Finite difference table explorer
Build a full difference table and test whether equally spaced samples fit a proposed polynomial degree.
Enter 2 to 64 equally spaced values, with at most 20,000 input characters. Values may be exact decimals, scientific notation or integer fractions within 120 digits per part and exponents from −120 to 120. Choose degree 0 to 20 and nonzero spacing. A degree-d consistency check needs at least d + 2 points. Exact arithmetic does not silently tolerate measurement rounding. Conditional next values are shown only for consistent samples; finite samples never prove the generating rule. Enter equally spaced sample values in order. Use decimal points, or exact fractions such as 1/3. Results update as you type. Up to 20,000 characters.
Your result
How to use Finite difference table explorer
- Paste the sample values in their original order.
- Set the starting x, equal spacing and proposed maximum polynomial degree.
- Inspect every difference and the consistency result, then download the complete table.
Useful next steps
How to use it
Build a full difference table and test whether equally spaced samples fit a proposed polynomial degree.
Limits and assumptions
Enter 2 to 64 equally spaced values, with at most 20,000 input characters. Values may be exact decimals, scientific notation or integer fractions within 120 digits per part and exponents from −120 to 120. Choose degree 0 to 20 and nonzero spacing. A degree-d consistency check needs at least d + 2 points. Exact arithmetic does not silently tolerate measurement rounding. Conditional next values are shown only for consistent samples; finite samples never prove the generating rule.
Keep the exact values
Download JSON for the calculation, CSV for the complete table and the method note. Processing stays on your device.