Calculators

Generate the first N numbers of the Fibonacci sequence. Free, in your browser, no sign-up.

Min, Q1, median, Q3, max and a box plot. Free, instant, in your browser.

Calculate the maturity value and interest on a fixed deposit, with quarterly, monthly, half-yearly or yearly compounding. Free, in your browser, no sign-up.

Calculate the margin required to open a forex position from the lot size, exchange rate and leverage, with the notional value and pip value. Free, in your browser, no sign-up.

Add, subtract, multiply or divide fractions with steps. Free, in your browser, nothing is uploaded.

Convert a fraction or mixed number to a decimal and a percent.

Convert a fraction or mixed number to a percentage.

Estimate the fuel needed and total cost for a trip. Free, in your browser, no sign-up.

See how much you save on fuel each year by switching to a car with better MPG, from your yearly miles and the fuel price. Free, in your browser, no sign-up.

Calculate the future value of equal regular payments, for an ordinary annuity or an annuity due, with the interest earned. Free, in your browser, no sign-up.

MPG and L/100 km from a fill-up. Free, instant, in your browser.

Greatest common factor of 2 to 4 numbers. Free, instant, in your browser.

Gear ratio, output speed and torque. Free, instant, in your browser.

Geometric, arithmetic and harmonic means. Free, instant, in your browser.

Score the Glasgow Coma Scale from the best eye, verbal and motor responses, with the E-V-M notation and the mild, moderate or severe brain injury band. Free, in your browser, no sign-up.

Turn points earned out of the total into a percentage and letter grade. Free, in your browser, no sign-up.

Plot functions, find intercepts, zoom and trace. Free, in your browser.

Gravel in cubic yards, tons and bags. Free, instant, in your browser.

Calculate gross profit and gross profit margin from revenue and cost of goods sold, with the matching markup on cost. Free, in your browser, no sign-up.

Add GST to an amount and see the GST and total. Free, in your browser, no sign-up.

Feels-like temperature from heat and humidity. Free, instant, in your browser.

Predict a child's adult height from the parents' heights with the mid-parental method, in centimeters and feet, with the likely range. Free, in your browser, no sign-up.

Hexadecimal arithmetic and bitwise operations. Free, in your browser.

UK statutory annual leave in days or hours. Free, instant, in your browser.