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Browse our complete collection of free online calculators and converters for unit conversion, finance, gaming, education, and business.
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126 tools
Latest releases
Freshly launched tools so you can see what has just been added to the catalog.
SBTI Personality Test
Take the viral SBTI personality test with a localized interface, bilingual content, and the original immersive flow.
Electricity Cost Calculator
Estimate appliance electricity usage and monthly or yearly running cost from watts, hours, and electricity rate.
Tip & Tax Calculator
Calculate restaurant bill with tip, tax, and split among multiple people.
Discount Calculator
Calculate sale price after discount with optional tax. Supports percentage and fixed discounts.
Savings Calculator
Estimate how a monthly savings plan grows from a starting balance and recurring deposits.
Compound Interest Calculator
Project future value from an initial deposit plus recurring contributions with flexible compounding.
Start with the most-used tools
Popular calculators and converters selected to help you find the right starting point faster.
Inch Converter
Convert inches to centimeters, feet, millimeters, and more with high precision.
Roblox Tax Calculator
Calculate the 30% Roblox marketplace fee and see your net Robux instantly.
Roblox DevEx Calculator
Convert earned Robux to USD using the official Developer Exchange rates.
India Salary Hike Calculator
Calculate your new salary after a hike with HRA, DA, allowances and bonus.
Salary Calculator
Convert pay between annual, monthly, weekly, daily, and hourly amounts with explicit work assumptions.
Investment Return Calculator
Measure total return, ROI, and annualized growth from a starting investment and ending value.
Browse by category
Move through the catalog by workflow instead of scanning one long grid of lookalike cards.
Conversion
Length, weight, temperature, speed, energy, and other unit conversion tools.
Utility
Everyday helpers for study, work, schedules, attendance, and quick decisions.
Finance
Loan, salary, pay commission, maturity, and personal money calculators.
Business
Operational tools for selling, marketplace fees, pricing, and planning.
Game
Robux, DevEx, tax, and progression calculators for players and creators.
All Tools
126 toolsBrowse our complete collection of free online calculators and converters for unit conversion, finance, gaming, education, and business.
Inch Converter
Convert inches to centimeters, feet, millimeters, and more with high precision.
Centimeter Converter
Convert centimeters to inches, feet, meters, and other length units.
Feet Converter
Convert feet to inches, centimeters, meters, and other length units.
Millimeter Converter
Convert millimeters to inches, centimeters, meters, and other length units.
Meter Converter
Convert meters to feet, inches, centimeters, and other length units.
Yard Converter
Convert yards to feet, meters, inches, and other length units.
Kilometer Converter
Convert kilometers to miles, meters, feet, and other length units.
Mile Converter
Convert miles to kilometers, meters, feet, and other length units.
Micrometer Converter
Convert micrometers to millimeters, nanometers, and other units.
Nanometer Converter
Convert nanometers to micrometers, millimeters. Essential for semiconductor tech.
Kilogram Converter
Convert kilograms to pounds, ounces, grams, and other weight units.
Pound Converter
Convert pounds to kilograms, ounces, grams, and other weight units.
Gram Converter
Convert grams to kilograms, ounces, pounds, and other weight units.
Ounce Converter
Convert ounces to grams, pounds, kilograms, and other weight units.
Ton Converter
Convert tons to kilograms, pounds, and other weight units.
Celsius Converter
Convert Celsius to Fahrenheit, Kelvin, and other temperature units.
Fahrenheit Converter
Convert Fahrenheit to Celsius, Kelvin, and other temperature units.
Kelvin Converter
Convert Kelvin to Celsius, Fahrenheit, and other temperature units.
Square Meter Converter
Convert square meters to square feet, acres, hectares, and other area units.
Square Feet Converter
Convert square feet to square meters, acres, and other area units.
Hectare Converter
Convert hectares to acres, square meters, and other area units.
Acre Converter
Convert acres to hectares, square meters, and other area units.
Square Kilometer Converter
Convert square kilometers to square miles, hectares, and other area units.
Roblox Tax Calculator
Calculate the 30% Roblox marketplace fee and see your net Robux instantly.