Work out percentages, increases and decreases.
Calculators tools
Percentage, finance, date, health and everyday maths.
Percentage, finance, date, health and everyday maths. 16 tools are live in this category, 16 of which run entirely in your browser — nothing is uploaded for those. Percentage Calculator, Loan Calculator and Compound Interest are among the ones people reach for most. None of them need an account or a sign-up to use.
Estimate repayments, interest and total cost.
Project growth with regular contributions.
Add or remove tax from a price.
Split a bill and calculate the tip per person.
Count days, weeks or months between two dates.
Add or remove a duration from a date.
Calculate exact age from a date of birth.
Calculate body mass index in metric or imperial.
Solve for width or height at a fixed ratio.
Pick numbers in a range, with or without repeats.
Compute mean, median, mode and range.
Add, subtract and simplify fractions.
Add times and calculate elapsed duration.
Estimate the cost of a trip by distance and economy.
Convert and total bytes, KB, MB, GB and TB.