All Tools

Browse our full collection of free, accurate online tools

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Grammar Checker

Check grammar, spelling, and punctuation errors in your text. Get suggestions for style improvement and clari…

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🔄

Sentence Rewriter

Rephrase sentences while keeping the original meaning. Choose formal, casual, simplified, or academic rewriti…

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📝

Paragraph Generator

Generate well-structured paragraphs on any topic with proper topic sentences, supporting details, and transit…

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🔍

Plagiarism Checker

Check your text for plagiarism by comparing against web sources. See matching phrases and their source links.

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📋

Text Summarizer

Summarize long articles and documents into key points. Choose summary length and format — bullets or paragrap…

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🎓

Essay Title Generator

Generate compelling essay and paper titles from your topic. Get academic, creative, and attention-grabbing ti…

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🔃

Article Spinner

Rewrite articles with synonym replacement and restructuring. Create unique versions while maintaining readabi…

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📊

Readability Score Checker

Analyze readability with Flesch, Kincaid, and Fog indexes. Get specific suggestions to make your writing clea…

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📰

Headline Analyzer

Score your headlines for emotional impact, word balance, and CTR potential. Improve blog titles and email sub…

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🎭

Tone Detector

Analyze the emotional tone of your text — formal, casual, confident, friendly, or urgent. Match tone to your …

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⚡

Ohm's Law Calculator

Enter any two known electrical values — voltage, current, resistance, or power — and instantly solve for the …

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🏗️

Beam Deflection Calculator

Calculate maximum deflection, slope, and bending moment for simply-supported and cantilever beams under point…

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📐

Unit Converter (Engineering)

A precise engineering unit converter covering length, force, pressure, energy, power, torque, and temperature…

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🌈

Resistor Color Code Decoder

Instantly decode 4, 5, and 6-band resistor color codes to find resistance, tolerance, and temperature coeffic…

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🔩

Stress & Strain Calculator

Calculate axial stress, strain, and Young's modulus instantly from force, cross-sectional area, and elongatio…

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RC/RL Time Constant Calculator

Calculate the time constant τ, cutoff frequency, and visualize charge/discharge curves for RC and RL circuits…

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🎯

Projectile Motion Solver

Instantly compute range, maximum height, flight time, and full trajectory arc for any projectile — just enter…

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Moment of Inertia Calculator

Calculate area and mass moments of inertia for rectangle, circle, I-beam, and hollow tube cross-sections — wi…

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💨

Ideal Gas Law Calculator

Solve PV = nRT instantly — enter any three variables and this calculator finds the fourth, with selectable pr…

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🔌

Voltage Divider Calculator

Calculate output voltage from any two-resistor divider, solve backwards for the resistor you need, factor in …

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🔢

Significant Figures & Rounding Tool

Count significant figures in any measurement, round values to a specified number of sig figs, and correctly p…

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Thermal Expansion Calculator

Calculate linear, area, and volumetric thermal expansion for metals, glass, concrete, and custom materials us…

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