.htaccess & Nginx Redirect Generator
Code & Config GeneratorsGenerate 301/302/410 redirect rules for Apache .htaccess or Nginx, with wildcards and HTTPS, www and trailing-slash presets.
4-Week Paycheck Calculator
Paycheck & Salary CalculatorsCalculate your paycheck amount on a 4-week (13-period) pay schedule from your annual salary.
401(k) Contribution Limit Calculator
Retirement CalculatorsLook up your 401(k) employee contribution limit for the current tax year, based on your age.
401(k) Early Withdrawal Penalty Calculator
Retirement CalculatorsEstimate the 10% penalty plus income tax cost of an early 401(k)/IRA withdrawal, and what you'd actually keep.
401(k) Employer Match Calculator
Retirement CalculatorsCalculate your employer's 401(k) match and check whether you're leaving free matching money on the table.
401k Calculator
Retirement CalculatorsProject your 401k balance including employer match, from your salary, contribution rate, and match terms.
529 Plan Contribution Limit Calculator
Retirement CalculatorsCheck a 529 plan lump-sum contribution against the federal gift tax annual exclusion and the 5-year superfunding election.
Acceleration Calculator
Physics & Unit-Rate CalculatorsCalculate acceleration from initial velocity, final velocity, and time.
Acres to Hectares Converter
Area ConvertersConvert Acres to Hectares instantly with an exact, accurate formula -- no sign-up, no ads blocking the result.
Acres to Square Feet Converter
ConvertersConvert acres to square feet, square yards, square meters, hectares, and more.
Acronym Generator
Text Utility & Word ToolsGenerate an acronym from a phrase by taking the first letter of each significant word.
Add Business Days Calculator
Date CalculatorsAdd a number of business days to a date, skipping weekends.
Adjust Image Brightness Online
GeneratorsBrighten or darken an image, with quick flip, rotate, and round-corner edits.
Advanced GPA Calculator
CalculatorsCalculate semester, cumulative, and target GPA on the 4.0, 5.0, or 10.0 scale.
Affiliate Commission Calculator
Business & Marketing CalculatorsCalculate affiliate commission earnings from a sale price and commission rate.
Age Calculator
CalculatorsFind the exact difference between two dates in years, months, and days.
Age in Months Calculator
Date & Work CalculatorsCalculate someone's exact age in total months from their date of birth.
Age in Weeks Calculator
Date & Work CalculatorsCalculate someone's exact age in total weeks from their date of birth.
Alabama Minimum Wage Calculator
Paycheck & Salary CalculatorsProject weekly and annual earnings from Alabama's minimum wage rate ($7.25/hr) and hours worked.
Alabama Sales Tax Calculator
Tax CalculatorsAdd Alabama's 4% state sales tax onto a price, or reverse a tax-inclusive total back to the pre-tax price.
Alaska Minimum Wage Calculator
Paycheck & Salary CalculatorsProject weekly and annual earnings from Alaska's minimum wage rate ($14.00/hr) and hours worked.
Alaska Sales Tax Calculator
Tax CalculatorsAlaska has no state-level sales tax -- add local sales tax (if any applies where you are) onto a price, or reverse a tax-inclusive total.
Alternating Case Generator
Text & Writing ToolsConvert text to aLtErNaTiNg CaSe.
Anagram Checker
Text Utility & Word ToolsCheck whether two words or phrases are anagrams of each other.