24 products
Calculators apps
Everything the AppRater community filed under calculators, newest first. AppRater reviews every listing before it appears.
SizeCompare
Web
SizeCompare
SizeCompare helps users understand physical dimensions by comparing phones, tablets, laptops, tires, animals, and everyday objects at true scale. It includes verified dimensions, calculators, and custom measurements. Free with no ads or signup.
FailFlow
Web
FailFlow
FailFlow provides free online date, calendar, countdown and planning tools — calculate days between dates, count down to events, track week numbers and plan around holiday calendars. No signup required.
Blue Bloodhound
Web
Blue Bloodhound
Trucking-business research for U.S. owner-operators and small fleets: costs, load boards, factoring, fuel cards, compliance and free calculators.
PawBudget
Web
PawBudget
PawBudget helps dog owners plan their budget with a free interactive dog ownership cost calculator (by breed, age, region and care level), a science-based dog age calculator, plus senior dog care guides.
BiznTools
Web
BiznTools
BiznTools helps you finish everyday business tasks: check pricing and profit, plan inventory, prepare quotes and invoices, record expenses and work orders, or handle PDFs and data. Its 50 free tools explain their methods and limits. Calculations and file processing run in your browser, with local PDF or CSV downloads where supported. No account is required.
LarkKit
Web
LarkKit
Free online tools, done right. A collection of 10 free online tools that run right in your browser, no sign-up needed: image tools (SVG to PNG, DPI converter, image splitter, image to SVG) and practical calculators (concrete, paver, mulch, decking, depreciation schedule, ring size chart).
OpenTencor AI
Web
OpenTencor AI
Free GPU cloud compute pricing education for AI workloads: a free GPU cost calculator, plain-English guides explaining on-demand vs spot vs reserved pricing, and a cloud provider directory. Pure educational resource — no compute sold, no marketing claims, runs in your browser with no sign-up.
CalcifyAll
Web
CalcifyAll
CalcifyAll is a free collection of 30+ online calculators: finance (loan, mortgage, ROI, paycheck), education (GPA, easy grader, CGPA), health (BMI, calorie, body fat, water intake), and everyday math (tip, discount, unit & currency converters). No sign-up, instant results, mobile-friendly.
GetAnythingPro
Web
GetAnythingPro
GetAnythingPro offers 204 free online tools — PDF converters, image tools, text utilities, calculators and more. Files are processed without being uploaded to our servers; no sign-up required.
Calnex
Web
Calnex
Free online calculators and unit converters — 217 tools in 12 languages. No signup, no ads, no paywalls. Fast and free to use.
BoundHive KDP Cover Size Calculator
Web
BoundHive KDP Cover Size Calculator
A free browser calculator for independent authors and paperback cover designers. Enter trim size, ink and paper type, and the final interior page count to calculate the full-wrap cover width and height, spine width, panel positions and barcode safe area for a supported KDP paperback configuration. No account is required. Results show a rules version and links to Amazon KDP source guidance. Recalculate when the final page count changes, and check the finished file against current KDP requirements. The calculator does not inspect artwork, image resolution or hardcover wraps. BoundHive is independent of Amazon. Submitted by a BoundHive representative; this listing covers the standalone free calculator.
Nest of Tools
Web
Nest of Tools
34 free online tools — calculators, unit converters, text tools, developer tools, generators, SEO tools, and fun random utilities. Everything runs 100% in the visitor's browser: private, no sign-up, no downloads.
WebChatKit Calculators
Web
WebChatKit Calculators
WebChatKit is a curated shelf of 370 focused online calculators for practical jobs — logistics, construction, food science, engineering, sports, and business. Every tool shows its formula and step-by-step working next to the result, so you can verify the math instead of trusting a bare number. Many calculators are authored natively in 20+ languages.
WebTaskTools
Web
WebTaskTools
WebTaskTools is a library of 1,965 free online tools — converters, PDF tools, image tools, QR generators, calculators and SEO checkers. Everything runs in the browser, no signup, no watermarks.
Stair Calculator
Web
Stair Calculator
Free online stair calculator: measure risers, treads, angles and stringers for perfect stairs. Design perfect stairs in seconds.
ToolVero
Web · 1 recommendations
ToolVero
Free privacy-first online tools — 70+ PDF, image, text, calculator, developer and generator tools that run entirely in your browser.
FishCare AI
Web
FishCare AI
Free aquarium care platform for freshwater fish keepers. Species profiles with tank size, temperature, pH, hardness, diet and temperament; practical care guides; a fish health library that works from symptoms to likely causes; and free calculators for tank size, fish compatibility, water parameters, feeding and aquarium planning. Photo-based fish identification covers 866 species. No signup, no paywall; a companion iPhone app adds water logging and care reminders.
Numeros
Web
Numeros
Free library of 400+ calculators where every result shows its exact formula, a step-by-step worked example, and the published source behind it — so users verify the math instead of trusting a black box. Covers finance, health, math, engineering and construction. No sign-up, no limits, 100% private: every calculation runs entirely in your browser.
Startup Costs
Web
Startup Costs
Startup Costs helps people compare six small-business formats across all 50 U.S. states, inspect source-dated benchmarks and visible assumptions, and test editable calculators for startup budget, break-even, cash runway, payback and service capacity. The profiles are transparent reference scenarios, not local quotes, forecasts or personalized financial advice. Core content and tools are free; optional paid financial models are separate.
Trusty Calculator
Web
Trusty Calculator
Trusty Calculator offers 433 free tools with transparent formulas, assumptions, units, worked examples, and primary sources.
Anyserv
iOS · 9 recommendations
Anyserv - Free web tools for finance, business, sport, health, and daily life. In your browse
AnyServ is a free online platform offering a growing suite of financial calculators, converters, and business tools that run entirely in your browser – no registration, no downloads, no paywalls. All calculations are processed locally on your device, meaning your data never leaves your browser. This makes AnyServ fully ideal for users who value privacy alongside convenience. Available tools include a VAT calculator, mortgage calculator, APRC/RRSO calculator, salary calculator, currency converter, invoice generator (PDF), BMI calculator, and more – with new tools added regularly. All formulas follow official tax and banking standards. AnyServ supports 5 languages (EN, PL, DE, FR, ES) and works seamlessly on both desktop and mobile. Built for individuals, freelancers, and small businesses who need accurate results instantly – without the friction of traditional software or paid services.
Vesturio
iOS
Vesturio - Easy financial management
Vesturio, your all-in-one financial companion, is a powerful SaaS tool designed for seamless budgeting, expense tracking, and investment calculations. Take control of your finances with intuitive features that simplify budget management, provide real-time expense insights, and empower you to make informed investment decisions. Whether you're a savvy investor or just starting your financial journey, Vesturio is your trusted partner for achieving financial goals with confidence and ease.
Kody Tools
iOS · 30 recommendations
Kody Tools - Hub of Online Calculators and Converters
Kody Tools is basically a hub of tools. As of now, it contains around 300+ calculators and converters related to mathematical calculation, financial calculation, measurement unit converters, etc. The tools are not only suitable for developers but also for each and every individual. The website is growing and we are planning to add more useful tools in the upcoming future.
QuestionScout
iOS · 41 recommendations
QuestionScout - forms and surveys that your customers will love
QuestionScout is an all-in-one online form builder tool that enables you to create beautiful, responsive forms that your customers will love. Collaborate in real-time with your clients and your team and make creating forms and surveys a team effort, resulting in better data and more efficient decision making. Furthermore, it means that our users can work on a single form as a group to make better and faster decisions. In simple words, every change made by any user is instantly visible to the rest of the group. In addition, everyone is also able to check out the rest of the team's current activity. Thus, we are genuinely supporting teams, both small and large. - Multiple form types, including conversational surveys - Real-time collaboration features inside the form builder - Over 20 question types to have all your questions answered - An advanced theme editor tool with 550+ individual options - Advanced logic for fields, notification emails, thank you pages, and more - Form personalization features such as Refer To - Results AI analysis - Payments forms - Custom domains and SMTP - And much, much more!