Our numbers calculators are designed to help students, teachers, and professionals solve math problems quickly and accurately. Each calculator provides step-by-step solutions so you can understand the process, not just get the answer.

All calculations are performed instantly in your browser - no waiting for server responses, and your data stays private. These tools work on any device: desktop, tablet, or mobile.

Available Numbers Tools:

Place Value Calculator - Find the place value of digits in a number. Learn ones, tens, hundreds, and more.
Significant Figures Calculator - Round numbers to significant figures. Count sig figs and perform calculations.
Modulo Calculator - Calculate the remainder of division (modulo operation). Find mod of any two numbers.
Rounding Numbers Calculator - Round numbers to any decimal place or whole number. Learn rounding rules.