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Browse the tool catalog | Page 39

Search and filter the online tool directory by task, format, and category, then open detailed pages with clear inputs, examples, and execution context. Page 39.

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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

Media

Video Watermark Image

Add an image watermark to videos with customizable position, size, opacity, and timing

Media

Video Watermark Text

Add text watermark to videos with customizable position, font size, color, opacity, and timing

Media

Video Vertical Flip

Flip video vertically (top to bottom)