# Toolivaro

> Simple tools. Instant answers. — Free, private, browser-based calculators, converters, developer tools, and image tools. Fast answers with no account, no uploads, and no clutter.

## Tools
- [All tools](https://toolivaro.com/tools/)
- [Business Calculators](https://toolivaro.com/business/)
- [Math Calculators & Converters](https://toolivaro.com/math/)
- [Health Calculators](https://toolivaro.com/health/)
- [Home & Construction Estimators](https://toolivaro.com/home/)
- [Developer Tools](https://toolivaro.com/developer/)
- [Time & Date Tools](https://toolivaro.com/time/)
- [Image Tools](https://toolivaro.com/image/)

### Individual tools (44)
- [Age Calculator](https://toolivaro.com/time/age-calculator/)
- [AI Token Counter](https://toolivaro.com/developer/token-counter/)
- [Base64 Encoder & Decoder](https://toolivaro.com/developer/base64-encoder-decoder/)
- [Billable Hourly Rate Calculator](https://toolivaro.com/business/billable-hourly-rate-calculator/)
- [BMI Calculator](https://toolivaro.com/health/bmi-calculator/)
- [Break-Even Calculator](https://toolivaro.com/business/break-even-calculator/)
- [Business Days Calculator](https://toolivaro.com/time/business-days-calculator/)
- [Cash Runway Calculator](https://toolivaro.com/business/cash-runway-calculator/)
- [Compound Interest Calculator](https://toolivaro.com/business/compound-interest-calculator/)
- [Concrete Calculator](https://toolivaro.com/home/concrete-calculator/)
- [Cron Builder](https://toolivaro.com/developer/cron-builder/)
- [CSV to JSON Converter](https://toolivaro.com/developer/csv-to-json/)
- [Data Size Converter](https://toolivaro.com/developer/data-size-converter/)
- [Date Difference Calculator](https://toolivaro.com/time/date-difference-calculator/)
- [Discount Calculator](https://toolivaro.com/business/discount-calculator/)
- [Flooring Calculator](https://toolivaro.com/home/flooring-calculator/)
- [Gravel Calculator](https://toolivaro.com/home/gravel-calculator/)
- [Gross Profit Calculator](https://toolivaro.com/business/gross-profit-calculator/)
- [Hash Generator](https://toolivaro.com/developer/hash-generator/)
- [Hex to RGB Converter](https://toolivaro.com/developer/hex-to-rgb-converter/)
- [Image Compressor](https://toolivaro.com/image/image-compressor/)
- [Image Resizer](https://toolivaro.com/image/image-resizer/)
- [JPG, PNG & WebP Converter](https://toolivaro.com/image/image-converter/)
- [JSON Formatter & Validator](https://toolivaro.com/developer/json-formatter/)
- [JSON Minifier](https://toolivaro.com/developer/json-minifier/)
- [JSON to CSV Converter](https://toolivaro.com/developer/json-to-csv/)
- [JWT Decoder](https://toolivaro.com/developer/jwt-decoder/)
- [Loan Amortization Calculator](https://toolivaro.com/business/loan-amortization-calculator/)
- [Markup Calculator](https://toolivaro.com/business/markup-calculator/)
- [Meeting Overlap Planner](https://toolivaro.com/time/meeting-overlap-planner/)
- [Number Base Converter](https://toolivaro.com/developer/number-base-converter/)
- [Paint Calculator](https://toolivaro.com/home/paint-calculator/)
- [Password Generator](https://toolivaro.com/developer/password-generator/)
- [Payment-Processing Fee Calculator](https://toolivaro.com/business/payment-processing-fee-calculator/)
- [Percentage Calculator](https://toolivaro.com/math/percentage-calculator/)
- [Profit Margin Calculator](https://toolivaro.com/business/profit-margin-calculator/)
- [Regex Tester](https://toolivaro.com/developer/regex-tester/)
- [Text Diff Checker](https://toolivaro.com/developer/text-diff-checker/)
- [Tile Calculator](https://toolivaro.com/home/tile-calculator/)
- [Time Zone Converter](https://toolivaro.com/time/time-zone-converter/)
- [Unit Converter](https://toolivaro.com/math/unit-converter/)
- [Unix Timestamp Converter](https://toolivaro.com/developer/unix-timestamp-converter/)
- [URL Encoder / Decoder](https://toolivaro.com/developer/url-encoder-decoder/)
- [UUID Generator](https://toolivaro.com/developer/uuid-generator/)

## Blog
- [Blog index](https://toolivaro.com/blog/)
- [Base64 is encoding, not encryption: what that jumble actually is](https://toolivaro.com/blog/base64-is-encoding-not-encryption-guide/)
- [Break-even analysis for small businesses: units, revenue, and price](https://toolivaro.com/blog/break-even-analysis-guide/)
- [Compound interest explained: what n in A = P(1 + r/n)^nt actually changes](https://toolivaro.com/blog/compound-interest-explained-guide/)
- [Estimating materials: concrete, tile, and flooring without the mid-project store trip](https://toolivaro.com/blog/estimating-materials-concrete-tile-flooring-guide/)
- [JSON for non-developers: what the braces mean](https://toolivaro.com/blog/json-for-non-developers-guide/)
- [How loan amortization works: reading your payment schedule](https://toolivaro.com/blog/loan-amortization-explained-guide/)
- [Lossy vs lossless image compression: which one is shrinking your file](https://toolivaro.com/blog/lossy-vs-lossless-image-compression-guide/)
- [Choosing a password you can actually remember](https://toolivaro.com/blog/password-you-can-actually-remember-guide/)
- [Percentage change: the two-directions trap](https://toolivaro.com/blog/percentage-change-two-directions-trap/)
- [Reading a cron schedule: the five fields that run every server](https://toolivaro.com/blog/reading-a-cron-schedule-guide/)
- [Reading your BMI result honestly: what the number does and doesn't say](https://toolivaro.com/blog/reading-your-bmi-honestly-guide/)
- [Time zones and UTC: why “meet at 9” breaks, and the fix](https://toolivaro.com/blog/time-zones-utc-meet-at-9-guide/)
- [Wie viel Farbe brauche ich? Ein Raum-für-Raum-Leitfaden](https://toolivaro.com/blog/how-much-paint-do-i-need-guide-de/)
- [¿Cuánta pintura necesito? Guía habitación por habitación](https://toolivaro.com/blog/how-much-paint-do-i-need-guide-es/)
- [De quelle quantité de peinture ai-je besoin ? Guide pièce par pièce](https://toolivaro.com/blog/how-much-paint-do-i-need-guide-fr/)
- [ペンキはどのくらい必要？部屋ごとの計算ガイド](https://toolivaro.com/blog/how-much-paint-do-i-need-guide-ja/)
- [Quanta tinta eu preciso? Um guia cômodo por cômodo](https://toolivaro.com/blog/how-much-paint-do-i-need-guide-pt-br/)
- [How much paint do I need? A room-by-room guide](https://toolivaro.com/blog/how-much-paint-do-i-need-guide/)
- [Gewinnmarge oder Gewinnaufschlag: der Unterschied und wann welcher zählt](https://toolivaro.com/blog/margin-vs-markup-guide-de/)
- [Marge ou marge sur coût : la différence et quand utiliser laquelle](https://toolivaro.com/blog/margin-vs-markup-guide-fr/)
- [Margen frente a margen sobre el coste: la diferencia y cuándo usar cada uno](https://toolivaro.com/blog/margin-vs-markup-guide-es/)
- [粗利率とマークアップ率の違い：それぞれをいつ使うべきか](https://toolivaro.com/blog/margin-vs-markup-guide-ja/)
- [Margem vs. margem sobre o custo: a diferença e quando cada uma importa](https://toolivaro.com/blog/margin-vs-markup-guide-pt-br/)
- [Margin vs. markup: the difference and when each matters](https://toolivaro.com/blog/margin-vs-markup-guide/)

## Editorial
- [About](https://toolivaro.com/about/)
- [Methodology](https://toolivaro.com/methodology/)
- [Sources](https://toolivaro.com/sources/)
- [Editorial policy](https://toolivaro.com/editorial-policy/)
- [Changelog](https://toolivaro.com/changelog/)
- [Contact](https://toolivaro.com/contact/)