40 products
Calculator apps
Everything the AppRater community filed under Calculator, newest first. AppRater reviews every listing before it appears.
FloatCalc+: Floating Calculator for Android
Android
FloatCalc+: Floating Calculator for Android
Calculate without leaving your app: a floating calculator that stays on top of YouTube, maps, your browser, banking or shopping apps. A one-tap operator row, powers, roots and percentages, and the expression stays on screen after = so you can edit it. Includes a currency converter and unit converter. Free for 60 minutes a day (a short ad gives a 24-hour pass); Pro removes the limit and ads and adds 30+ currencies, every unit category and premium themes.
Workflow Math
Web
Workflow Math
Free calculator comparing automation costs on Zapier, Make, n8n Cloud, Activepieces, Pabbly Connect and Integrately. Enter monthly workflow runs, action steps and trigger frequency to compare plans using each platform’s task, credit or execution counting rules. No account required. The calculator is part of a pricing comparison website with linked sources and methodology.
FreeVATCalculator
Web
FreeVATCalculator
Free online UK VAT calculator. Add or remove VAT at the UK standard rate, convert net and gross prices, and quickly work out the VAT due on purchases and sales. Free to use in the browser, no signup needed.
SAT Score Calculator
Web
SAT Score Calculator
A free browser-based Digital SAT score estimator for students, families, and tutors. Enter correct answers for the four Math and Reading & Writing modules, or use quick section totals to explore an estimated score range. The calculator models adaptive module routing and shows section estimates, a total score, and percentile benchmarks. It requires no account, installation, or payment. Results are practice-planning estimates, not official scores. This independent tool is not affiliated with College Board.
Lock It: Calculator Vault
Android
Lock It: Calculator Vault
A working calculator that opens a private vault. Keep photos, notes, passwords and 2FA codes sealed, and message or call only the people you invite. Search "Lock It: Calculator Vault" on Google Play. https://play.google.com/store/apps/details?id=com.appfactory.calculator&referrer=utm_source%3Dapprater%26utm_medium%3Dlisting%26utm_campaign%3Dfree_ads
Roof Cost Data
Web
Roof Cost Data
A free web calculator for U.S. homeowners estimating roof replacement costs from roof size, pitch, material, tear-off, stories, complexity, and location. It works without an account and links to supporting regional cost guides and roofing material comparisons.
Golf Club Reference
Web
Golf Club Reference
A free golf club database for recreational golfers. Look up 734 models from 24 brands (irons, drivers, fairway woods, hybrids, wedges and putters) and see original factory loft, lie and length figures with links to the manufacturer sources, including 198 full iron charts. Nine free browser tools need no sign-up: a what-year-is-my-club finder, iron loft finder, loft gap checker, wedge gap planner, swing weight calculator, bag gap analyzer, iron spec comparison, club length converter and a printable beginner's club guide. There is also a list of 1,919 community-listed US golf stores.
Cost My Remodel
Web
Cost My Remodel
Cost My Remodel is a web-based bathroom renovation planning calculator for homeowners in Toronto and the GTA. Describe the project, review the scope summary, and use the planning estimate to organize an early budget before HST. It supports project planning and is not a contractor bid or a guaranteed project price.
Islamic Inheritance Calculator
Web
Islamic Inheritance Calculator
Islamic Inheritance Calculator is a free online tool that computes Islamic inheritance (Faraid) shares: enter the deceased's family members and get each heir's exact Quranic share instantly, with step-by-step working shown.
Course Payout
Web
Course Payout
Free calculator showing how much course revenue remains after platform subscriptions, transaction fees and card processing. Enter course count, monthly sales and selling price to compare platforms including Teachable, Thinkific, Kajabi, Podia, Skool and Gumroad. Assumptions and sources are explained; no account required. The calculator is part of a pricing comparison website with linked sources and methodology.
GravelCalc
Web
GravelCalc - Free Gravel Calculator
GravelCalc is a free online gravel calculator. Enter a rectangle, circle or total area plus depth to get volume in cubic yards, feet and meters, weight in tons, bag count and optional cost. Choose crushed stone, pea gravel, river rock or enter a custom density. Extra tools cover French drains, paver bases, driveways and cubic-yards-to-tons conversion. US and metric units, no sign-up.
Peptide Calculator
Web
Peptide Calculator
Free peptide calculator: enter vial mg, bacteriostatic water and dose to get exact U-100 syringe units, mL per injection and doses per vial. Includes reconstitution and dosage calculators that solve for water volume and show how long a vial lasts. Runs in the browser, no sign-up. Educational tool only, not medical advice.
Chronological Age Calculator
Web
Chronological Age Calculator
Enter a date of birth and get exact age in years, months and days — leap years and uneven months handled. A test-date mode gives age on an assessment date for speech therapy and child screenings (ASQ, BRIGANCE), plus corrected age for premature babies. Free, runs in the browser, no sign-up.
Weighted Grade Calculator
Web · 1 recommendations
Weighted Grade Calculator
Weighted Grade Calculator is a free student tool for calculating a current course average. Add assignment categories, grades, and their weights to see your weighted grade instantly.
clove3d
Web
clove3d
clove3d is a free browser-based calculator for CNC machines and 3D printers. It provides instant calculations for steps per mm, feeds and speeds, and belt tension — all without any sign-up, registration, or tracking. Everything runs locally in your browser, no server required. Perfect for makers, hobbyists, and professional machinists who need quick, reliable calculations without friction.
ProRataWise
Web
ProRataWise
ProRataWise is a free browser-based pro rata calculator for insurance premiums. Enter the policy-term premium, start and end dates, and a cancellation date to see earned and unearned premium, the day count, pro rata factors, the formula, and an estimated return premium.
CalculCalories
Web
CalculCalories
Free French-language calorie calculator estimating daily caloric needs, BMR, TDEE, and macros using the Mifflin-St Jeor formula, with results for weight loss, maintenance, and bulking goals.
Consulting Rate Hub
Web
Consulting Rate Hub
Free calculator that estimates market-aligned hourly, daily, and project consulting rates based on specialty, industry, city, and experience level, covering 50 US metros and 20 industries.
Free BaZi
Web
Free BaZi
Free BaZi is a transparent browser-based BaZi chart and Huangli tool for cultural reference and self-reflection. It explains Day Master, Five Elements, Ten Gods, luck pillars, and selected auspicious-day context without promising guaranteed predictions.
Generator Budget
Web
Generator Budget
Generator Budget helps U.S. homeowners plan standby-generator projects with itemized low, typical, and high installed-cost estimates. Its free tools also cover sizing, transfer-switch installation, maintenance, running costs, financing, and placement planning. Assumptions and source-backed boundaries are explained so users can compare scenarios before gathering contractor quotes. Results are planning aids, not contractor quotes, electrical designs, or code-compliance decisions.
Calculator Campus
Web
Calculator Campus
Calculator Campus is a free collection of practical browser-based calculators. Each tool pairs a focused input flow with formulas, assumptions, worked examples, FAQs, and named sources. Core calculators work without an account.
CalcXpert
iOS
CalcXpert - Tape Calculator
CalcXpert is a powerful tape calculator designed for professionals and everyday users. It keeps a full calculation history on a virtual tape, allowing you to review, edit, and share your results easily. The app combines the simplicity of a basic calculator with the precision and convenience of an accounting tool. Perfect for finance, construction, shopping, or any task requiring transparent and editable calculations.
ConvertX
iOS
ConvertX - All Unit Converter
ConvertX – The Last Unit Converter You'll Ever Need.Whether you're a student solving physics problems, an engineer on a job site, a traveler checking exchange rates, or a home cook scaling a recipe — ConvertX has you covered. Fast, accurate, and fully offline.📐 30+ Categories. 100+ Units. Convert anything in seconds: — Length: km, miles, inches, feet, yards, nautical miles and more — Weight & Mass: kg, lbs, ounces, stones, grams, tons — Temperature: Celsius, Fahrenheit, Kelvin — Area: m², km², acres, hectares, square feet — Volume: liters, gallons, cups, fl. oz, ml, pints — Speed: km/h, mph, knots, Mach, m/s — Time, Energy, Power, Pressure, Angle, Frequency — Digital Storage: bytes, KB, MB, GB, TB — Electricity: voltage, current, resistance — Astronomy, Atomic length, Quantum energy and more💱 Live Currency Converter Convert between 150+ world currencies with real-time exchange rates. Cached rates keep working offline — perfect for travel, shopping, and forex checks.⚡ Built for Speed — Results update instantly as you type — Swap source and target units with one tap — See all units at once with multi-output mode — Copy any result to clipboard in one tap⭐ Clean & Focused — No clutter. No unnecessary popups. — Light & dark mode — Favorites for your most-used conversions — Full conversion history — Works 100% offline for all unit conversions👩🔬 Who Uses ConvertX? — Students: metric to imperial, unit conversion calculator for physics, chemistry and math — Engineers: precise measurement converter with professional accuracy — Travelers: currency exchange rates, km to miles, temperature converter — Cooks: grams to ounces, cups to ml, cooking measurement converter — Developers: binary, hex, data storage converterDownload ConvertX — the fastest, cleanest unit and currency converter app. Free. Offline. No sign-up required.
Toolio
iOS
Toolio - 190+ free browser tools with no upload and no signup
Toolio bundles 190+ free everyday tools into one fast, private site: PDF signing, merging and conversion; image background removal, HEIC and format conversion; video-to-GIF and audio trimming; calculators; developer utilities; and fun generators. Most tools run entirely in your browser, so your files are never uploaded to a server - the few that do need a server are clearly labeled, and files are deleted right after processing. No account, no watermarks, no limits, free, and localized into 16 languages. Built by Pong Studio, an independent game studio in Vietnam. (Note: unrelated to "Toolio.ai".)