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Estimate GPT/Claude token counts before sending to an API. See context window usage.
Open Tool →Compare GPT-4, GPT-3.5, and Claude API costs across models based on token usage.
Open Tool →Evaluate machine translation quality with n-gram precision breakdown and brevity penalty.
Open Tool →Get precision, recall, F1, accuracy, specificity, and MCC from TP/FP/TN/FN.
Open Tool →Build a network layer by layer and see total trainable parameters and memory size.
Open Tool →Estimate GPU memory needed to run or fine-tune an LLM by parameter count and precision.
Open Tool →Get exact sample counts for train, validation, and test sets from your dataset size.
Open Tool →Calculate perplexity from token probabilities to evaluate language model quality.
Open Tool →Compare two vectors or embeddings — used in semantic search and RAG pipelines.
Open Tool →Calculate Levenshtein distance between two strings — used in fuzzy matching and spell-check.
Open Tool →Calculate p-value from z-score or t-score for statistical significance testing.
Open Tool →Calculate download size and disk space by parameter count and precision level.
Open Tool →Analyze text for word frequency, bigrams, and trigrams — used in NLP preprocessing.
Open Tool →Calculate minimum sample size needed for a statistically valid A/B test.
Open Tool →Calculate cross-entropy loss from predicted probabilities — the standard classification loss function.
Open Tool →Calculate ROC-AUC from classifier scores and true labels using the Mann-Whitney method.
Open Tool →Visualize step decay, cosine annealing, and warmup learning rate schedules interactively.
Open Tool →Find filler phrases in your AI prompts and trim tokens without losing meaning.
Open Tool →Watch optimization happen live on a loss surface. See overshooting, convergence, and local minima.
Open Tool →Click to add points and watch the best-fit line learn via gradient descent, step by step.
Open Tool →Watch a sigmoid decision boundary fit binary-labeled data through gradient descent.
Open Tool →Click to place points and watch K-Means group them, centroids moving until convergence.
Open Tool →Add training points, then classify a new point and see exactly which neighbors voted.
Open Tool →Watch a decision tree split the feature space step by step using Gini impurity.
Open Tool →See Bayes' theorem compute posterior probabilities live from prior and evidence.
Open Tool →See the maximum-margin boundary and support vectors form between two classes.
Open Tool →Watch principal component axes appear, showing directions of maximum variance.
Open Tool →Enter inputs and watch data flow through a small network with real numbers shown live.
Open Tool →Watch gradients flow backward through a network using the chain rule, live.
Open Tool →Compare ReLU, Sigmoid, Tanh, Leaky ReLU, and GELU curves and derivatives side by side.
Open Tool →Adjust logits and temperature, watch raw scores become a probability distribution.
Open Tool →Enter a sentence and see an attention heatmap — the mechanism behind GPT and Claude.
Open Tool →Watch a kernel slide across a pixel grid, computing the output feature map live.
Open Tool →Download any YouTube video's thumbnail in HD and every available resolution. Paste a URL, get instant download links.
Open Tool →Paste a raw YouTube transcript — clean it, remove timestamps, or export as SRT subtitle format.
Open Tool →Create a shareable YouTube link that jumps straight to an exact moment in a video.
Open Tool →Generate customized YouTube embed code — autoplay, loop, privacy mode, and responsive sizing.
Open Tool →Estimate potential ad revenue from YouTube views based on CPM, niche, and audience.
Open Tool →Generate SEO tags and hashtags from your video title or keywords to improve discoverability.
Open Tool →Extract the video ID from any YouTube URL format — watch links, short links, Shorts, and embeds.
Open Tool →Build a professional, SEO-friendly video description with timestamps, links, and hashtags.
Open Tool →Count words, characters, sentences, paragraphs and reading time instantly.
Open Tool →Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case and more.
Open Tool →Generate classic Lorem Ipsum placeholder text for mockups and designs.
Open Tool →Calculate Body Mass Index with healthy weight range and BMI Prime.
Open Tool →Five percentage formulas in one — discounts, tax, growth and more.
Open Tool →Convert length, weight, temperature, area, volume, speed and data units.
Open Tool →Generate cryptographically secure random passwords with entropy meter.
Open Tool →Combine multiple PDF files into one document. Drag to reorder before merging.
Open Tool →Extract a page range, specific pages, or split every page into its own file.
Open Tool →Fix sideways or upside-down pages. Rotate all pages or select individual ones.
Open Tool →Drag to reorder pages, delete unwanted ones, or duplicate any page visually.
Open Tool →Reduce PDF file size by re-compressing embedded images. See before/after sizes.
Open Tool →Add a text watermark to every page with full control over size, opacity, and angle.
Open Tool →Number every page automatically. Choose position, format, and starting number.
Open Tool →Convert every page into a high-quality JPG or PNG image, download individually or all at once.
Open Tool →Convert a .docx file to PDF directly in your browser, text and formatting preserved.
Open Tool →Convert an Excel or CSV file to a printable PDF table entirely in your browser.
Open Tool →Draw your signature and drop it anywhere on your PDF, then download the signed file.
Open Tool →Count words, characters, sentences, and pages in any PDF. Per-page breakdown included.
Open Tool →Extract all text from a PDF instantly. Copy to clipboard or download as a .txt file.
Open Tool →Instantly count PDF pages and see page dimensions in both points and millimetres.
Open Tool →Convert JPG, PNG, or WebP images to a PDF. Upload multiple, drag to reorder, download.
Open Tool →See hidden PDF properties — author, creator app, creation date, PDF version, and more.
Open Tool →5 formulas: Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau. Improvement suggestions included.
Open Tool →Live regex with match highlighting, capture groups, flags, replace mode, and quick-pattern snippets.
Open Tool →Decode any JWT token — see header, payload, all claims, and expiry countdown. Nothing leaves your browser.
Open Tool →Add GST, remove GST from inclusive price, or split into CGST + SGST / IGST. All Indian GST slabs.
Open Tool →Lumpsum or SIP mode. Year-by-year growth table, total interest earned, and inflation-adjusted value.
Open Tool →Convert text to Morse or decode Morse to text. Play audio with adjustable speed. Bidirectional.
Open Tool →Live Markdown editor with real-time HTML preview. Export as clean HTML. No external dependencies.
Open Tool →Focus timer with custom work/break intervals, session counter, audio alert, and keyboard control.
Open Tool →Create professional GST invoices and download as PDF — add line items, GST, notes, and bank details.
Open Tool →Compress JPG, PNG, and WebP images with a quality slider. Before/after size comparison. 100% private.
Open Tool →Generate complementary, triadic, analogous, and tetradic palettes. Export as CSS variables or JSON.
Open Tool →How much loan can I get? Enter income and existing EMIs to find your max eligibility and FOIR.
Open Tool →Find your ideal bedtime or wake-up time based on 90-min sleep cycles. Wake up refreshed, not groggy.
Open Tool →Build linear, radial, and conic CSS gradients visually. Multi-stop, angle control, copy CSS instantly.
Open Tool →Daily water target by weight, activity, and climate. Includes hourly schedule and hydration tips.
Open Tool →Find your zodiac sign from your date of birth, plus element, ruling planet, and traits.
Open Tool →Get today's personalized reading for any sign — love, career, health, and lucky numbers.
Open Tool →Most free tool websites track your data, slow you down with ads, or demand sign-up before you can use a simple calculator. We built HukhLatri differently.
Every tool runs in your browser. Text you enter, health data, or passwords generated never reach any server. We cannot see them — even if we wanted to.
Our calculators use verified formulas: WHO standards for BMI, RBI-standard EMI calculations, NIST unit definitions, and W3C-standard cryptographic APIs. Every tool is tested against known reference values.
Each tool explains how it works, the formulas behind it, and when to use each option. Our blog adds 20 in-depth articles — because understanding a tool makes it genuinely useful.
Not one tool requires a login, email, or personal information. Open the page, use the tool, close the tab. Nothing is stored or remembered.
Our EMI calculator uses RBI-standard formulas. Our percentage guide uses GST examples. Our age calculator covers UPSC eligibility. Built in J&K for Indian contexts.
Fully responsive — works on smartphones, tablets, and desktops without any app download. The interface adapts automatically to your screen size.
Yes, every tool on HukhLatri is completely free with no signup, no account, and no hidden paid tiers. The site is supported by advertising, not subscriptions.
Yes. Every tool runs entirely in your browser using JavaScript. Files, text, and data you enter are processed on your own device and are never uploaded to any server.
No. All tools work directly in your web browser on desktop, tablet, or mobile — no downloads or installations required.
Yes, every tool is fully responsive and works on smartphones and tablets, not just desktop computers.