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calculate.at — 305+ Calculators, No Signup Required
Every calculator you'll ever need for money, health, math, and everyday conversions — worked examples included, nothing to sign up for.
@calculate_at · X
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Every calculator you'll ever need for money, health, math, and everyday conversions — worked examples included, nothing to sign up for.
@calculate_at · X
Free collection of 48 online calculators for finance, health, math, and everyday needs.
@avinashraj61815 · X
i vibe coded this week
Use 32+ free business calculators for profit margin, break-even, and tax analysis.
@BizCalcLab · X
Check destination safety with AI and get personalized travel itineraries instantly.
@TheFallen_jay · X
built this no signup,no pay in 1 hour
Free calculators for DIY home projects like woodworking, decks, concrete, and drywall.
u/CaboWabo55 · Reddit
Built a DIY calculator site in a weekend — betting on "boring tools" over content After my last project (an AI debate platform) got rejected by AdSense for "low value content," I went the opposite direction: no content treadmill, no AI features, no backend. Just genuinely useful calculators. studandslab.com — 10 free calculators for woodworking and home projects (board feet, stair stringers, concrete, drywall). Everything runs client-side, so hosting is free and every visitor costs me $0.
Scans live web apps for security vulnerabilities like exposed keys and open databases in 60 seconds.
@guhanvenkaty · X
Tako's free preview is live: Paste your URL, get a security verdict on your vibe-coded app in 60s. Not an AI wrapper: it fires real requests and PROVES exposure, pulling data from your open DB with no login. Scanning puts you on the early-access waitlist.
Manage oil & gas safety audits, JSA analyses, and hot work permits with offline-capable software.
@jay_cobski · X
Awesome oil and gas safety audit tool -
Calculator to estimate crypto airdrop token values based on market cap and distribution parameters.
@baofuzailushang · X
有位大兄弟制作了一个计算variational积分价值的网站，使用起来很方便： 我以市值1.5B，总积分9.3M，空投25%来计算，每分的价值是40u，1000分就是40000u 我认为这是保守估计，如果8月份variational上线了swaps和api，数据会更好看，而且以var的格局来看，空投应该不止25%,可能30%以上！
Estimate monthly payments for mortgages, auto loans, and personal loans with free calculators—no signup required.
@itskdubs_ · X
Calculate mortgages, taxes, retirement, and more using 470+ free financial calculators.
@AfridiMunir · X
Free, fast online calculators, converters and practical daily tools. No signup required and your saved data stays in your browser.
@SudJourney · X
Hey Nikhil, I am building everyday tools website
Calculate van life costs by state with breakdowns for gas, insurance, camping, and maintenance.
guangyu_wang1 · Product Hunt
Vanyage Van life cost calculator & AI trip planner