CalcTrail | Free Professional Calculators & Semantic Search Library
CalcTrail is a free online calculator platform with a comprehensive collection of specialized calculators including financial calculators (loan, mortgage, investment, retirement, savings, 401k, Roth IRA, car loan, break-even, markup margin), health calculators (BMI, body fat, calorie, TDEE, macro, water intake, pace), academic calculators (GPA, grade, weighted mean), AI calculators (LLM token cost, AI ROI, token converter, image generation cost, speech cost), engineering calculators (Ohm's Law, power, wire gauge, resistor color code, stress and strain, beam deflection, concrete volume, pipe flow, LC circuit), scientific calculator, unit converters, date and time calculators, and more.
Features include workspace management, calculation history, custom variables, save data when signed in, multi-tab interface, dark mode, and performance-optimized charts. Export support includes JSON for guest current-session contexts and JSON/CSV/PDF on supported signed-in workflows.
All calculators are free to use with no sign-up required. Create an account to save your work, sync across devices, and access higher limits. CalcTrail works on desktop, tablet, and mobile devices with responsive design. All calculations are performed client-side for privacy and speed.
Calculator Categories
- Financial & Business: Loan calculator, mortgage calculator, investment calculator, retirement calculator, savings calculator, car loan calculator, break-even calculator, markup margin calculator, DTI calculator, credit card payoff calculator, APY calculator, payback period calculator, CD calculator, 401k calculator, Roth IRA calculator, present value calculator
- Health & Fitness: BMI calculator, body fat calculator, calorie calculator, TDEE calculator, macro calculator, water intake calculator, pace calculator
- Academic: GPA calculator, grade calculator, weighted mean calculator
- AI & Machine Learning: LLM token cost calculator, AI ROI calculator, token converter, image generation cost calculator, speech cost calculator
- Engineering: Ohm's Law calculator, power calculator, wire gauge calculator, resistor color code calculator, stress and strain calculator, beam deflection calculator, concrete volume calculator, pipe flow calculator, LC circuit calculator
- Math & Conversions: Basic calculator, RPN calculator, scientific calculator, percentage calculator, unit converter, fraction calculator, ratio calculator
- Date & Time: Age calculator, date difference calculator, time zone converter, time calculator
- Design & Creative: Aspect ratio calculator, color converter
- Marketing: ROI calculator, ROAS calculator, CPM calculator, CPC calculator, CLV calculator
- Tax & Shopping: Tip calculator, discount calculator, sales tax calculator, VAT calculator, fuel cost calculator, unit price comparison calculator