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Generate custom number sequences based on start value, end value, and step size. Ideal for programming, testing, and bulk naming.
Prime and Composite Number Calculator
Instantly identify prime, composite, or special numbers. Supports batch checking and mathematical property analysis.
Inverse Trigonometric Function Calculator
Accurately calculate radian values for inverse trig functions like arcsin and arccos. Supports 6 function types and custom decimal precision.
Least Common Multiple (LCM) Calculator
Quickly calculate the least common multiple (LCM) of two or more integers. Supports space-separated number list input.
Circle Area Calculator
Quickly calculate the area of a circle by entering the radius, diameter, or circumference. Supports custom units and precision settings.
Prime and Composite Number Calculator
Instantly identify prime, composite, or special numbers. Supports batch checking and mathematical property analysis.
Inverse Trigonometric Function Calculator
Accurately calculate radian values for inverse trig functions like arcsin and arccos. Supports 6 function types and custom decimal precision.
Least Common Multiple (LCM) Calculator
Quickly calculate the least common multiple (LCM) of two or more integers. Supports space-separated number list input.
Circle Area Calculator
Quickly calculate the area of a circle by entering the radius, diameter, or circumference. Supports custom units and precision settings.
Trigonometry Calculator
Calculate six trigonometric functions from radian values with custom decimal precision.
When you need to quickly generate a sequence of numbers within a specific range at fixed intervals, manual entry is both tedious and prone to errors. This tool is designed to solve that exact problem. By using three core parameters set by the user—start number, end number, and step size—it automatically calculates and generates a continuous list of numbers. The "step size" is the core parameter that defines the difference between two adjacent numbers in the sequence, determining whether the sequence increments or decrements. The final output is a plain text number sequence arranged by line, ready to be copied and used.
Q: How do I generate a decrementing number sequence?
Simply set the start number to be greater than the end number and keep the step size as a positive number. For example, a start of 10, an end of 1, and a step size of 1 will generate the sequence 10, 9, 8 ... 1.
Q: Does the "step size" support decimals or negative numbers?
It supports decimals, but not negative numbers. The step size defines the absolute interval and must be greater than 0. If you need a decrementing sequence, achieve this by adjusting the relationship between the start and end numbers.
Please ensure that the start number, end number, and step size are all valid numbers. The step size must be greater than 0. If the difference between the end value and start value is not evenly divisible by the step size, the last generated number may be less than (when incrementing) or greater than (when decrementing) your inputted end value. This tool runs locally in your browser; no data is uploaded to our servers, ensuring your privacy and security.
For developers and QA testers, this tool is highly efficient for generating test data, loop indices, or mock IDs. A typical use case is generating a list of primary key IDs for database testing: set the start value to 10001, end value to 10100, step size to 1, and select comma separation to quickly get a SQL IN query condition like "10001,10002,...,10100". Note that due to JavaScript's numeric precision limits, minor precision errors may occur at the end of the sequence when handling extremely large or small floating-point numbers.
