Free Online Calculators

Plan your household budgets, income taxes, and salary expectations accurately. Calculate monthly housing payments, principal breakdowns, and interest schedules using our mortgage calculator (Mortgage Calculator), or split bills quickly with our tip calculator (Tip Calculator). To estimate your take-home pay by state, use our paycheck calculator (Paycheck Calculator) or dedicated state modules for California, Texas, New York, Florida, Pennsylvania, Illinois, Ohio, Georgia, North Carolina, and Michigan. For international tax and business billing, evaluate tax liabilities using our income tax calculator India (Income Tax Calculator India FY 2026-27), compute commercial goods rates with our GST calculator (GST Calculator), calculate international tax with VAT Calculator, or draft clean client billing documents with our Invoice Generator.

During academic evaluation and competitive exam application seasons, students and job candidates require fast, error-free scoring metrics. Compute cumulative semester grade point averages with our GPA calculator (GPA Calculator) or translate university marks using our CGPA to percentage converter (Percentage to CGPA Converter). For general proportions, launch the percentage calculator feature. If you are preparing government and competitive recruitment forms, check UPSC, SSC, IBPS, and bank recruitment cutoff dates using our exam age limit calculator (Exam Age Limit Calculator).

For advanced mathematical, engineering, and scientific problems, you no longer need physical hardware calculators. Our scientific calculator online (Scientific Calculator) delivers full Casio fx-991 class capabilities directly in your browser window. Perform trigonometric functions, logarithmic calculations, complex numbers, vector cross products, matrix operations, statistical regressions, and algebraic polynomial equation solving without downloading native apps.

Unlike standard web rulers that assume a generic, inaccurate 96-DPI display, ToolJiffy features an online ruler actual size tool (Online Ruler). It offers 4 precise screen calibration methods — including credit card dimensions, bank card width, paper sizes, and manual PPI adjustment. Measure physical objects against your monitor or smartphone screen in exact centimeters, millimeters, and fractional inches with true 1:1 physical scale precision.