Tools & categories

Pick a category to see every live calculator. More categories will appear here as we ship them.

• Finance

  Interest, loans, mortgages, and money growth calculators.

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• Personal finance

  Rent vs buy, take-home pay, and big personal-money decisions.

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• E-commerce

  ROAS, margins, fees, and marketplace economics.

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• Freelance & agency

  Hourly rates, quotes, and consulting economics.

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• SaaS & B2B

  MRR, churn, LTV, and founder finance models.

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• Marketing & ads

  Sample size, ad break-even, conversion lift, and email ROI.

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• SEO

  JSON-LD schema markup and structured data generators.

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• Web dev

  CSS generators and front-end layout helpers with live preview.

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• Data

  SQL ER diagrams and browser-side data utilities.

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• DevTools

  Private formatter and debugging helpers for daily backend work.

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• Creator

  TikTok, YouTube, and platform monetization comparisons in the browser.

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• Logistics

  Commodity storage, freight, and supply-chain economics calculators.

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• Manufacturing

  Concrete, sizing, and construction job-site calculators.

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• Legal & employment

  Severance and contract estimates (not legal advice).

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• HR & compensation

  Job offer and total compensation comparison calculators.

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• Health & fitness

  Macro and nutrition calculators with private browser-side math.

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• Real estate

  Short-term rental profit, cap rate, and property investment math.

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• Privacy & security

  Password strength and security helpers with no server uploads.

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• Travel

  Currency conversion and trip money tools with live rates where needed.

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• Productivity

  Meeting scheduling and shared-hours planning across time zones.

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• Education

  Final exam and GPA planning calculators for students.

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• Pets

  Pet age calculators and care tools for dogs, cats, birds, reptiles, and more.

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• Hobbies

  3D printing and maker project cost calculators.

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• Social media

  Pinterest pins and creator assets generated in the browser.

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