Webenri Free Tools

Free calculators and converters. No sign-up.

• RevenueAffiliate Revenue & PV CalculatorEstimate revenue from PV and reverse-calculate PV for a target.
• DatesAge, School Grade and Yakudoshi CalculatorCalculate age, Japanese school grade, yakudoshi and longevity milestones.
• ConvertersHEX, RGB and HSL Color ConverterConvert color codes and check the contrast ratio between two colors.
• DatesDate Difference CalculatorSee the interval in years, months and days as well as total days.
• CalculatorsElectricity Cost CalculatorCalculate daily and monthly electricity costs from watts and usage time.
• SocialEngagement Rate CalculatorDivide interactions by followers and compare with an editable benchmark.
• CalculatorsFuel Economy and Trip Cost CalculatorCalculate fuel economy and fuel cost from distance and fuel used.
• SocialHashtag FormatterDeduplicate tags, add # prefixes and check a limit.
• OtherImage ResizerResize multiple images by dimensions or percentage and save the results.
• CalculatorsLoan Repayment CalculatorCompare equal monthly payments with and without a lump-sum prepayment.
• RevenueMonetization Goal DateProject when subscriber and watch-time goals may be reached.
• OtherPassword GeneratorGenerate passwords locally with cryptographically secure randomness.
• DatesPregnancy Due Date and Gestational Age CalculatorEstimate a due date and gestational age from the last menstrual period.
• CalculatorsProbability and Trial CalculatorCalculate the chance of at least one success from a rate and number of trials.
• DatesBedtime CalculatorWork backward from your wake-up time in 90-minute cycles.
• RevenueSponsorship Rate RangeBuild a sponsorship range from followers and editable factors.
• CalculatorsSales Tax CalculatorConvert between tax-exclusive and tax-inclusive prices at 8% or 10%.
• RevenueTip Net Income CalculatorEstimate take-home tips after editable fees and withholding.
• RevenueVideo Ad Revenue CalculatorEstimate ad revenue from views and an RPM range.
• CalculatorsBill SplitterLet the organizer absorb the remainder, or split it evenly.
• TextWhitespace and Line Break FormatterClean repeated blank lines, spaces and tabs using selectable rules.