
Free Financial Calculators 2026 - Mortgage, Tax, Retirement, Debt
Calculate mortgages, taxes, retirement, and more using 470+ free financial calculators.
@AfridiMunir · X
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Calculate mortgages, taxes, retirement, and more using 470+ free financial calculators.
@AfridiMunir · X

Calculate how much meetings and work projects actually cost your company per day.
@mafaldateles_ · X
My first web app is out! I built a tiny tool to help answer a simple question: could that meeting have been an email? You decide.

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 your Mayan calendar date, Dreamspell kin, and 13 Moon position.
@huangzekai003 · X
Codex helped me turn an idea into a real product as a solo developer. I used it to research, design, test, and launch a Mayan calendar website with accurate calculations and AI reports. Built with Codex. Shipped by one person. #Codex

Use 32+ free business calculators for profit margin, break-even, and tax analysis.
@BizCalcLab · X

Pick two cryptocurrencies to see what price Coin A would have at Coin B's market cap.
@BananaFlipX · X
Our crypto market cap calculator. Check it out 👇🏼

Free calculators for analyzing startup and marketing metrics.
@NAVNEET_CODES · X
Free AI, startup, and marketing calculators built for founders, marketers, students, and business professionals.

Calculate how a raise affects your income after benefits cliffs.
@getpapi_ai · X
placed 3rd in the r/vibecoding vibejam 2026. It made me go viral in r/ohio It was my first ever jam entry, I'm also not a developer...or from Ohio. was planned, reviewed, shipped and currently managed by

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

Free collection of 48 online calculators for finance, health, math, and everyday needs.
@avinashraj61815 · X
i vibe coded this week

All-in-one platform for calculating EMIs, taxes, mutual funds, stock trading, rent vs buy, and retirement planning.
@sarkar68154 · X
Just launched FinoSphere Pro and the feedback on Product Hunt is 🔥 [ Free all-in-one finance calculator 👇 #buildinpublic #finance