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Browse the tool catalog | Page 163

Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context. Page 163.

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Math, Date & Finance639

Calculators, numerics, date logic, statistics, and finance tools

Images, Audio & Video597

Image, audio, and video processing, conversion, and optimization tools

Design & Color294

Color, layout, graphics, visual styling, and design helper tools

Text & Writing206

Writing, cleanup, formatting, extraction, and text analysis tools

Developer & Web188

Developer utilities, networking, web debugging, and automation helpers

Conversion & Encoding172

Format, file, archive, unit, and encoding conversion tools

Absorbance Quantification and Acid-Base Calculations

JSON Structure Surgery

Tabular Data Cleanup, Shaping, and Normalization

Professional Assembly of an Excel Workbook

PDF Repair, Cleanup, and Slimming

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Health

NIH Stroke Scale (NIHSS)

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.

Health

Maintenance Dose Calculator (MD = Css · CL · τ / F)

Calculate the maintenance dose that holds the average steady-state concentration at a target value: MD = Css,avg · CL · τ / F, where Css,avg is the target average concentration, CL is clearance, τ is the dosing interval, and F is bioavailability (1 for IV, <1 for oral). Derived from steady-state mass balance (rate in = rate out): the dose per interval equals the amount cleared over one interval, corrected for bioavailability. Targets the AVERAGE Css,avg — the peak Cmax,ss and trough Cmin,ss fluctuate around it depending on t½ and τ. Valid only for linear pharmacokinetics with fixed dose and interval — NOT for Michaelis-Menten drugs (phenytoin). Optional body-weight input converts the result to mg/kg. Not medical advice.

Math & Numbers

Moment of Force Converter (N·m / dyn·cm / lbf·ft / kgf·m)

Convert moment of force (torque) between newton-metre (N·m, SI base), dyne-centimetre (dyn·cm, CGS = 10⁻⁷ N·m), pound-foot (lbf·ft = 1.3558179483314004 N·m), and kilogram-force-metre (kgf·m = 9.80665 N·m). Each factor is the exact product of the matching force factor and length factor. Converts via N·m to the target unit and lists all four equivalents. Reference: wheel-nut tightening torque ≈ 100 N·m, passenger-car engine peak torque ≈ 250 N·m.

Math & Numbers

Motor Efficiency Calculator (η = P_out / P_in)

Compute motor efficiency η = P_out / P_in. Supports electrical input (single-phase U·I·cosφ or three-phase √3·U·I·cosφ) or direct P_in; output power can be derived from a loss breakdown (copper+iron+rotor copper+mechanical+stray) or supplied directly.

Math & Numbers

Three-Phase Induction Motor Slip Calculator

Compute three-phase induction motor slip: synchronous speed n_s = 60·f/p and slip s = (n_s − n)/n_s. Supports slip-from-speed and speed-from-slip modes; automatically flags generator mode (s < 0).

Math & Numbers

Induction Motor Torque-Speed Characteristic (Kloss)

Build the torque-speed curve of a three-phase induction motor using the Kloss equation T/T_max = 2/(s/s_max + s_max/s). Returns rated torque, breakdown (max) torque, starting torque, breakdown slip, and a sampled T-n curve with configurable point count.

Math & Numbers

Moment of Inertia Calculator

Calculate the second moment of area (I) and section modulus (Z) for common cross-sections: solid circle, rectangle, hollow tube, and I-beam. Results in mm⁴ and cm⁴.

Utilities

OKR & KPI Tree Decomposer

Decompose an Objective into a weighted Department → Team → Personal tree with automatic progress roll-up. HTML tree + Markdown + CSV output.

Network

MTU / MSS Path Calculator

Calculate how much each tunnel or encapsulation layer consumes from your interface MTU, the effective TCP MSS, and the DF ping probe size. For SRE, SD-WAN, and k8s CNI engineers.

Health

Macro Calculator (Carbs / Protein / Fat Split)

Convert a daily calorie target into grams of carbohydrate, protein and fat. Pick a preset split — balanced (50/30/20), low-carb (35/40/25), keto (10/20/70) or high-protein (40/35/25) — or define your own percentages.

Games

Magic 8 Ball

The classic Magic 8 Ball. Ask any yes-or-no question, shake, and get one of 20 traditional answers (yes / no / uncertain). Classic English phrases or localized translations.

Games

Mastermind Game

Classic Mastermind code-breaking game. The computer picks a secret color code; you guess row by row. Black pegs = right color and position; white pegs = right color, wrong position.