Free calculators, no sign-up
The math you do by hand, solved in a second
UniversalCalc brings together clear, no-nonsense calculators for everyday life: money, health, dates and more. No sign-up, no apps, and every result explained.
All calculators
Grouped by topic. All free, no sign-up, with the math explained.
- 2 calculators
Money
Mortgage, savings and interest.
- 2 calculators
Cars and travel
What it costs to get around.
- 8 calculators
Everyday
Percentages, dates, units and shared costs.
- PercentagesDiscounts, increases, sales tax and percent change.
- Electricity costWhat each appliance costs you per month.
- Days between datesHow many days between two dates, business days included.
- AgeYour exact age and the days you've lived.
- Unit converterLength, weight, volume, temperature and data.
- ProportionsDirect and inverse proportions, step by step.
- Grades and GPAWhat you need on the final, and your GPA.
- Split the billSplit a check or a trip between friends.
- 3 calculators
Health
Weight, calories and pregnancy.
Why UniversalCalc
No sign-up, nothing to install
Open it, calculate, done. We never ask for your email or make you create an account.
The math, explained
Every calculator shows the formula it uses, so you can check it yourself.
Shareable results
Every calculation creates a link you can text to someone or bookmark.