Most Popular Tools
this weekVAT Calculator (Inc/Exc)
Free VAT calculator — instantly add VAT to a net amount or extract VAT from a gross price. Works with any rate. Use our free calculator now. Get instant accurat
Date Difference Calculator
Free date difference calculator. Find the exact number of days, weeks, months, and years between any two dates — including or excluding weekends. Use our free c
Triangle Calculator
Free triangle calculator. Find the area, perimeter, and all missing angles and sides of any triangle given three known values (SSS, SAS, ASA, AAS). Use our free
EV Charging Cost Calculator
Free EV charging cost calculator. Enter your battery size, electricity rate, and charging level to find the total cost and time to charge your electric vehicle.
Age Calculator
Free age calculator. Enter a date of birth to find the exact age in years, months, days — and how many days until the next birthday. Use our free calculator now
Countdown Calculator
Free countdown calculator. Enter any future date to see exactly how many days, hours, and minutes remain until that event. Use our free calculator now.
Water Intake Calculator
Free water intake calculator. Find your optimal daily hydration goal in liters and cups based on body weight, exercise, and environmental factors. Use our free
GCD LCM Calculator
Free GCD and LCM calculator. Enter any two or more numbers to instantly find the greatest common divisor and least common multiple. Use our free calculator now.
Weight Converter
Free weight converter. Instantly convert between kilograms, pounds, ounces, grams, stones, metric tonnes, and US short tons. Use our free calculator now.
One Rep Max Calculator
Free one rep max calculator. Enter the weight you lifted and the number of reps to estimate your 1RM for bench press, squat, deadlift, and other exercises.
Cycling Calorie Calculator
Free cycling calorie calculator. Find how many calories you burn cycling based on body weight, speed, and ride duration for outdoor and indoor cycling.
Paint Calculator
Free paint calculator. Enter room dimensions and number of coats to find exactly how many liters or gallons of paint you need, including primer. Use our free ca