All Calculators
Free online calculators for math, education, time, everyday tasks, and unit conversions. No sign-up required.
Campaign Forecast Calculator
Free ad campaign forecast calculator. Enter cost, impressions, CTR, co...
CPM Calculator
Free CPM calculator. Solve for CPM, ad spend, or impressions — enter a...
Random Number Generator
Free random number generator. Generate one or multiple random integers...
Grade Calculator
Free grade calculator. Enter assignment grades and weights to find you...
College GPA Calculator
Free college GPA calculator. Enter your letter grades and credit hours...
High School GPA Calculator
Free high school GPA calculator with weighted and unweighted GPA. Supp...
Time Calculator
Free time calculator. Add or subtract hours, minutes, and seconds. Get...
Date Calculator
Free date calculator. Find days between two dates or add/subtract year...
Percentage Calculator
Free percentage calculator. Calculate what percent of any number insta...
Age Calculator
Free age calculator. Enter your birth date to find your exact age in y...
Time Clock Calculator
Free time clock calculator. Enter clock in/out times, break duration, ...
Fraction Calculator
Free fraction calculator. Add, subtract, multiply, or divide two fract...
Percentage Change Calculator
Free percentage change calculator. Enter the original and new values t...
Tip Calculator
Free tip calculator. Enter your bill amount, tip percentage, and numbe...
Morse Code Converter
Free Morse code converter. Translate text to Morse code dots and dashe...
Time Zone Calculator
Free time zone calculator. Convert any time between UTC offsets instan...
Work Hours Calculator
Free work hours calculator: enter hours per day and days per week for ...
Square Footage Calculator
Free square footage calculator. Enter length and width to calculate ar...
Discount Calculator
Free discount calculator. Enter the original price and discount percen...
Time Duration Calculator
Free time duration calculator. Enter a start and end time to find the ...
Average Calculator
Free average calculator. Enter a list of numbers to find the mean, med...
Fuel Cost Calculator
Free fuel cost calculator. Enter distance, fuel efficiency (MPG), and ...
Speed Distance Time Calculator
Free speed distance time calculator. Enter any two values to solve for...
Area Calculator
Free area calculator for rectangle, square, circle, triangle, parallel...
Volume Calculator
Free volume calculator. Select a 3D shape and enter dimensions to calc...
Cooking Converter
Free cooking measurement converter. Convert between cups, tablespoons,...
CM to Inches Converter
Free CM to inches converter. Convert centimeters to inches instantly. ...
KG to LBS Converter
Free KG to LBS converter. Convert kilograms to pounds instantly. 1 kg ...
Fahrenheit to Celsius Converter
Free Fahrenheit to Celsius converter. Convert temperatures instantly. ...
Cups to ML Converter
Free cups to milliliters converter. Convert US cups to mL instantly. 1...
Miles to KM Converter
Free miles to kilometers converter. Convert miles to km instantly. 1 m...
Feet to Meters Converter
Free feet to meters converter. Convert feet to meters instantly. 1 foo...
Hours to Minutes Converter
Free hours to minutes converter. Convert any number of hours (includin...
Middle School GPA Calculator
Free middle school GPA calculator. Enter your grades to calculate your...
Weighted GPA Calculator
Free weighted GPA calculator. Enter your grades with course types (Reg...
Ratio Calculator
Free ratio calculator. Solve proportions by finding the missing value ...
Cumulative GPA Calculator
Free cumulative GPA calculator. Enter your current GPA and credits, ad...
Semester GPA Calculator
Free semester GPA calculator. Enter your courses, credits, and letter ...
Final Grade Calculator
Free final grade calculator. Enter your current grade, desired grade, ...
Word Counter
Free word counter tool. Paste your text to instantly count words, char...
Character Counter
Free character counter. Count characters with and without spaces, plus...
Standard Deviation Calculator
Free standard deviation calculator. Enter your data to calculate stand...
Binary to Decimal Converter
Free binary to decimal converter. Convert binary to decimal and hex in...
Hex to RGB Converter
Free hex to RGB converter. Convert hex color codes to RGB values and R...
Concrete Calculator
Free concrete calculator. Calculate cubic yards for slabs, columns, wa...
Pace Calculator
Free pace calculator for runners. Calculate running pace, finish time,...
Quadratic Formula Calculator
Free quadratic formula calculator. Solve any quadratic equation with s...
Aspect Ratio Calculator
Free aspect ratio calculator. Find the aspect ratio of any image or vi...
GPA to Percentage Converter
Free GPA to percentage converter. Convert GPA on 4.0 or 10.0 scale to ...
GCF Calculator (Greatest Common Factor)
Free GCF calculator. Find the greatest common factor of two or more nu...
LCM Calculator (Least Common Multiple)
Free LCM calculator. Find the least common multiple of two or more num...
Slope Calculator
Free slope calculator. Find slope, y-intercept, equation, angle, and d...
Pythagorean Theorem Calculator
Free Pythagorean theorem calculator. Find any side of a right triangle...
Circle Calculator
Free circle calculator. Find radius, diameter, circumference, and area...
Triangle Calculator
Free triangle calculator. Solve any triangle from any 3 values (SSS, S...
Exponent Calculator
Free exponent calculator. Compute any base raised to any power with st...
Logarithm Calculator
Free logarithm calculator. Compute log base any value with step-by-ste...
Prime Number Checker
Free prime number checker. Check if any number is prime with step-by-s...
Factorial Calculator
Free factorial calculator. Compute factorial of any number up to 1000 ...
Paint Calculator
Free paint calculator. Find exactly how many gallons you need for any ...
Wallpaper Calculator
Free wallpaper calculator with pattern-repeat math, US double-roll and...
Drywall Calculator
Free drywall calculator. Compute sheets, screws, joint tape, and joint...
Insulation Calculator
Free insulation calculator. Find bags or sheets needed for any R-value...
Wood Stain Calculator
Free wood stain calculator. Find gallons needed for decks, fences, rai...
Flooring Calculator
Free flooring calculator. Find exact planks and boxes needed for lamin...
Fence Calculator
Free fence calculator. Compute posts, rails, pickets, concrete for fen...
Chain Link Fence Calculator
Free chain link fence calculator. Find terminal posts, line posts, top...
Wire Fence Calculator
Free woven wire / field fence calculator. Find T-posts, wood corner po...
Mulch Calculator
Free mulch calculator finds the cubic yards and number of bags of mulc...
Gravel Calculator
Free gravel calculator finds how many tons and cubic yards of gravel y...
Topsoil Calculator
Free topsoil calculator: find the cubic yards, bags, and bulk cost of ...
Sand Calculator
Free sand calculator: find the tons, cubic yards, and bags of sand for...
Tile Calculator
Free tile calculator finds how many tiles and boxes you need for a flo...
Grout Calculator
Free grout calculator finds how many pounds and bags of grout you need...
Brick Calculator
Free brick calculator finds how many bricks and mortar bags you need f...
Paver Calculator
Free paver calculator finds how many pavers you need for a patio or wa...
Hours Per Week Calculator
Convert hours per week to hours per day, month, and year. Find out how...
Timesheet Calculator
Free timesheet calculator: enter your daily clock-in, clock-out and lu...
Overtime Pay Calculator
Free overtime calculator to work out time-and-a-half OT pay from your ...
Salary to Hourly Calculator
Free salary to hourly calculator: turn an annual salary into an hourly...
Billable Hours Calculator
Free billable hours calculator: turn tracked time and your hourly rate...
Time and a Half Calculator
Free time and a half calculator: enter your hourly rate and overtime h...
Vinyl Fence Calculator
Free vinyl fence calculator finds how many PVC fence panels, posts, ca...
Deck Board Calculator
Free deck board calculator finds how many deck boards, screws, and hid...
Fence Post Calculator: Posts & Concrete for a Fence Line
Free fence post calculator finds how many fence posts and concrete bag...
Fence Cost Calculator
Free fence cost calculator estimates your total fence price by length,...
Roofing Calculator
Free roofing calculator estimates shingle bundles and squares from you...
Carpet Calculator
Free carpet calculator finds the square yards and square feet you need...
Board Foot Calculator
Free board foot calculator: enter thickness, width, length and quantit...
Stud Calculator
Free stud calculator finds how many wall studs you need by wall length...
Concrete Block Calculator
Free concrete block calculator: enter your wall length and height to g...
Roof Pitch Calculator
Free roof pitch calculator: enter rise and run to get pitch ratio (x:1...
BTU Calculator — How Many BTU to Heat or Cool a Room
Free BTU calculator to size an air conditioner or heater by room squar...
Baseboard Calculator: Linear Feet & Boards for a Room
Free baseboard calculator: enter your room length, width, and number o...
Rebar Calculator
Free rebar calculator: enter slab length, width and grid spacing to ge...
Plywood Sheet Calculator
Free plywood sheet calculator: find how many 4x8 sheets you need to co...
Asphalt Calculator: How Many Tons for a Driveway
Free asphalt calculator that turns your driveway length, width and dep...
Excavation Calculator
Free excavation calculator: enter length, width, and depth to get cubi...
Crown Molding Calculator: Pieces & Linear Feet
Free crown molding calculator: find the linear feet and number of crow...
Business Days Calculator
Free business days calculator that counts working days between two dat...
Retaining Wall Calculator – Blocks & Base Gravel
Free retaining wall calculator: enter wall length, height and block si...
Lunch Break Calculator
Free lunch break calculator: enter clock-in, clock-out, and unpaid lun...