All Utilities
Find the right tool for the task in front of you.
Showing 1-12 of 62
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Open A/B Test Significance CalculatorA/B Test Significance Calculator Marketing
Compare two A/B test variants with conversion rates, lift, p-value, confidence, winner guidance, and distribution charts.
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Open Age CalculatorAge Calculator Health
Calculate current age, age on a specific date, target-age dates, birthday countdowns, and age differences from a birth date.
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Open AI Crawler Policy BuilderAI Crawler Policy Builder Marketing
Build robots.txt Disallow rules for AI training crawlers, AI search crawlers, and user-triggered fetchers.
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Open Auto Loan CalculatorAuto Loan Calculator Finance
Estimate a car loan payment with vehicle price, down payment, trade-in value, sales tax, fees, APR, and term.
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Open Base64 Decode and EncodeBase64 Decode and Encode Developer
Decode Base64 into text and encode text back to Base64 instantly in your browser.
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Open BMI CalculatorBMI Calculator Health
Calculate BMI with standard or metric measurements, adult category ranges, and age- and sex-aware guidance.
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Open Bread CalculatorBread Calculator Food
Scale bread recipes with baker's percentages, ingredient weights, dough weight, and hydration.
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Open Break-Even CalculatorBreak-Even Calculator Business
Calculate break-even units, break-even revenue, contribution margin, target profit sales, and margin of safety.
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Open Car Lease vs Buy CalculatorCar Lease vs Buy Calculator Finance
Compare leasing and buying a car with payments, fees, taxes, mileage costs, resale value, and remaining loan balance.
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Open Case ConverterCase Converter Text
Convert text between uppercase, lowercase, title case, sentence case, camelCase, PascalCase, snake_case, kebab-case, and more.
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Open Catan Board GeneratorCatan Board Generator Games
Generate Catan-style board setups with classic or 5-6 player layouts, number-token rules, resource clustering controls, and ports.
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Open Color Contrast CheckerColor Contrast Checker Design
Check foreground and background colors against WCAG contrast ratios for normal and large text.