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Instant result
Enter the data and press the button to do the calculation.
Online Calculator
Significant figures calculator
Enter a number and choose between 1 and 15 significant figures.
Information
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Local processing
The values are processed directly in your browser.
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Free
No registration, external API or subscription required.
Frequently asked questions
What are the significant figures?
They are the digits that provide information about the accuracy of a value.
Is it the same as rounding decimals?
No. Significant figures count from the first digit other than zero.
How many digits does it support?
Between 1 and 15.
Is it for very large or small numbers?
Yes, as long as they can be represented as finite JavaScript numbers.