All Calculators
Every calculator on this site in one place: the basic 4 function calculator, percentage calculators, and versions with fractions, decimals, negative numbers, parentheses, exponents, square roots and logarithms. Each one is free and runs in your browser.
The Basic 4 Function Calculator
Start here for everyday arithmetic.
4 Function Calculator
Add, subtract, multiply and divide with keyboard input, a calculation history, memory keys, and percent and square root keys.
Percentages & Money
Percents of numbers, percent increase or decrease, discounts, sales tax, tips, unit prices, profit margins and interest.
Percentage Calculator
Find X% of Y, what percent X is of Y, or the whole from a part, with every step shown. X% of Y • 3 modes Open →Percentage Change Calculator
Percent increase or decrease between two numbers, or raise or lower a number by a percent. ↑ ↓ Increase • Decrease Open →Percent Off Calculator
Sale price and savings, stacked discounts, % off between two prices, or the original price. Sale • Coupons • Original Open →Sales Tax Calculator
Add tax to a price, take tax out of a total (VAT and GST too), or find the rate from a receipt. Add • Remove • Rate Open →Tip Calculator
Tip and total, split the bill between any number of people, or tip on the pre-tax amount. Tip • Split • Pre-tax Open →Unit Price Calculator
Compare up to 4 products by price per ounce, pound, liter or item to find the best deal. Per oz • Per lb • Per item Open →Margin and Markup Calculator
Profit, margin and markup from cost and price, or the price for a target margin. Margin • Markup • Pricing Open →Simple Interest Calculator
Interest and total from principal, rate and time, or solve for any of them. Compared with compound. I = P × r × t • Compound Open →Averages & Grades
Mean, median, mode and range, weighted grades, and the score you need.
Average Calculator
Mean, median, mode and range of a list, a weighted average, or the score you need. Mean • Weighted • Score needed Open →Grade Calculator
Points to percent and letter grade, the score you need on a final, and grading scales. Letter grade • Final exam • Scale Open →GPA Calculator
Semester and cumulative GPA from grades and credits, weighted AP/honors, and the GPA you need. Semester • Cumulative • Weighted Open →Step-by-Step School Math
Written methods worked out the way they're taught, with every step shown.
Long Division Calculator
See the full written layout and every divide, multiply, subtract and bring-down step. Remainders • Decimals • Steps Open →Multiplication Calculator
Long multiplication with every row, carry and placeholder zero, or the box method. Long • Box method • Decimals Open →GCF and LCM Calculator
Greatest common factor and least common multiple of 2 to 6 numbers, with prime factors. Prime factors • Listing • Euclid Open →Fraction to Decimal Calculator
Fractions to decimals and percents, decimals back to fractions, and simplifying. Convert • Simplify • Repeating Open →Ratio Calculator
Simplify ratios, solve proportions like 3 : 4 = 15 : x, and split an amount in a ratio. Simplify • Proportion • Split Open →Rounding Calculator
Round to any place or significant figures, with half up, banker's, up and down rules. Places • Sig figs • Number line Open →Charts & Tables
Printable reference charts for times tables and fraction conversions.
Fractions, Decimals & Negatives
The same four operations, built for the kind of numbers you are working with.
4 Function Calculator with Fractions
Add, subtract, multiply and divide fractions and mixed numbers. a/b • Mixed Fractions Open →4 Function Calculator with Decimals
Precise decimal results for money and homework. 0.00 Precision Open →4 Function Calculator with Negative Sign
Use the +/− toggle for signed addition, subtraction, multiplication and division. +/− Signed Arithmetic Open →Order of Operations, Powers & Roots
Step-by-step PEMDAS, grouping with brackets, powers, square roots and logarithms.
Order of Operations Calculator
Type any expression and get a labeled, step-by-step PEMDAS solution. Step-by-step • BODMAS Open →4 Function Calculator with Parentheses
Group steps with ( ) and solve multi-step problems in the correct order of operations. ( ) Grouping Open →4 Function Calculator with Exponents
Calculate powers and squares with x² and xʸ. x² • xʸ Powers Open →4 Function Calculator with Square Root
Find square roots with the √ key, alongside memory and history. √x Radicals Open →4 Function Calculator with Log
Calculate log and ln values plus basic arithmetic. log • ln Functions Open →Which Calculator Do I Need?
Find the task, then open the matching calculator.
| I want to… | Use |
|---|---|
| Add, subtract, multiply or divide everyday numbers | 4 Function Calculator |
| Find a percent of a number, or what percent one number is of another | Percentage Calculator |
| Find the percent increase or decrease between two numbers | Percentage Change Calculator |
| Find a sale price, stack a coupon, or find the original price | Percent Off Calculator |
| Add sales tax, remove it from a total, or find the tax rate | Sales Tax Calculator |
| Work out a tip or split a restaurant bill | Tip Calculator |
| Find an average, a weighted grade, or the score you need | Average Calculator |
| Find which size or brand is the better deal | Unit Price Calculator |
| See long division worked out, with a remainder or decimals | Long Division Calculator |
| See long multiplication or the box method worked out | Multiplication Calculator |
| Find the greatest common factor or least common multiple | GCF and LCM Calculator |
| Turn a fraction into a decimal, or simplify a fraction | Fraction to Decimal Calculator |
| Simplify a ratio, solve a proportion, or share an amount | Ratio Calculator |
| Round a number to a place value or significant figures | Rounding Calculator |
| Look up a times table or practise multiplication facts | Multiplication Table |
| Look up common fractions as decimals and percents | Fraction to Decimal Chart |
| Turn a test score into a letter grade, or plan for a final exam | Grade Calculator |
| Work out a semester or cumulative GPA | GPA Calculator |
| Find a profit margin or markup, or price for a target margin | Margin and Markup Calculator |
| Work out simple interest on a loan or savings | Simple Interest Calculator |
| Work with fractions or mixed numbers | With Fractions |
| Get precise decimal results for money or homework | With Decimals |
| Calculate with negative numbers | With Negative Sign |
| See a homework expression solved step by step (PEMDAS) | Order of Operations Calculator |
| Solve a multi-step problem in the correct order | With Parentheses |
| Raise a number to a power | With Exponents |
| Find a square root | With Square Root |
| Find a log or natural log (ln) | With Log |
Just need the basics?
Open the 4 Function Calculator →