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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
Use 32+ free business calculators for profit margin, break-even, and tax analysis.
@BizCalcLab · X
Simulate your retirement with Monte Carlo analysis to see your probability of reaching your goals.
u/Negative-Ticket-9716 · Reddit
I open-sourced a free retirement planner with real Monte Carlo simulation (React + Supabase + edge functions) I built a free retirement planning tool that runs the analysis financial advisors charge $2,000+ for: a 10,000-trial Monte Carlo simulation over your savings, allocation, and withdrawal plan — probability of success instead of a single-point guess. It also models Social Security claiming ages, Roth conversions, and has a stress test that replays 2008, 1970s stagflation, and the Lost D
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.
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, 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
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
Publish plans from your terminal using Claude Code workflows and AI.
@discorev · X
I've been working on - Using gpt-5.6-sol and Fable in Claude Code via CLIProxyAPI. I've found using these two together with Claude Code Workflows is a killer combination
AI calendar that automatically schedules your week based on your priorities.
@Ijon_k4 · X
cursor for calendars
Access 26 online tools for documents, photos, invoices, calculators, and personal administration.
@latent_node · X
Transform goals into actionable steps and manage priorities with an AI planning assistant.
AI Todo — 像很多程序员一样，我日常要兼顾工作任务、生活琐事、项目计划，时常感到事情多但漏掉的也不少。想用智能方式管理这些待办，但市面上的工具要么设计臃肿，要么 AI 能力很弱。于是我花了几周开发了 AI Todo，目标是: