
Free Online Calculators for Finance, Health & Math | RealCalculators
Free collection of 48 online calculators for finance, health, math, and everyday needs.
@avinashraj61815 · X
i vibe coded this week
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Free collection of 48 online calculators for finance, health, math, and everyday needs.
@avinashraj61815 · X
i vibe coded this week

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.

Calculate mortgages, taxes, retirement, and more using 470+ free financial calculators.
@AfridiMunir · X

Calculates concrete needed for slabs, footings, driveways, and small construction projects in cubic yards, bags, or cubic meters.
taylormichellebf · V2EX
做了一个免费的 Concrete Calculator,帮 DIY 用户估算混凝土用量 最近做了一个英文站:The Concrete Calculator 地址: https://the-concrete-calculator.com 它主要解决一个很具体的问题:用户在做 patio 、shed base 、walkway 、slab 这类小型混凝土项目时,不知道该 买多少混凝土、多少袋,或者该订多少 cubic yards 。 目前支持: - Concrete Slab Calculator - Concrete Pad Calculator - Concrete Yard Calculator - Concrete Bag Calculator - waste factor - cubic yards / cubic feet / cubic meters - 简单材料成本估算 做这个站的原因是我发现很多英文混凝土计算器要么广告太重,要么结果不够直观。这个版本尽量把核心计算和 单

Estimate monthly payments for mortgages, auto loans, and personal loans with free calculators—no signup required.
@itskdubs_ · X

Calculate how much you'll spend when your app stack exceeds free tier limits.
@K_dev001 · X
Vibe coding makes launching an app almost free. Running it is another story. I built to calculate your full AI + app stack costs and show which free tier breaks first. Sourced pricing. No signup. No guessing. ->

Allocate every dollar a purpose using envelope budgeting to track safe spending.
@purposebudgethq · X
Purpose Budget is affordable envelope budgeting for people who want to know what’s safe to spend without forcing real life into a rigid plan. Web, iPhone & Android—60 days free, no card required:

Access 26 online tools for documents, photos, invoices, calculators, and personal administration.
@latent_node · X

Free, fast, and privacy-first online utilities. Growing suite of browser-native calculators, converters, and web tools with zero server tracking.
@twistertools · X
Free, fast, and privacy-first web utilities & converters. Thank you!

Simulate SaaS pricing models, token costs, and profit margins across 30+ currencies.
@HelloCalcaas · X

Calculate bending marks and offsets for EMT electrical conduit in the field.

Calculate mortgages, loans, taxes, savings, and budgets online.
@darsh0891 · X
Meet CalcyFinance — the simple way to track your budgets, monitor spending, hand actually hit your savings goals without the headache. Stop guessing where your money goes. Try it out: 👍 #PersonalFinance #Budgeting #Fintech #buildinpublic