Finite Difference Table Calculator

How to use Finite Difference Table Calculator

Each new row subtracts adjacent entries in the preceding row. Plain-decimal observations are exact rationals; the exported triangular table therefore preserves cancellations rather than subtracting rounded absolute means.

1. Enter plain-decimal observations, maximum difference order.
2. Choose the stated convention and check the units and supported model.
3. Calculate, inspect the result, then copy or download it.

Good to know

• 2–100plain-decimal observations,100digits each, no exponent notation; order1–20 and below observation count. Exact arithmetic has an8192-bit cap. Differences are not exact derivatives of an unsampled function.
• Runs locally. Text/JSON fields are capped at30,000 characters; stricter page-specific and numeric-string limits also apply. Numeric inputs are bounded to magnitude1e15 and nonzero magnitude at least1e-100 unless an exact-string mode states otherwise. Approximate summaries use12 significant digits; CSV numeric cells retain the complete stored value and potentially formula-like string cells gain a protective apostrophe; unsupported, non-finite or detected underflow states return an error.