Calculators Tools

Find the simplest width-to-height ratio, recognize common ratios and resize keeping proportions.

Convert integers between bases 2 to 36 with simultaneous binary, octal, decimal and hex results.

Compute AND, OR, XOR, shifts and NOT on 32-bit integers with decimal, hex and binary views.

Calculate body mass index from metric or imperial input, with WHO categories and healthy range.

Project compound growth from an initial amount, rate, term, frequency and monthly deposits.

Convert between original price, discount rate and final price; add quantity and a spend-save coupon.

Convert between aperture, shutter and ISO at equal exposure, with a comparison table.

Compute sunrise, sunset, golden hour and blue hour times for any date and coordinates.

Estimate monthly payments and total interest for equal-installment and equal-principal loans.

Evaluate math expressions locally with functions, constants, powers and precise error positions.

Four percentage modes: percent of a number, what percent, change rate and increase or decrease.

Turn completed and total into a percentage, a progress bar and an estimated finish time.

Split a bill with tip: enter the amount, rate and number of people for exact per-person shares.