Every calculator you'll ever need.
Fast · Free · No signup · Works in 5 languages
🇬🇧 EN·🇪🇸 ES·🇫🇷 FR·🇩🇪 DE·🇯🇵 JAplain-language search · instant results
AD · 970×90 hero leaderboard
Browse by category
Explore all calculatorsFinance
Mortgages, loans, investments, taxes — every money question answered.
Health
BMI, calories, ideal weight, heart rate — tools for a healthier you.
Math
Percentages, fractions, algebra, geometry and more.
Convert
Length, weight, temperature, currency and unit converters.
Date & Time
Age, date difference, time zones and working-days calculators.
Other
Tip splitter, fuel cost, grade calculator and more everyday tools.
DIY
Concrete, paint, flooring and lumber calculators for home projects.
Random
Coin flip, dice roll, random number picker and other chance tools.
Science
Lab and research calculators — qPCR, sequence analysis, microbiome diversity and more.
AD · 728×90 mid
Most recent
View all calculatorsAbout calcitup
calcitup is a free, fast calculator hub covering everything from finance and health to unit conversion and time zones. Every calculator works instantly in your browser with no sign-up required. We support English, Spanish, French, German, and Japanese so you can get answers in the language you're most comfortable with. Our tools are built for accuracy, mobile-first, and optimised for Lighthouse scores above 90.