Everyday Calculators

30 Day Calculator

Find what date is 30 days from now or any number of days from any date

Day Counter Calculator

Calculate the number of days, weeks, months, and years between two dates

Benadryl Dosage Calculator for Dogs

Calculate a safe Benadryl (diphenhydramine) dose for your dog with liquid mL, tablet, and chewable conversions

Cat Age Calculator

Convert your cat's age to human years (or vice versa) using the standard veterinary aging model

Dog Age Calculator

Convert your dog's age to human years based on breed size or the Labrador research formula

Dog BMI Calculator

Estimate your dog's body mass index and compare it to healthy ranges by breed

Dog Food Calculator

Calculate your dog's daily calorie needs and cups of food based on weight and activity level

Omega-3 for Dogs Calculator

Estimate the daily EPA + DHA omega-3 dose for your dog based on weight and health purpose

Coin Flip Probability Calculator

Calculate the probability of getting heads or tails in multiple coin flips

Cups to Pounds Converter

Convert cups to pounds for flour, sugar, butter, milk, and other cooking ingredients

Grams to Cups Converter

Convert grams to cups for flour, sugar, butter, and other cooking ingredients

Grams to Teaspoons Converter

Convert grams to teaspoons for sugar, salt, flour, butter, and other cooking ingredients

ml to Grams Calculator

Convert milliliters to grams for water, milk, oil, honey, flour, and other ingredients

Gallons per Square Foot Calculator

Calculate liquid coverage for paint, sealer, fertilizer, and irrigation projects

Size to Weight Calculator (Rectangular Box)

Calculate the weight of a rectangular box from its dimensions and material density

Size to Cubic Yard Calculator

Calculate cubic yards for concrete, gravel, mulch, soil, and other bulk materials

MM to Inches Converter

Convert between millimeters and inches with decimal and fractional results

Poker Odds Calculator

Calculate your winning probability in Texas Hold'em poker based on your hand

Random Number Generator

Generate random numbers within a specified range

Roulette Payout Calculator

Calculate potential winnings and odds for different roulette bets

Square Footage Calculator

Calculate area for rooms and spaces in various shapes and units

Square Yards Calculator

Calculate area in square yards for landscaping, carpet, and concrete projects

Temperature Converter

Convert between Celsius, Fahrenheit, Kelvin, Rankine, and Réaumur

Test Grade Calculator

Calculate your test grade, percentage, and letter grade based on total questions and wrong answers

Time Calculator

Add, subtract, and calculate time differences with days, hours, minutes, and seconds