Calculators
14 tools available in this category.
Helpful guides and common questions
Fast math tools for day-to-day tasks.
๐ฏ Percentage (multi-modes)
How to use Percentage (multi-modes) for calculate discount and percentage increase
It helps to quickly transform adjustments and discounts into practical numbers.
๐ฏ Percentage (multi-modes)
How to use Percentage (multi-modes) for find out how much a value represents of the total
It is used to analyze percentage participation and proportion between numbers.
โ๏ธ BMI
How to use BMI for do initial body band screening
Helps cross-reference weight and height for an initial BMI range reading.
โ๏ธ BMI
How to use BMI for compare healthy range before setting goal
It serves to see a reference weight range for the reported height.
๐ข Rule of Three
How to use Rule of Three for solve direct proportion
It helps to discover a proportional value when quantities grow together.
๐ข Rule of Three
How to use Rule of Three for solve inverse proportion
It is used for scenarios in which increasing one quantity reduces the other.
Percentage (multi-modes)
Discover percentage, increase and discount quickly.
BMI
Calculate body mass index with reference range.
Rule of Three
Solve simple proportions with unknown value.
Fuel Calculator
Compare ethanol and gasoline and estimate the fuel cost of a trip.
Age Calculator
Convert date of birth to current age.
2nd Degree Equation
Solve axยฒ + bx + c = 0 with Bhaskara.
Arithmetic Mean
Calculate average of up to 5 numbers quickly.
Paint Calculator per mยฒ
Estimate liters of wall paint using area, coats, yield and loss margin.
Barbecue Calculator
Stock up on meat, drinks, garlic bread and charcoal for a simple barbecue.
Difference between Dates
See the difference in days, months and years.
MDC and MMC
Calculate greatest common divisor and least common multiple.
Power and Root
Calculate power and nth root in one place.
Factorial
Calculate n! for non-negative integers.
Random Number Generator
Generate random integers in a range.
Questions about Calculators
Use this section to pick the right calculators tool before opening a calculator.
What can I do in the Calculators category?
Fast math tools for day-to-day tasks. Start with Percentage (multi-modes), BMI and Rule of Three and use filters or search to narrow the list.
When should I use these calculators tools?
Use this category to solve everyday math tasks, check formulas and compare simple scenarios. Results are fast estimates for comparison and planning.
Do I need an account to use the calculators?
No. CalculaTudo tools are free to open in the browser and do not require signup for normal use.
How do I choose the next calculator?
Open the most specific tool first, then use the related guides and category links to compare nearby scenarios.
