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Browse the tool catalog | Page 41

Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context. Page 41.

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Math, Date & Finance586

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

Images, Audio & Video564

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

Design & Color284

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

Text & Writing200

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

Conversion & Encoding164

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

Developer & Web161

Developer utilities, networking, web debugging, and automation helpers

Audio Encoding and Format Conversion Tools

Image Format Conversion and Animated Export Tools

JSON Interchange and Format Translation Tools

Color Space Conversion Tools for Web and Print

Text Case, Encoding, and Normalization Conversion Tools

Docs Pricing Terms of Service Privacy Policy Contact

Utilities

Working Days Calculator

Calculate working days between two dates, excluding weekends and holidays

Text Processing

Vowel-Consonant Processor

Deterministically analyze, replace, remove, or duplicate English vowels and consonants with position statistics and an audit trail.

Health

Volume of Distribution Calculator (Vd)

Calculate the apparent volume of distribution Vd in two modes. (A) One-compartment IV bolus: Vd = Dose / C0 (C0 = concentration extrapolated to t=0). (B) From clearance and half-life (linear kinetics): Vd = CL · t½ / 0.693. Vd is an APPARENT (theoretical) volume, not an anatomical one — highly tissue-bound drugs (digoxin ≈ 7 L/kg, amiodarone ≈ 66 L/kg) can exceed total body water, while highly plasma-protein-bound drugs (warfarin ≈ 0.14 L/kg) fall far below it. Optional body-weight input converts the result to L/kg. Note: Vd = Dose/C0 gives Vc (initial); Vss (steady state) and Vz (terminal) differ for multi-compartment models, and oral dosing returns Vd/F. Not medical advice.

Math & Numbers

Voltage Regulation Calculator (ΔU%)

Compute transformer or feeder voltage regulation from equivalent-circuit parameters: ΔU% ≈ (I·R·cosφ ± I·X·sinφ)/U·100. Returns both the approximate (linear) and exact (phasor) values; supports lagging, unity and leading power factor.

Media

Video Watermark Remove

Remove or blur watermarks and logos from videos by specifying the watermark area

Text Processing

Voice / Tone of Voice Auditor

Audit text against a four-axis voice print (Formal/Casual, Confident/Cautious, Optimistic/Concerned, Playful/Serious) with a curated lexicon. Optional brand-reference comparison gives a 0–100 deviation.

Math & Numbers

Wavelength Calculator (λ = v/f, period, wave number, angular frequency)

Solve wavelength, frequency, or wave speed from v=f·λ, with derived period, angular frequency, wave number, and photon energy

Design

Web Font Pairing Lab

Preview a heading + body Google Fonts pairing with weight and line-height controls, and copy a ready-to-paste CSS @import + variables snippet. Curated 22-face registry plus 7 proven pairing presets.

Math & Numbers

Voltage Divider Calculator

Calculate divider output voltage, solve for R1 or R2, and evaluate load effects with a circuit diagram

Math & Numbers

Cable Voltage Drop Calculator

Compute cable voltage drop from current, length, conductor size (AWG/mm²) and material, for DC, single-phase and three-phase circuits

Math & Numbers

Watt to HP

Convert watts to horsepower with configurable decimal precision

Math & Numbers

Watt to KW

Convert watts to kilowatts with configurable decimal precision