill a tank from volume and fill rate.

Adjust cook time for a different microwave wattage.

Convert oven temp and time to air fryer settings.

Water, time, and yield by rice type.

Dry pasta needed by guest count and portion size.

How many people a cake pan size serves.

Drinks needed for an event, plus bottle counts.

Food needed by guest count and meal context.

Tables needed by guest count and table size.

Shelves needed by book count and spine width.

Pallet capacity from warehouse floor area.

IQR and outliers from a data set.

Recommended TV viewing distance by resolution.

Full-frame equivalent focal length by sensor.

Photos or video minutes that fit on a card.

Gallons harvested from roof area and rainfall.

Estimated max occupancy from floor area and use type.

Split available study time across subjects.

Project finish date from your current reading pace.

Reading pace needed to hit a deadline.

Daily, monthly, and annual water heating cost.

Cost savings from switching to LED.

How many beds fit in your garden plot.

How many plants fit a bed at proper spacing.

Check if your gutter size can drain your roof.

Check voltage drop for a cord length and gauge.

Browse every timezone with live local times.

Look up ZIP codes for major US cities.

Find the ISO 8601 week number for any date.

Find what day of the week any date falls on.

Convert between month numbers and month names.

Find your Chinese zodiac animal from your birth year.

Find your traditional birth flower by month.

Check donor-recipient blood type compatibility.

Recommended tie length based on your height.

Find your traditional lucky color by zodiac sign.

Look up size, lifespan & temperament by breed.

Look up size, lifespan & coat type by breed.

Search a country to see its flag emoji.

Search a country or capital city to find the other.

Convert between 12-hour and 24-hour time.

See one date in 5 common formats at once.

List every weekend date within a date range.

Compute US federal holiday dates for any year.

Tap to log glasses toward a daily hydration goal.

Show only the first/last characters of a password.

Generate arithmetic, geometric & Fibonacci sequences.

Online countdown timer.

Online stopwatch with laps.

Pomodoro technique timer.

World clock and local time.

Color screens, pixel test, DVD screensaver & pranks.

Fullscreen tip screen — for real tipping or a joke.

Plain fullscreen black.

Plain fullscreen blue.

Chroma-key green for video calls.

Plain fullscreen red.

Plain fullscreen orange.

Plain fullscreen pink.

Plain fullscreen purple.

Plain fullscreen yellow.

Warm fullscreen light for video calls.

Find stuck or dead pixels on your monitor.

The classic bouncing DVD logo.

Fake cracked-screen prank.

Fake BSOD prank.

Fake Windows update prank.

Fake error screen prank.

Fake Windows update prank.