Free Web Utilities — Calculators, Planners & Everyday Browser Tools

Featured Free Web Utilities

• Free Invoice Generator — Create PDF Invoices Online
  Generate professional invoices instantly. Add line items, taxes, logo, then download as PDF. Best for freelancers and small businesses. Open Free Invoice Generator →
• Free Visual Finance Planner — Budget & Cashflow Tool
  Plan budgets and model cashflow scenarios on an interactive canvas. Best for small business owners. Open Finance Planner →
• Free Mortgage Calculator — Monthly Payment & Amortisation — Calculate monthly mortgage payments, total interest, and full amortisation schedules
• Free Budget Calculator — Personal & Business Budgeting Tool — Track income, expenses, and savings in this free browser budget tool
• Free Arc Flash Safety Calculator — Incident Energy & PPE Calculator — Calculate arc flash incident energy and required PPE level for electrical safety
• Free 5 Whys Root Cause Analysis Tool — Mobile-first 5 Whys investigation with evidence tracking and action items
• Free FMEA Tool — Failure Mode and Effects Analysis — Score failure modes and calculate RPN values in a free browser FMEA tool
• Free Piping Layout Designer — Plan and design pipe routes and layouts in your browser
• Free Junction Box Size Calculator — Size and configure electrical junction boxes to code
• Free Brain Dump Notes App — Fast no-format note capture for getting ideas out of your head
• Free Advanced Calculator — Scientific & Engineering Calculator — Extended scientific calculator with engineering and conversion functions
• Free Dividend Yield Calculator — Calculate dividend yield and return on investment for stocks

Full List — All Free Web Utilities

• 3DMarbel — Free online 3D tool to design custom printable marble runs with continuous slopes, spiral helixes, c
• 3DText — Free online 3D tool to create custom 3D text models
• 3DTray — Create custom 3D component trays and organizers online
• 3Dart — Create stunning 3D generative wall art with customizable panels, colors, and styles
• 3Dplanerplot — Generate and deform 3D planes using math functions
• 3Droadgen — Draw custom road paths on a 2D canvas and instantly preview them as a 3D road with curbs and texture
• 3dWall — Design and generate 3D wall sections with customizable dimensions and patterns
• Budget Calculator — First, set your monthly budget goals below
• CakeDesignerCost — Design custom 3D cakes with templates, custom text, and OBJ importing
• CastleCustomizer — Free online 3D tool to create custom castle models with towers, keep, moat, crenellations, wall walk
• DivYield — To estimate your dividend income, please provide:
• ELEC CEC Compliance App — A utility application called ELEC CEC Compliance App
• FinanceCompound — Fill out the form and click calculate to see insights
• GeminiShopSquareConverter — A utility application called GeminiShopSquareConverter
• Groshhh — Your fun and vibrant home grocery inventory tracker and shopping planner
• House Customizer — Free online 3D tool to create simple custom dollhouse models
• HumanBodyCustomizer — Free online 3D tool to create simple posable human forms
• LegotCustomizer — Free online 3D tool to create 9 types of custom Lgots Technic compatible parts: Beams, Axles, Pegs,
• MoneyBankCustomizer — Simple online 3D tool to assemble predefined objects (gear, rod, cube, etc
• MortgageCalc — This calculator helps you estimate your monthly mortgage payments for different loan terms
• OrnateCustomizer — Design custom right-angle plates with various embellishments (Sphere, Cone, Octagon, etc
• PlanterCustomizer — Free online 3D tool to create custom planter boxes / raised garden beds with separate parts
• Prespective Test — Set horizon and vanishing points (using sliders for off-image control) with thicker visual guides
• Spring Crop Planner — Visually plan garden beds, track individual crop progress with timelines, and gain insights into you
• SquareShopifyInventoryConverter — Convert Shopify product and inventory exports into Square import files before a market, then convert
• TableCustomizer — Free online 3D tool to create custom workbenches or desks with separate parts
• ToothTray — Free online 3D tool to design custom toothbrush holders
• Trace2Dto3Dprint — A utility application called Trace2Dto3Dprint
• Adv Calculator — A utility application called Adv Calculator
• Calculator — A utility application called Calculator
• Caroprompt — Complete 8-slide carousel generation tool designed for @solvprob
• Epicircle Drawing Fourier — Draw freehand or upload an image to generate a mathematical Fourier Transform animation
• Hero Section Freeprompt Generator — Type in your exact product or brand details to override the AI randomization
• Postprompt Digitalhomepage — A utility application called Postprompt Digitalhomepage
• Postpromptsolvprob — Complete 8-slide carousel generation tool designed for @solvprob
• Singlhtmlpromptgen2 — A self-contained studio for designing advanced prompt packs that tell another LLM how to create a po
• Timer Demo — This demo shows how a timer app would work

Browse Other Free App Categories

• Free Business & Management Apps — Invoice generator, FMEA tool, finance planner, inventory, booking, and RCA tools
• Free Engineering & 3D Design Tools — 3D mould builder, STL generator, piping designer, junction box, arc flash calculator
• Free Reliability & Maintenance Tools — FMEA, 5 Whys, root cause analysis, benefit-effort matrix, capacity planning
• Free Web Utilities — Calculators, mortgage tool, budget planner, timers, and converters
• Free Media & Art Tools — Painting, audio visualiser, GIF creator, video frame editor
• Free Education & Learning Apps — Interactive simulations, science tools, and learning utilities
• Free Browser Games — Play Instantly — 40+ action, strategy, simulation, and trades-themed games

Need a Custom Tool Built for Your Business?

SolvProb builds custom web apps, business tools, and automation systems for small businesses and industrial companies across British Columbia. Every free tool in this gallery was built by the same engineers who build paid custom software.