200+ free calculators · no account required

Every calculator you need, one click away.

From compound interest and export costing to crop yields and drop rates — pick a tool, type your figures, and get an answer instantly in your browser. Nothing uploaded, nothing stored.

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200+ calculators8 categories0 sign-ups100% in-browser

SaaS pricing tier — Growth plan

Open tool

Monthly price per user$49

Paying customers350

Op. cost per customer$11 / mo

Monthly churn4%

Monthly recurring revenue

$17,150

ARR $205,800 · LTV:CAC 4.0:1 · CAC payback 6.3 mo

Gross margin 77.6%

Op. cost 22.4%

Browse by category

Eight collections, one library

Every calculator is filed under a category, so you can go straight to the numbers that matter to you.

01Finance & MoneyInterest, savings, loans, portfolio and business finance maths you can check line by line.60+ tools 02Business & TradePricing, margins, freight, duty, staffing and export costing for small operators.60+ tools 03Lifestyle & HomeKitchen conversions, events, pets, plants and the small maths of everyday life.50+ tools 04GamingDrop rates, upgrade costs, cooldowns and progression maths for the games you play.20+ tools 05EnvironmentCarbon, energy output, water and sustainability estimates for real projects.18+ tools 06AgricultureFeed, yield, stocking density, gestation and farm profitability per acre.17+ tools 07EducationGrades, statistics, study planning and score conversions for students.13+ tools 08AutomotiveRunning costs, leasing, wear estimates and vehicle specifications.8+ tools

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Compound Interest (Monthly)Finance APY CalculatorFinance Savings GoalFinance Portfolio RebalancingFinance Personal Loan EMIFinance Time Value of MoneyFinance Payback PeriodFinance Student Loan RefinanceFinance Retail PriceBusiness & Trade Variable MarginBusiness & Trade Tariff & DutyBusiness & Trade Storage CostBusiness & Trade SaaS Pricing TierBusiness & Trade Staffing NeedsBusiness & Trade Platform Listing FeeBusiness & Trade Straight-Line DepreciationBusiness & Trade Livestock Feed CostAgriculture Farm Profit Per AcreAgriculture Gestation Calculator (Pigs)Agriculture Fish Pond Stocking DensityAgriculture Percentage CalculatorEducation Standard DeviationEducation Z-Score CalculatorEducation IELTS Band ScoreEducation Solar Energy OutputEnvironment Grid Carbon IntensityEnvironment Dungeon Key CostGaming Castle Level Upgrade CostGaming Rarity Tier Drop RateGaming Car Ownership Total CostAutomotive Auto Lease PaymentAutomotive Shopping DiscountLifestyle Venue CapacityLifestyle Wedding CountdownLifestyle

How it works

Three steps, start to answer

No account, no download and no form to fill in before you get to the number you came for.

Pick a tool

Browse the popular list, jump into a category, or search the full library of 200+ calculators.

Enter your numbers

Fill in plain fields and watch the result update as you type. No submit button and no page reload.

Use the answer

Copy it, compare it, or come back later. The calculation runs on your device from start to finish.

Why LaunchHub

Built to be opened once and used twice

A deliberately plain tool directory: fast pages, transparent formulas and no reason to ask for your email.

No sign-up, ever

Open a calculator and start working. No email, no trial period and no paywall in the way.

Private by default

Your inputs are processed in the browser. They are not uploaded to or stored on our servers.

Formula first

Each tool page sets out the method behind the result so you can verify the arithmetic yourself.

Always growing

The library keeps expanding, with new calculators added from suggestions sent in by users.

FAQ

Questions, answered

Yes. Every calculator in the library is free, with no account, no trial period and no paywalled tiers. You can use any tool as often as you like.

No. Each calculator is a web page that runs in your browser on desktop, tablet and mobile. There is nothing to download or install.

No. The maths happens on your own device. What you type into a calculator is not uploaded to us, logged or kept after you leave the page.

Each tool page documents the formula and assumptions behind its result so you can check the maths. Outputs are estimates intended for everyday planning — for decisions with legal, tax or financial consequences, confirm them with a qualified professional.

Yes, and plenty of the current library started that way. Send a note through our contact page describing what you need and it will be considered for the next batch.

Every tool is responsive and built to be usable on a small screen, so the same page works on a phone, a tablet and a desktop browser.

Formulas, defaults and reference rates are reviewed on a rolling basis. When a rule or a published rate changes, the affected calculators are updated and their explanation text is revised to match.

The site is independently built and maintained. You can read more on our about page, and our disclaimer explains how results from the calculators should and should not be used.

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200+ tools · 8 categories · no account needed

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Disclaimer: Every calculator on LaunchHub is provided for general informational and educational purposes only. Results are estimates based on the figures you enter and the method shown on each tool page, and they do not constitute financial, tax, legal, accounting or other professional advice. Always consult a qualified professional before acting on a result. See our full disclaimer for details.