🧰
General-Purpose Calculators
201+ calculators
🚘
Transportation
(32) 🔧
0-60 Calculator Calculate 0-60 mph time from horsepower and weight.
🔧
Boat Speed Calculator Estimate boat speed from horsepower and weight.
🔧
Boost Horsepower Calculator Calculate horsepower gain from forced induction boost.
🔧
BSFC Calculator Calculate brake specific fuel consumption.
🔧
Carpooling Calculator Calculate savings from carpooling.
🔧
Commute Calculator Calculate time and cost of your commute.
🔧
Compression Ratio Calculator Calculate engine compression ratio from cylinder volumes.
🔧
Compression Ratio to PSI Calculator Estimate cylinder pressure from compression ratio.
🔧
Crosswind Calculator Calculate crosswind component for landing.
🔧
Drive Time Calculator Calculate driving time from distance and speed.
🔧
Horsepower Calculator Calculate horsepower from torque and RPM.
🔧
Engine Hours to Miles Converter Convert engine hours to equivalent miles.
🔧
Flight Radiation Calculator Estimate cosmic radiation exposure during a flight.
🔧
Fuel Pump Calculator Calculate required fuel pump flow rate.
🔧
Gas Calculator Calculate trip gas cost and fuel needed.
🔧
GVWR Calculator Calculate gross vehicle weight rating from axle weights.
🔧
Miles per Year Calculator Calculate annual mileage from daily commute.
🔧
Miles to Dollars Calculator Convert miles driven to fuel cost.
🔧
MPG Calculator Calculate miles per gallon from distance and fuel used.
🔧
Nautical Mile Calculator Convert nautical miles to statute miles and kilometers.
🔧
RPM Calculator Calculate RPM from speed, gear ratio, and tire size.
🔧
Speed Calculator Calculate speed from distance and time.
🔧
Speedometer Gear Calculator Calculate correct speedometer gear ratio.
🔧
Tesla Charging Cost Calculator Calculate Tesla charging cost and time.
🔧
Ticket Optimizer Compare ticket vs. fine cost to save money.
🔧
Tire Size Calculator Calculate tire dimensions from size notation.
🔧
Traffic Density Calculator Calculate traffic density from flow and speed.
🔧
Turbo Size Calculator Estimate turbocharger size for target horsepower.
🔧
Wheel Horsepower Calculator Estimate wheel HP from crank HP and drivetrain loss.
🔧
Wheel Offset Calculator Calculate wheel offset and backspacing.
🔧
Winch Size Calculator Calculate recommended winch capacity.
🔧
Windsock Calculator Estimate wind speed from windsock angle.
👗
Clothing & Sewing
(29) 🔧
Bag Calculator Calculate fabric and supplies for making a bag.
🔧
Belt Size Calculator Determine belt size from pants size or waist.
🔧
Bikini Calculator Calculate bikini size from bust, waist, and hips.
🔧
Bra Size Calculator Calculate bra size from band and bust measurements.
🔧
Circle Skirt Calculator Calculate fabric needed for a circle skirt.
🔧
Cross-Stitch Calculator Calculate cross-stitch project size and thread needed.
🔧
Curtain Panel Calculator Calculate fabric needed for curtain panels.
🔧
Curtain Size Calculator Determine correct curtain size for windows.
🔧
Dress Size Calculator Estimate dress size from body measurements.
🔧
Fabric Calculator Calculate fabric needed for sewing projects.
🔧
Glove Size Calculator Determine glove size from hand measurements.
🔧
Half Square Triangle Calculator Calculate fabric for half square triangles.
🔧
Hat Size Calculator Determine hat size from head circumference.
🔧
Hexagon Quilt Calculator Calculate fabric for hexagon quilts.
🔧
Jacket Size Calculator Determine jacket size from chest measurement.
🔧
Jeans Size Calculator Determine jeans size from waist and inseam.
🔧
Lost Socks Calculator Calculate how many socks go missing annually.
🔧
Pleated Skirt Calculator Calculate fabric for pleated skirts.
🔧
Quilt Calculator Calculate fabric needed for a quilt.
🔧
Quilt Binding Calculator Calculate binding length for a quilt.
🔧
Quiz: Fabric Calculator Guess fabric needed for common projects.
🔧
Ring Size Converter Convert ring circumference to ring size.
🔧
Shoelace Length Calculator Find correct shoelace length for shoes.
🔧
Shoe Size Conversion Convert shoe sizes between US, EU, UK.
🔧
Sock Size Calculator Determine sock size from shoe size.
🔧
Sunglasses Size Calculator Find correct sunglass size from face width.
🔧
Tablecloth Size Calculator Determine tablecloth size for a table.
🔧
Tie Length Calculator Determine correct tie length from height.
🔧
Weighted Blanket Calculator Calculate weight for a weighted blanket.
🏡
Home Economics
(33) 🔧
Appliance Depreciation Calculator Calculate appliance value over time.
🔧
Appliance Wattage Calculator Calculate energy consumption of appliances.
🔧
Back to School Calculator Estimate back-to-school shopping costs.
🔧
Balloon Arch Calculator Calculate balloons needed for an arch.
🔧
Bathroom Mirror Size Calculator Determine ideal mirror size for vanity.
🔧
Bean Bag Filling Calculator Calculate filling needed for a bean bag.
🔧
Bed Size Calculator Determine bed size from room dimensions.
🔧
Blind Size Calculator Determine correct window blind size.
🔧
Cord of Wood Calculator Calculate cords of wood from stack dimensions.
🔧
Data Usage Calculator Estimate monthly data usage from activities.
🔧
Dilution Ratio Calculator Calculate mixing ratios for cleaning solutions.
🔧
Electricity Cost Calculator Calculate electricity cost for appliances.
🔧
Electricity Cost – Single Usage Calculator Calculate cost of a single appliance use.
🔧
EUI Calculator – Energy Use Intensity Calculate energy use intensity for buildings.
🔧
Gas vs Electric Dryer Calculator Compare cost of gas vs electric dryers.
🔧
Generator Wattage Calculator Calculate generator size needed for appliances.
🔧
Grocery Calculator Calculate grocery spending and savings.
🔧
Hot Tub Cost Calculator Calculate hot tub operating cost.
🔧
House Cleaning Cost Calculator Estimate house cleaning service cost.
🔧
How Many Tables Calculator Calculate tables needed for an event.
🔧
LED Savings Calculator Calculate savings from switching to LED bulbs.
🔧
Lighting Calculator Calculate lumens needed for a room.
🔧
Lumens to Watts Converter Convert lumens to approximate watts.
🔧
Microwave Wattage Converter Convert cooking times between microwave wattages.
🔧
Period Products Cost Calculator Calculate cost of period products over time.
🔧
Pool Salt Calculator Calculate salt needed for a saltwater pool.
🔧
Pool Shock Calculator Calculate shock treatment needed for a pool.
🔧
Quit Smoking and Save Calculator Calculate savings from quitting smoking.
🔧
Recessed Lighting Calculator Calculate number of recessed lights needed.
🔧
Roll Length Calculator Calculate remaining length on a roll.
🔧
Rug Size Calculator Determine correct rug size for a room.
🔧
Sofa Size Calculator Determine sofa size for a room.
🔧
Unit Price Calculator Calculate price per unit to compare products.
💼
Office & Productivity
(23) 🔧
Acceptance Rate Calculator Calculate college or job acceptance rate.
🔧
Cycle Time Calculator Calculate cycle time for manufacturing or tasks.
🔧
Deadline Calculator Calculate deadline from start date and workdays needed.
🔧
Desk Height Calculator Find ideal desk height for your height.
🔧
Time Spent on Email Calculator Calculate time spent on email.
🔧
English Learning Time Calculator Estimate time to learn English.
🔧
GMAT Score Calculator Estimate GMAT score from practice test results.
🔧
GWAM Calculator Calculate gross words per minute typing speed.
🔧
Keystrokes per Hour Calculator Calculate keystrokes per hour from WPM.
🔧
Lead Time Calculator Calculate lead time for orders.
🔧
Meeting Cost Calculator Calculate cost of a meeting.
🔧
Money Weight Calculator Calculate weight of cash in different denominations.
🔧
Numbers to Words Converter Convert numbers to English words (e.g., 42 → forty-two).
🔧
Paper Thickness Calculator Calculate paper thickness from pages.
🔧
Paper Weight Calculator Calculate weight of paper for printing.
🔧
Pomodoro Technique Calculator Calculate work sessions using Pomodoro technique.
🔧
Reverse Text Generator Reverse a number (simulated).
🔧
SAT Score Calculator Estimate SAT score from correct answers.
🔧
Slack Time Calculator Calculate slack time in project scheduling.
🔧
Social Media Ban Impact Calculator Calculate time saved from social media ban.
🔧
Standing Desk Height Calculator Find ideal standing desk height.
🔧
Time Card Calculator Calculate total hours from start and end times.
🔧
Words per Minute Calculator Calculate reading or typing speed in WPM.
🧩
Leisure & Fun
(27) 🔧
Audiobooks Calculator Calculate time saved with audiobooks at higher speed.
🔧
Beach Price Index Calculator Compare cost of a beach vacation.
🔧
Bold Text Generator Generate bold text from numbers (simulated).
🔧
Clay Shrinkage Calculator Calculate clay shrinkage during firing.
🔧
Cursive Text Generator Generate cursive text from numbers (simulated).
🔧
Drake Equation for Love Calculator Estimate chance of finding love in a city.
🔧
Glitch Text Generator Generate glitch text from numbers (simulated).
🔧
Hammock Hang Calculator Calculate hammock hanging distance.
🔧
Harry Potter Currency Calculator Convert Galleons, Sickles, and Knuts.
🔧
Helium Balloons Calculator Calculate balloons needed to lift an object.
🔧
Italic Text Generator Generate italic text from numbers (simulated).
🔧
The Lord of the Rings Calculator Calculate marathon viewing time for LOTR.
🔧
NATO Phonetic Alphabet Translator Convert numbers to NATO codewords (simulated).
🔧
Oscar Marathon Calculator Calculate time to watch all Best Picture winners.
🔧
Pig Latin Translator Convert numbers to pig latin (simulated).
🔧
Podcast Calculator Calculate podcasts you can listen to in available time.
🔧
Quarantine Binge Watching Calculator Calculate how much you can binge during quarantine.
🔧
Quarantine Silver Lining Calculator Calculate positive activities during quarantine.
🔧
Social Media Time Alternatives Calculator Calculate alternatives to social media time.
🔧
Star Wars Marathon Calculator Calculate time to watch all Star Wars films.
🔧
Tent Size Calculator Determine tent size for number of campers.
🔧
The Witcher Calculator Calculate The Witcher marathon time.
🔧
TV Alternatives Calculator Calculate alternatives to TV time.
🔧
TV Series Duration Calculator Calculate total time to watch a TV series.
🔧
Underline Text Generator Generate underlined text from numbers (simulated).
🔧
Upside-Down Text Generator Generate upside-down text from numbers (simulated).
🔧
Yes or No Generator Make a random decision based on a number.
🧼
Personal Hygiene
(8) 🔧
Bath vs Shower Calculator Compare water usage of baths vs showers.
🔧
Beauty Products Calculator Calculate cost per use of beauty products.
🔧
Coronavirus Mask Calculator Calculate masks needed for a period.
🔧
Hair Growth Calculator Calculate time to grow hair to desired length.
🔧
Shower Cost Calculator Calculate cost of showering.
🔧
Sunscreen Calculator Calculate sunscreen needed per application.
🔧
Toilet Paper Calculator Calculate toilet paper usage and cost.
🔧
Toothpaste Calculator Calculate toothpaste usage and tube life.
⏳
Time & Date
(32) 🔧
8-Hour Shift Calculator Calculate end time from start time and shift length.
🔧
Add Time Calculator Add hours and minutes together.
🔧
Age Difference Calculator Calculate age difference in years and days.
🔧
Anniversary Calculator Calculate days since an anniversary date.
🔧
Baby Age Calculator Calculate baby age in months and weeks.
🔧
BC to AD Calculator Calculate years between BC and AD dates.
🔧
Birthday Calculator Find days until next birthday.
🔧
Business Days Calculator Calculate business days between dates.
🔧
Calendar Calculator Calculate what day a date falls on.
🔧
Chronological Age Calculator Calculate exact age in years, months, days.
🔧
Date Calculator Add or subtract days from a date.
🔧
Date To Date Calculator Calculate days between two dates.
🔧
Day Counter Count days between two dates.
🔧
Day of the Year Calculator Find day number in a year.
🔧
Every Second Calculator Calculate what happens every second.
🔧
Hours Calculator Calculate total hours between times.
🔧
Hours and Minutes Calculator Add and convert hours and minutes.
🔧
Korean Age Calculator Calculate Korean age from birth year.
🔧
Leap Year Calculator Check if a year is a leap year.
🔧
Lunar Age Calculator Calculate lunar age from birth date.
🔧
Minute Calculator Calculate minutes between two times.
🔧
Month Calculator Count months between dates.
🔧
Moon Phase Calculator Estimate moon phase for a given date.
🔧
Palindrome Date Finder Check if a date is a palindrome.
🔧
Reverse Time Calculator Find start time given end time and duration.
🔧
Sidereal Time Calculator Estimate local sidereal time.
🔧
Subtract Time Calculator Subtract time durations.
🔧
Time Calculator Add or subtract time values.
🔧
Time Difference Calculator Calculate time difference between two times.
🔧
Time Duration Calculator Calculate duration between two date-times.
🔧
Time to Decimal Calculator Convert time to decimal hours.
🔧
Week Calculator Calculate weeks between dates.
📚
Books & Reading
(7) 🔧
Audiobook Speed Calculator Calculate listening time at different speeds.
🔧
Louise Glück Poetry Calculator Calculate time to read Louise Glück poems.
🔧
Olga Tokarczuk Books Calculator Calculate time to read Olga Tokarczuk books.
🔧
Quarantine Books Calculator Calculate how many books you can read in quarantine.
🔧
Reading Challenge Calculator Track reading goal progress.
🔧
Reading Speed Calculator Calculate words per minute reading speed.
🔧
Reading Time Calculator Calculate reading time for an article or book.
🔧
Other Tools
(10) 🔧
Battery Charge Time Calculator Calculate battery charging time.
🔧
Diaper Calculator Calculate diaper usage and cost.
🔧
Expiration Date Calculator Calculate new expiration date from purchase.
🔧
Garbage Bag Size Calculator Find correct garbage bag size for a can.
🔧
Headphone Power Calculator Calculate power needed for headphones.
🔧
Linear Inches Calculator Calculate luggage size in linear inches.
🔧
Cost of Having a Baby Calculator Estimate first-year cost of a baby.
🔧
Picture Frame Calculator Calculate frame dimensions from picture size.
🔧
TikTok Time Alternatives Calculator Calculate what you could do with TikTok time.
🔧
Well Volume Calculator Calculate water volume in a well.