Text Processing

Normalize paragraph formatting with proper spacing, punctuation, and structure

Utilities

Pack an entire document into a single shareable URL — no account, no server, the link IS the document. Optional AES-256 password encryption, five templates, and the recipient just opens the link to read it.

Math & Numbers

Plot a normal-distribution bell curve as SVG with z-score markers, interval or tail-probability shading, and 68/95/99.7 standard-deviation bands.

Network

Decode hex captures from cellular IoT devices: CoAP headers/options (block-wise, Observe), LwM2M TLV object trees with registry names, SMS-DELIVER UDH port addressing unwrapping CoAP-over-SMS, link-format registrations and DTLS record summaries.

Science & Education

E = E⁰ − (RT/nF)·lnQ at any temperature, with the thermal factor RT/F, per-decade step 2.303RT/nF, and ΔG = −nFE.

Science & Education

NA = n·sinα with the full acceptance cone and Abbe limit λ/(2·NA) — dry versus oil-immersion microscopy.

Math & Numbers

Newton-Raphson iteration for f(x) = 0 with analytic or numeric derivative, full iteration table, and explicit convergence/divergence reporting.

Math & Numbers

Forward, backward, and central finite differences for f′(x₀) plus the central second derivative, with optional per-method error against the exact derivative.

Math & Numbers

Composite Simpson's 1/3 rule for ∫f(x)dx (even n): node table with weights, integral estimate, optional exact value, O(h⁴) accuracy.

Math & Numbers

Composite trapezoidal rule for ∫f(x)dx: node table, integral estimate, optional exact value and O(h²) error report.

Sports

Compute the official NFL quarterback passer rating (0–158.3) with component breakdown, and MLB pitching stats ERA and WHIP with baseball innings notation.

Health

Calculate the NIH Stroke Scale (NIHSS) to quantify acute stroke neurologic deficit across 11 categories (15 scored items, with left & right limb motor graded separately). Items: 1a Level of consciousness (0–3), 1b LOC questions (0–2), 1c LOC commands (0–2), 2 Best gaze (0–2), 3 Visual fields (0–3), 4 Facial palsy (0–3), 5a/5b Motor arm left/right (0–4 each), 6a/6b Motor leg left/right (0–4 each), 7 Limb ataxia (0–2), 8 Sensory (0–2), 9 Best language (0–3), 10 Dysarthria (0–2), 11 Extinction/inattention (0–2). Both left and right limb motor scores are summed into the total (standard NIHSS); the tool also reports the more-affected side (max of left/right) for clinical context. Range 0–42; higher = more severe. Interpretation: 0 no symptoms, 1–4 minor, 5–15 moderate, 16–20 moderate-to-severe, 21–42 severe. Derived from Brott et al. 1989 (Stroke) and NINDS instructions. Scoring reliability is examiner-dependent and should be performed by trained personnel. Not medical advice.