All Tools Verse
The best free online math and number tools cover everyday calculations, from a percentage or fraction to statistics and matrices, plus number theory and handy converters, all in your browser. All Tools Verse has a large set of free math and number tools that run client-side with no sign-up and nothing uploaded. This guide picks the best free tool for each task, from a quick percentage to prime factors or turning numbers into words.
In this guide
Best math and number tools at a glance
Pick the task, then open the tool. Each is free and needs no account.
| Task | Best free tool | Good for |
|---|---|---|
| Percentage | Percentage Calculator | Percent and percent change |
| Fractions | Fraction Calculator | Add, subtract, simplify |
| Scientific math | Scientific Calculator | Trig, logs, powers |
| Statistics | Statistics Calculator | Mean, median, mode, SD |
| Tip and split | Tip Calculator | Splitting a bill |
| Prime factors | Prime Factors, GCD | Factoring numbers |
| Numbers to words | Numbers to Words | Cheques and writing |
Everyday calculators
The calculators people reach for most: Percentage Calculator for percent and percent change, Fraction Calculator to add, subtract, multiply, and simplify fractions, and the Scientific Calculator for trigonometry, logarithms, and powers. For data, Statistics Calculator finds the mean, median, mode, and standard deviation, and Ratio Calculator simplifies and solves ratios.
Money and shopping
For everyday money math, Tip Calculator works out the tip and splits the bill, Discount Calculator shows the sale price and savings, and for business, Margin and Markup Calculator and ROI Calculator turn costs and returns into clear percentages.
Time, age and grades
Some of the most used calculators are about time. Age Calculator gives an exact age in years, months, and days, Date Difference Calculator counts the days between two dates, and Hours Calculator finds the time between two times. Students can use the GPA Calculator, and runners the Pace Calculator.
Algebra and matrices
For algebra, Matrix Multiplication, Matrix Addition, and Matrix Subtraction handle linear algebra, while Factorial computes n. To factor numbers, Find All Divisors, Greatest Common Divisor, and Least Common Multiple answer the classic homework questions.
Number theory and sequences
For number theory, Generate Prime Numbers and Prime Factors work with primes, and famous sequences have their own tools: Fibonacci, Lucas Numbers, Perfect Numbers, and Pascal’s Triangle. You can even compute the digits of constants with Pi Digits.
Number converters and utilities
Handy everyday helpers round things out: Numbers to Words and Words to Numbers for cheques and writing, Add Commas to Integer for readable figures, Change Number Base between bases, Digit Sum and Number Palindrome for digit puzzles, and Analyze Integers for quick stats on a list of numbers.
How to choose the right tool
Match the tool to the question. A percent, fraction, or trig problem is one of the everyday calculators. A price or return is a money calculator. A gap in time is a date or hours calculator. A factoring or sequence question is a number theory tool. And turning a figure into words or another base is a converter. Each is a single focused tool, so the answer is one step away.
Trusted alternatives
For a fast sum, the calculator built into Google search or your phone is enough. Desmos is a free graphing calculator, Wolfram Alpha handles advanced symbolic math, and a spreadsheet like Google Sheets is ideal for tables of numbers. For a single focused calculation, a dedicated browser tool is quicker.
Popular free tools in this guide
Frequently asked questions
What is the best free online calculator?
It depends on the task: Percentage Calculator for percent, Fraction Calculator for fractions, Scientific Calculator for trig and logs, and Statistics Calculator for data. All are free and run in your browser.
How do I calculate a percentage or percent change?
Use Percentage Calculator, enter the values, and it returns the percentage or the percent change between two numbers without uploading anything.
How do I add or simplify fractions?
Open Fraction Calculator, enter the fractions, and it adds, subtracts, multiplies, and reduces them to lowest terms.
How do I find prime factors or the GCD?
Use Prime Factors to break a number into primes, and Greatest Common Divisor or Least Common Multiple for two numbers.
Are these math tools free and private?
Yes. Every tool is free with no account, and the calculation runs on your device, so nothing you enter is uploaded.
How do I convert numbers to words?
Use Numbers to Words, which spells a figure out for cheques and documents, and Words to Numbers for the reverse.
This guide is part of our roundup of the best free online tools.