Free Online Tools

250 practical tools for everyday tasks, organized by category. No sign-up, no fuss.

Handbook 21

Long-form guides that walk you through real decisions and show you which free tool helps at each step.

Energy Cut Electricity Costs with Measurements and Tariff Comparisons November 4, 2026 · 16 min Security Buying Online: Withdrawal, Returns and Fake Shops October 30, 2026 · 16 min Media & Images Optimize images for the web: formats, rights, metadata and load time October 23, 2026 · 15 min

Playbooks & Workflows 29

Guided workflows that chain several tools into one complete result. Not single tools, but full step-by-step journeys.

Workflow Make Your Password Safer Check, harden, and memorize your password in one connected workflow. 3 Steps 3 Tools Workflow Publish Content & SEO Optimize your text, check word count and create clean URL slugs. 4 Steps 4 Tools Workflow Run the Numbers on Your PV System Calculate yield, feed-in compensation and subsidy with your own system data. 4 Steps 4 Tools Workflow Optimize Images for the Web Crop, resize, convert and compress an image for the web. 4 Steps 4 Tools Workflow Plan from Salary to Pension Work through net income, an estimate of your state pension, and a possible pension gap. 3 Steps 3 Tools Workflow Run the Numbers on Buying a Home Work through purchase costs, equity and monthly mortgage with your own numbers. 3 Steps 3 Tools

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Workflow Prepare Your Website for Launch Check the tech, metadata and final code before launching a website. 4 Steps 4 Tools Workflow Freelancer: Quote to Invoice Prepare your hourly rate, e-invoice and SEPA QR code for your invoice. 5 Steps 5 Tools Workflow Calculate BMI & Calorie Needs Calculate your BMI and daily calorie needs as a rough guide. 2 Steps 2 Tools Workflow Create a Brand Kit Put together brand colors, contrast, gradient and favicon for your brand kit. 4 Steps 4 Tools Workflow Check & Pay an Incoming Invoice Check the IBAN, VAT, GiroCode and deadlines of an incoming invoice. 4 Steps 4 Tools Workflow Debug JWT & API Auth Check JWT tokens, timestamps, and Base64 or JSON fragments of an API. 5 Steps 5 Tools Workflow Make Your Website Faster Audit performance and optimize images and code for more speed. 8 Steps 8 Tools Workflow Anonymize & Share a Screenshot Safely Check metadata, redact sensitive parts, and clean up images. 4 Steps 4 Tools Workflow Clean Up CSV & JSON Data Convert an export, remove duplicates, sort and check it. 5 Steps 5 Tools Workflow Prepare an Event Generate a Wi-Fi QR, a sign-up QR and a countdown for your event. 4 Steps 4 Tools Workflow Employed or Self-employed? Compare the hourly rate you would need as self-employed with your net income. 3 Steps 3 Tools Workflow Plan Your First Own Flat From the affordability check through moving to handover, step by step. 9 Steps 9 Tools Workflow Prepare a Presentation Build a timeline, speaking time and cue cards for your presentation. 4 Steps 4 Tools Workflow Print-Ready and Verified QR Code Generate a QR code, scale it to print size, compress it and read it back. 4 Steps 4 Tools Workflow Craft Photos as a PDF Report Check photos of completed work, bring them to A4 and turn them into a small PDF report. 4 Steps 4 Tools Workflow End the Tenancy and Move Out Write the notice, record the meter readings and hand over the flat cleanly. 3 Steps 3 Tools Workflow Private Loan Between Relatives Agree the loan, confirm the hand-over and document the repayments. 4 Steps 4 Tools Workflow Rent and Book a Holiday Flat Check the flat, work out the budget, build the packing list: three steps to booking. 3 Steps 3 Tools Workflow Plan and Measure an Instagram Content Wave Create quote cards and a carousel, plan your posts and measure their impact. 6 Steps 6 Tools 🔧 Workflow Finish Audio and Video for YouTube and Podcast Trim pauses, correct subtitles, check chapters and create graphics for your release. 5 Steps 5 Tools Workflow Client Web Design Project from Brief to Sign-off Document the brief, design, quote and feedback through sign-off, then review project hours. 8 Steps 8 Tools Workflow Prepare Photos from Storage to Website Name a batch of photos, correct capture dates and prepare it for the web with alt text and a contact sheet. 6 Steps 6 Tools Workflow Write the Offer, Follow Up and Get Paid Create an offer, plan follow-ups, review your hours and invoice the work. 5 Steps 5 Tools

Collection 89

Open Collection

Many small single-purpose tools, each with its own page and URL. Encoding, text, math, randomness and more, grouped in one place.

Web & Development 45

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JSON Formatter Format, minify, and validate JSON data with syntax highlighting, keeping raw data readable or ready for efficient transfer. GDPR-compliant. Base64 Encoder / Decoder Encode text or decode Base64 data, for instance in email attachments and data URLs, whenever binary data must be transmitted as text. GDPR-compliant. Hash Generator Generate cryptographic hashes with MD5, SHA-1, SHA-256, and SHA-512 from your text to verify data integrity and file checksums. GDPR-compliant.

Security & Privacy 12

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Password Generator Generate secure, customizable passwords to your specifications for length, character types, and exclusion rules, suited to any account that needs protection. Password Checker Test your password security with a heuristic check analyzing length and patterns, so you can quickly spot potential weak points. GDPR-compliant. WiFi QR Generator Create a QR code with your WiFi credentials so guests can connect to your network instantly, without typing the login details. GDPR-compliant.

Text & Writing 17

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Word Counter Count words, characters, sentences, and paragraphs in your text and estimate the reading time, useful for blog posts, research papers, and long documents. Case Converter Convert text in real time between UPPER, lower, Title, and Sentence case, practical for formatting in texts, code, or headings. GDPR-compliant. Lorem Ipsum Generator Generate filler text in the Lorem Ipsum style for layouts, designs, and print, with selectable amount and paragraph structure. GDPR-compliant.

Images & Media 57

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QR Code Generator Generate QR codes from text, URLs, or any data without signing up, right in your browser, for content you want to share and open instantly. Image Compressor Compress images with adjustable quality, target size, and resolution without leaving the page, your images stay completely local on your device. Image Converter Convert images, including iPhone photos in HEIC format, to JPEG, PNG, WebP or BMP, fully client-side in your browser, without your images ever leaving your device.

Numbers & Math 15

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BMI Calculator Calculate your Body Mass Index (BMI) and see which weight category you fall into, a useful orientation for health and well-being. GDPR-compliant. Percentage Calculator Calculate percentages, proportions, and changes in three calculation modes, for commission calculations, discounts, or percentage shifts. GDPR-compliant. Calculator Free online calculator with standard and scientific modes, no signup required, for quick calculations of all kinds and sizes. GDPR-compliant.

Time & Date 7

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Date & Age Calculator Calculate days between dates, add or subtract days, and get the calendar week and day of the week, helpful for scheduling and date planning. GDPR-compliant. Time Zone Converter Convert times between time zones, with date, time, and offset included, and organize your appointments across time boundaries. GDPR-compliant. Countdown Timer Count down live to a target time with a large display, entirely in your web browser without any registration or setup. Runs in your browser, GDPR-compliant.

Lifestyle 48

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Sticky Notes Create colorful sticky notes in your browser, position them by drag-and-drop, and export your notes as JSON for further processing. Kanban Board Use a free Kanban board in your browser with drag and drop, persistence, and JSON export to organize your tasks clearly. Tip Calculator Calculate the tip and total amount, split between multiple people for a fair division, so everyone pays their share at a group meal. GDPR-compliant.

Business & Admin 41

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VAT Calculator Convert between net and gross with German VAT at the rates of 19 % and 7 %, ideal for accurate pricing in everyday commerce. GDPR-compliant. IBAN Validator Check IBANs with MOD-97 right in your browser, your input stays local, and instantly spot errors in your account data without delay. SEPA QR Generator (GiroCode) Generate a SEPA-EPC QR code (GiroCode) from IBAN, name and amount, fully local and processed directly in your browser.

Energy & Environment 8

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Solar Yield Calculator Estimate the annual solar yield of your PV system based on region, orientation and roof tilt angle, entirely in your browser. Solar Payback & ROI Calculator Find out when your PV system pays off, with break-even time and expected return on investment, entirely local and private. Runs in your browser, GDPR-compliant. Balcony Solar (Plug-in PV) Calculator Work out whether your balcony solar system pays off, with calculated savings and required payback period, all local. Runs in your browser, GDPR-compliant.