Numbers Calculators
4 free online tools
Understand place values, significant figures, rounding rules, and modulo operations for precise calculations.
Place Value Calculator
Identify place values of all digits in integers, whole numbers, or decimals using positional notation.
Significant Figures Calculator
Count significant figures and round numbers to the correct precision. Supports scientific notation and e notation.
Modulo Calculator
Calculate a mod b to find the remainder after division. Check if numbers are multiples or divisible.
Rounding Numbers Calculator
Round numbers up or down to any decimal place. Round to nearest dollar (ones) or cent (hundredths).
Other Calculator Categories
About Numbers Tools
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 - Identify place values of all digits in integers, whole numbers, or decimals using positional notation.
- Significant Figures Calculator - Count significant figures and round numbers to the correct precision. Supports scientific notation and e notation.
- Modulo Calculator - Calculate a mod b to find the remainder after division. Check if numbers are multiples or divisible.
- Rounding Numbers Calculator - Round numbers up or down to any decimal place. Round to nearest dollar (ones) or cent (hundredths).