Free Online Tools — Right in Your Browser

CrispToolHub is a free online toolkit with 185+ tools across 16 categories — PDF toolkit, AI resume builder and career tools, health and fitness calculators, date and time tools, image editor, financial calculators for India and the US, international tax tools, developer utilities, text tools, education calculators, math and science calculators, unit converters, social media tools, fun tools, business tools and an online ruler and compass. Everything runs entirely in your browser — no account required, no file uploads to servers, completely free forever.

Yes — every tool on CrispToolHub is completely free with no hidden charges, no premium tiers for basic features, and no watermarks. The site is supported by advertising so tools can stay free for everyone.

No account is ever required for any free tool. Just open the tool and use it instantly. No sign-up, no email, no personal information needed.

Your data never leaves your device. All processing happens locally in your browser using WebAssembly and client-side JavaScript. We never see your PDFs, resumes, images or financial information. CrispToolHub was built by a security engineer specifically with this privacy principle in mind.

The PDF toolkit includes 10 free tools: compress PDF, merge PDFs, split PDF, PDF to Word converter, Word to PDF, PDF to image, image to PDF, password protect PDF, unlock PDF, and rotate PDF. All tools process files locally in your browser.

The resume and career suite includes 10 tools: AI resume builder with 38 templates across 80+ job roles, ATS score checker, AI resume optimizer, AI cover letter generator, AI interview question generator (based on your actual resume), LinkedIn bio generator, job application tracker, resume match tool, skills gap analyzer and job search directory.

The health toolkit includes 8 free calculators: BMI calculator, BMR and TDEE calculator, body fat percentage calculator, ideal weight calculator, calorie deficit calculator, water intake calculator, pregnancy due date calculator and ovulation calculator. All include a medical disclaimer and support both metric and imperial units.

The date and time section includes 9 tools: age calculator, days between dates, business days calculator, date difference calculator, time zone converter, countdown timer, Unix timestamp converter, a Pomodoro focus timer and a holiday calendar covering 10 countries for 2025-2027.

The education section includes 6 tools for students: CGPA calculator with university-specific converters, GPA calculator for the US 4.0 scale, grade calculator, attendance calculator, study hours planner and percentage calculator. The CGPA tool supports VTU, Mumbai University, Anna University and other Indian universities.

The financial calculator suite covers mortgage with full amortization table, SIP and compound interest, salary and tax comparison for India (new vs old regime FY2025-26), US income tax, EMI, net worth, credit card payoff and more. It also includes a loan eligibility calculator (how much loan you qualify for on your salary), a GST calculator with the updated GST 2.0 rates, an HRA exemption calculator, a US sales tax calculator for all 50 states, a tip and bill-split calculator, and a discount calculator. The international section covers UK income tax and stamp duty, Canada income tax with RRSP and TFSA calculators, Australia income tax and superannuation, plus UAE VAT, a Zakat calculator, EU VAT and a currency converter. It also includes RD (recurring deposit), SSY (Sukanya Samriddhi Yojana), CAGR and a 50/30/20 monthly budget calculator.

The developer toolkit includes 10 browser-based tools: JSON formatter and validator, Base64 encoder and decoder, color converter (HEX/RGB/HSL/CMYK with WCAG contrast checker), meta tag generator, UTM campaign URL builder, QR code generator (URL, WiFi, vCard, PNG/SVG), password generator using cryptographically secure random values, a regex tester with live match highlighting and capture groups, a CSS gradient generator (linear, radial and conic) and a favicon generator that outputs every size plus a multi-size ICO.

The business tools section helps freelancers and small businesses handle admin for free, covering the full billing cycle. It includes an invoice generator with line items, discount and tax (plus a GST invoice format for India with CGST + SGST or IGST and HSN/SAC codes), a receipt maker that issues proof of payment with a payment method and transaction ID, and a quotation generator for price estimates with a validity date and terms. Each downloads a clean PDF, runs in your browser with no sign-up, and uploads nothing.

The math toolkit includes 8 tools: scientific calculator with trig and logarithms, percentage calculator with 6 modes, fraction calculator with step-by-step working, prime number checker and factorizer, LCM and HCF calculator, number base converter (binary/hex/octal), statistics calculator and Roman numeral converter.

The unit converter section has 8 converters: length (metric, imperial, astronomical), weight and mass, temperature (Celsius/Fahrenheit/Kelvin), speed (km/h, mph, knots, Mach), area (including Indian units like bigha), volume and cooking measurements, data storage (binary and decimal) and fuel efficiency.

The social media toolkit includes 5 tools: AI Instagram bio generator, hashtag generator for Instagram/Twitter/LinkedIn/TikTok, character counter with platform-specific limits, social media image resizer with presets for all major platforms, and AI YouTube title generator.

The fun tools section includes 3 entertainment tools to share with friends: a love calculator that gives a playful compatibility score between two names, a numerology calculator that reveals your life path, destiny, soul urge and personality numbers from your name and birth date, and a random name generator for person names by country, baby names with meanings, usernames, business names and fantasy characters. The love and numerology tools are for entertainment only.

Yes — all tools are fully responsive and work on iOS and Android browsers. PDF and image processing uses WebAssembly which runs efficiently on mobile devices. Some heavy AI features may be slower on older devices but will still work correctly.

Yes — the CrispToolHub blog has practical guides on resume writing, tax saving, PDF compression, health calculators and more. Each guide links to the relevant free tool.