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822 tools
Number Sorter
Integer Range Generator
Bytes Converter
Electric Current Converter
Fuel Converter
This is an online scientific calculator with double-digit precision that supports both button click and keyboard type.
This free hex calculator can add, subtract, multiply, and divide hexadecimal values, as well as convert between hexadecimal and decimal values.
This free log calculator solves for the unknown portions of a logarithmic expression using base e, 2, 10, or any other desired base.
This free big number calculator can perform calculations involving very large integers or decimals at a high level of precision.
This free number sequence calculator can determine the terms (as well as the sum of all terms) of the arithmetic, geometric, or Fibonacci sequence.
This statistics calculator computes a number of common statistical values including standard deviation, mean, sum, geometric mean, and more, given a data set.
This calculator determines the mean, median, mode, and range of a given data set. Also, learn more about these statistical values and when each should be used.
This free triangle calculator computes the edges, angles, area, height, perimeter, median, as well as other values and a diagram of the resulting triangle.
Two free calculators estimate the number of BTUs needed to cool or heat a room or house based on its size, insulation, and some other conditions.
This free GDP calculator computes GDP using both the expenditure approach as well as the resource cost-income approach.
This free converter converts between Arabic numbers and Roman numerals. It also converts between dates in both formats.
This resistor calculator converts the ohm value and tolerance based on resistor color codes and determines the resistances of resistors in parallel or series.
Free electricity calculator to estimate electricity usage as well as cost based on the power requirements and usage of appliances.
Two free calculators for computing a golf player's course handicap and the player's World Handicap System (WHS) handicap index based on their past scores.
This free gas mileage calculator estimates gas mileage based on odometer readings, gas price per gallon, and the amount of gas in the tank.
This free engine horsepower calculator estimates vehicle engine horsepower using two different methods: the elapsed time method and the trap-speed method.
This mileage calculator estimates the number of driving miles between two locations in the United States.
This free calculator evaluates compatibility based on two names, returning a score from 0% to 100%, with a higher score indicating a better match.
The AI water footprint calculator estimates the amount of water and energy used by AI models, such as ChatGPT, as well as the environmental impact of their queries.