Free Online Calculators

Percentages, fractions, ratios and everyday arithmetic.

Linear and quadratic equations, sequences and solvers.

Area, perimeter, volume, triangles and circles.

Trigonometry, logarithms and scientific notation.

Mean, median, standard deviation and probability.

Length, weight, temperature, speed, volume and more.

Age, date differences, countdowns and business days.

Binary, hex, IP address and hashing tools.

Simple & compound interest, ROI, CAGR and more.

EMI, amortization and loan comparisons.

Mortgage payments, affordability, LTV and DTI.

Fuel cost, EV range and car loan calculators.

Concrete, cement, tile and material estimators.

Ohm's law, power, voltage drop and battery sizing.

Solar sizing, payback period and energy savings.

Profit margin, break-even, ROAS and CAC.

Selling price, fees, discounts and shipping cost.

Take-home pay, overtime, bonus and comparisons.

GPA, grade weighting and attendance.

Recipe scaling, conversions, cost and tips.

Trip cost, budget, distance and currency.

BMI, calories, BMR/TDEE informational estimates.

Insurance claim amount and settlement estimates.

Illustrative damages and compensation estimates.

Tip splitting, discounts and quick utilities.

Pet age, weight and calorie estimators.

Running pace, race time and sports stats.

Carbon footprint and energy-saving estimates.

Merge, split, compress, rotate and convert PDFs.

Compress, resize, crop, rotate and convert images.

Extract text from images and scanned PDFs into editable text or CSV.

Process many images or PDFs at once, download results as one ZIP.

Convert Word, Excel, HTML, Markdown and text to PDF.